383 stroker

[brenten88]

hey fellas, just trying to get an idea how much some of you guys have paid for a 383 stroker rebuilds into your ls1s installed and fitted in your car? not including tune?

I am looking at having this done to my car the entire top end is good with higgins heads and cam 236/242 cam and i have some big 4-1s and a fast 92mm manifold with fuel system so should be good with the stroker so i simply need a bottom end rebuild with 383 stroker setup........

if you guys dont want to discuss prices online feel free to PM me

[HOLDAN]

hey fellas, just trying to get an idea how much some of you guys have paid for a 383 stroker rebuilds into your ls1s installed and fitted in your car? not including tune?

I am looking at having this done to my car the entire top end is good with higgins heads and cam 236/242 cam and i have some big 4-1s and a fast 92mm manifold with fuel system so should be good with the stroker so i simply need a bottom end rebuild with 383 stroker setup........

if you guys dont want to discuss prices online feel free to PM me

Give Nick a ring from NJC Corp. He's a sponsor and I bought my 402 stroker parts from him. He is very good to deal with and will give you great value for money

[SirNemesis]

For the money spent on a 383ci stroker you may aswell just start with an L76/L98 base. The potential is there to make the same power and you'll probably save some money! I'm sure Nick would say something similar.

[brenten88]

thanks for you input guys I am waying up my options at the moment because it has recently become aparent that i have more than likely spun a bottom end bearing or something along those lines so a rebuild is on the cards then the though process lead to stroking it...... I have had a price to get a ls3 crate motor installed and tuned and bassicly i know the difference between that and a l98 for example is only really the crate motor price so now I am just getting prices for a 383 job and then i will weigh up realisticly its going to come down to what is the cheapest option 383, l98, ls3 once you go through the process of fitting and tuning all these options....

[brenten88]

common guys there must be more blokes out there that have done a 383 recently can can tel me a rough idea on price? im also interested in what people that have a 383 recon of them??

[peter b]

Hey mate
Im trying to reply to your pm your inbox is full.
The kit consists of
Manley 4 inch forged crank
Manley 6.125 forged H beam rods
Mahle motorsport forged pistons
Clevite big end and main bearings in H series
We are located in Lakemba in sydney however can send parts to anywhere in Australia.

[rhmfgenius]

Hey mate i was in a similar situation to you i already had top end done cam heads lifters pushrods rockers etc, I brought a come strocker kit for a round 4k i think and had them do the machining work and cam bearings another $500 or so. I built the engine myself so saved a fair bit of money, obviously add a gasket kit to that fitted a double row timing chain $150 or so. I love the strocker just over 300 rwkws and lots of tourque. Seeing you already have the top end parts shold work out cheaper than a conversion plus you already have a nice sounding cam:). There are a few companies that short motor exchanges for the 383.

[brenten88]

hey mate thanks for the info i really appreciate it..... I have just had my car looked over by a friend of a friend who is an engine builder he said it definitely is a bottom end bearing of some description so i got him to price me up a stroker build and i was very surprised on the price he gave me least to say he is taking care of me.... $4600 for a full stroker rebuilt bottom end assembled so i am very happy with that price and least to say im gettingg mates rate :) and its for all very good quality stuff mainly MANLEY gear he is an ex PAVTEC boy and knows his stuff so as much as its an expense i wasnt looking forward to it seems i might get out of it a little cheaper than what i thought its gonna be a little more than that As im going to upgrade the lifters and get the valve springs checked apart from that should be a good setup after everything is fitted up and then i get it tuned.....




Hey mate i was in a similar situation to you i already had top end done cam heads lifters pushrods rockers etc, I brought a come strocker kit for a round 4k i think and had them do the machining work and cam bearings another $500 or so. I built the engine myself so saved a fair bit of money, obviously add a gasket kit to that fitted a double row timing chain $150 or so. I love the strocker just over 300 rwkws and lots of tourque. Seeing you already have the top end parts shold work out cheaper than a conversion plus you already have a nice sounding cam:). There are a few companies that short motor exchanges for the 383.

[feistl]

Good to hear, thats a pretty decent price.

The dyno numbers wont be as high as a cammed L98, but thats only half the story. Usable torque and rev ranges etc are more important than just a number....


My 383 is only making 276rwkw, but has above 650nm from 2400rpm - 6000rpm Peaking at 715nm at around 5000rpm. Its very easy to get off the line, makes a great sound and goes hard. Thats with a baby cam and very old tune (eg 2005). A stroker should be good for around 300rwkw, but very easy to drive on the street, and for that price its a great option.

Let us know how the build goes...

Cheers

[brenten88]

Good to hear, thats a pretty decent price.

The dyno numbers wont be as high as a cammed L98, but thats only half the story. Usable torque and rev ranges etc are more important than just a number....


My 383 is only making 276rwkw, but has above 650nm from 2400rpm - 6000rpm Peaking at 715nm at around 5000rpm. Its very easy to get off the line, makes a great sound and goes hard. Thats with a baby cam and very old tune (eg 2005). A stroker should be good for around 300rwkw, but very easy to drive on the street, and for that price its a great option.

Let us know how the build goes...

Cheers

hey mate, just out of interest can you give me a few more details on you car for example what heads, cam, manifold, exhaust, cam specs would be good to know just to get an idea how its going to turn out.... i am hoping to get past 300rwkw it has already made 275.5rwkw on GM motorsport dyno and that was with a knackered auto that blew up 2 days later so i suspect something more lik 280rwkws


New mods will include, 383 stroker bottom end, better link bar lifters, possibly new valve springs, new high volume oil pump, FAST 92mm manifold, FAST fuel rails, 36pound injectors, 92mm NickWilliams t/b, new 1 7/8 long 4-1 HPC pacemakers with mandrel bent 3inch cat sections with ballistic 100cell cats.

current mods are, dual 3inch cat back, 1 5/8header(geting changed), stock cats, 84mm starr t/b(getting removed), VCM OTR, Higgins heads and cam package 241 castings with a 236/242 cam unknown LSA(around 112-114) unknown lift(around 590-640) unfortunately the owner couldn't tell me lift or LSA which im spewing on although im hoping with the engine build i will be able to get the specs that are engraved on the end of the cam and ask comp for the spec sheet.

it will be interesting to see what power and toque it makes but its behind and auto and a 4000dominator so im not shore how the dyno will show the figures

[DNO-55]

I would hazard a guess and say power will be around 320-330rwkw but loads of torque with your setup.

Given the bigger cubes, id throw a larger cam in. They love it.

Sounds good and keep us posted.

[HRT666]

Go with a bigger cam for sure, I used a 248/254 on 112lsa .615" lift in my 383 Im running it on E85 makes 863nm and 350rwks through a manual.

[Jag530G]

Go with a bigger cam for sure, I used a 248/254 on 112lsa .615" lift in my 383 Im running it on E85 makes 863nm and 350rwks through a manual.

What have you had to do to the fuel system of an LS1 for E85, ie stopping corrosion etc? I like the idea of E85 and the higher Octane allowing higher compression ratio.

Cheers, Matthew

[HRT666]

As far as corrosion I havent done anything, my fuel system is 5ltr surge tank one 044 pump FAST fuel rails and 60lb injectors. Im running 11.5 comp ratio.

[AllWheelSlide]

Great to hear your mate is going to look after you ......
(unfortunately here is the but part)
but just as a word of warning there is a reason for the old saying, don't mix business or money with friends or family.
In short because you are 'being looked after' you should expect to pay in a different way. eg. He will do it when it suits him!
Anyway I hope for you, that I am completely wrong.
Otherwise it will be 'ing A.

[brenten88]

thanks for the input fellas, would love to go a bigger cam but cant afford anything that isnt ****ed being fixed if that makes sense, yeh mates rates usually has its conditions but he can take aslong as he wants really it doesnt worry me aslong as its done right.... the other thing is im wondering if the 36pound injectors and fast fuel rails will be enough to fuel this motor wondering if pump needs to be upgraded and weather the 36pound injectors is enough.....

[rhmfgenius]

i got away with 42 pound injectors and standard fuel pump

[brenten88]

i got away with 42 pound injectors and standard fuel pump


well ive just had a look and the injectors i got from speedinc are about 40.7 lbs/per hour at 58PSI which is what ls1s fuel pressure is so i guess the injectors should be good they say will be good for 500rwhp applications which is 375rwkw so i dont think i wil be able to max them out and with the added volume of the fast fuel rails that should help with fuel supply

[ittwgn]

hi mate as you worked out injectors shouldn,t be a problem with 42pd green tops on old tt setup ran 360+ rwkw cheers

[VT 2 EXEC LS1]

pm sent,
cheers dave

[feistl]

hey mate, just out of interest can you give me a few more details on you car for example what heads, cam, manifold, exhaust, cam specs would be good to know just to get an idea how its going to turn out....

unfortunately, no. :(.

Long story short, the original owner of the car had the engine built at CSV in 2005. He sold it to his mate in 2007 who drove it for 2 years before selling to me. He wasnt very technical and didnt have the engine specs, and had fallen out with his mate so i couldnt really track it down.

When i spoke to peter as CSV though, he reckons the average 383 stroker build at that time would have been port/polished LS1 (241 casting) heads (done by a guy in Adelaide, i think this was before CNCing). It had forged internals, 4-2-1 Pacemaker heads with 2.5" Stainless steel exhaust, standard LS6 throttlebody/manifold... Thats about all i can tell you. We think it has double row timing chain and upgrading springs, but im really not sure. The cam was also a baby (something like 220/224 apparently?)....

Here is the dyno sheet though.

http://img9.imageshack.us/img9/7445/dynoerrolf24042010.jpg

As you can see, its making ~650nm from 2500rpm right up to the limiter at 6000rpm. As the power curve is so even, the car is a pleasure to drive.

In a few months the car will be going to Chevs for a much larger cam, new springs/roller rockers/pushrods/oil pump/exhaust/sump and either a Fast LSXR 102mm manifold + TB or a HVT2300.

Obviously the Supercharged combo will have more power but i dont want to lose the drivability, and a lumpy stroked V8 sounds awesome. So yeah, not sure which direction ill go yet....

The other thing Peter (from CSV) said was tuning techniques have come a long way in the last 5 years. Just with a retune i should be able to pickup ~15-20rwkw.

The thing is, dyno sheets dont do strokers justice. Torque wins races and a strokers have lots of it spread evenly over the rev range. So yeah, dont get too caught up with a dyno number, the real result can be judged on the 1/4 mile and the way it makes you feel when you plant your foot.

[brenten88]

thanks for the info buddy love the way its making toque on that dyno sheet

[HRT666]

Here's my dyno sheet so you can see what a bigger cam and some compression does.
http://i132.photobucket.com/albums/q13/HRT_666/003-2.jpg

[brenten88]

Thats awsome. i would be wrapped if i hit 350rwkw but i dont think that will be happening, it looks like that car was tuned for E85 aswell???? i would be happy with maybe 310rwkw plus with the bigger headers and cats the fast manifold and stroking also something i will be looking at is increasing lift with high ratio rockers from MACE engineering if its possible we will have to see

[HRT666]

Yeah I said earlier it was running E85 has FAST 102 t-body and manifold Duspeed otr to suit 102, 1 7/8 headers and full custom twin 3" exhaust, carbon tripple plate clutch etc.

[brenten88]

Yeah I said earlier it was running E85 has FAST 102 t-body and manifold Duspeed otr to suit 102, 1 7/8 headers and full custom twin 3" exhaust, carbon tripple plate clutch etc.

yeh thats good as mate, i wouldnt mind going E85 when it gets abit more popular at servos, and a bigger cam would be great in the future

[HRT666]

Bump your comp ratio up a bit while ya mate is building the new bottom end, mine still ran good on 98 with 11.5:1

[brenten88]

yeh good call, only problem is i dont know the specs of the heads on it now they may have been milled for more compression already but its really known as it was the previous owners work.

[edz]

Go with a bigger cam for sure, I used a 248/254 on 112lsa .615" lift in my 383 Im running it on E85 makes 863nm and 350rwks through a manual.

That's a bigger cam than I would have thought would have been good in a 383?

Not speaking from personal experience yet, but I'm in the process of collecting bits, I'd be interested in your feedback on how this drives in an everyday car? How is it at lowish revs when you come back on the throttle say idling along at 2000 rpm? Obviously you're driving a manual and I'm driving an Auto - but it has a 3000 rpm stall. I'm building the rest similar to yours. I was thinking a 234/238 cam? Just after kick ass grunt in the 3-5k range rather than a peaky motor that's a pig off cam?

[HRT666]

It can be a bit choppy in 4th at around 1800rpm, so I just try and pass that part of the rev range quickly apart from that its fine and makes more power the harder its reved (up to 6800) but pulls very well really from 2000 and up.
Steve.

[edz]

It can be a bit choppy in 4th at around 1800rpm, so I just try and pass that part of the rev range quickly apart from that its fine and makes more power the harder its reved (up to 6800) but pulls very well really from 2000 and up.
Steve.

I wondered about that? Anyone have an auto with a 3000rpm stall running a big cam like this - I wonder if the auto and stall would smooth it out?

I imagine fuel economy would go out the door to? Love to drive a stroker - anyone in south Canberra able to take me for a run before I lay my cash down?

[SS-355]

current mods are, dual 3inch cat back, 1 5/8header(geting changed), stock cats, 84mm starr t/b(getting removed), VCM OTR, Higgins heads and cam package 241 castings with a 236/242 cam unknown LSA(around 112-114) unknown lift(around 590-640) unfortunately the owner couldn't tell me lift or LSA which im spewing on

Hey Brenten,pretty sure the cam is on a 115 lsa and has around 600 lift.Sorry to hear about the car mate but good to see your going to up the ante.I think that once you get board of the power of the stroker :stick: that cam would suit a big single turbo perfectly :bravo:

[brenten88]

Hey Brenten,pretty sure the cam is on a 115 lsa and has around 600 lift.Sorry to hear about the car mate but good to see your going to up the ante.I think that once you get board of the power of the stroker :stick: that cam would suit a big single turbo perfectly :bravo:

hahaha cheers mate, well atleast i know the LSA and roughly what lift, once i get bored of the stroker i think i will probs up the cam and throw a :nos: kit on it lol

[brenten88]

Bit of an update, went around to my engine builder on saturday the block has been stripped down it was evedent that there has been a dodgy bottom end rebuild once before so that explains why it spun a bearing,
but now me and the mad scientist (James from Kanaris engines) have conceived a plan consisting of......
Block chemicly cleaned, decked, and honed, then 383 bottom end fitted. after that we have a upgraded oil pump and existing double row chain, existing cam may be getting a rework not shore yet, throwing in a set of racing hydraulic lifters link bar items, from there the higgins pocket port heads are getting a full job done on them including bigger valves, after that will be the FAST 92mm manifold with 92mm t/b also we are throwing on a set of pacemaker long 4-1 1 7/8 into 3.5 collector HPC headers, and ballistic cat sections, everything will be match ported and done right i am very happy with the plans and cant wait to have it all done.....

[ittwgn]

plans sound good mate !!!!!!cheers:xmas:

[Pepps]

Good stuff mate, looking forward to seeing the result.

[SS-355]

Now thats what im talking about Brenten,you have to take me for a drive when your done buddy, the clubby is going to be an animal.

Welcome to the rate mate!:rofl: and while your at it add a high 240s - low 250s duration cam with 600+ lift on a 110 lsa.With a 4000 stall and 3:9 gears you better budget for a cage to :jester: cheers Steve.

[brenten88]

Now thats what im talking about Brenten,you have to take me for a drive when your done buddy, the clubby is going to be an animal.

Welcome to the rate mate!:rofl: and while your at it add a high 240s - low 250s duration cam with 600+ lift on a 110 lsa.With a 4000 stall and 3:9 gears you better budget for a cage to :jester: cheers Steve.


yeh mate should be alot of fun once its all finished :D, getting the cam reground to those specs is on the cards me and jamie are going to have a look because we dont want to be revving it past 7100-200rpm anyway so the cam in it may do the job otherwise im leaving it up to my builder to spec the cam how he thinks but should be awsome, and yes after a couple of runs down the 1/4 a cage could very well be on the cards, i have plans to put it on the bottle once the stroker get boring and see how fast we can make it go :D:D

[Black_vtss]

Hey Brenten88,

How did the 383 build end up going?

Interested in what cam, rwkw and torque you ended up with. With the torque figures I've been reading about I'm sure its an animal on the street!

[Kingston_99]

My build so far (into week 5) hopefully its ready to pick up next Friday!

Callies Compstar 4" forged 4340 crank
Compstar H beam 4340 forged rods with ARP2000 bolts
Clevite H series bearings
3.905" SRP forged dish pistons 9.5:1 cr
Cometic mls head gaskets, ARP head bolts/end bearing, Melling HV oil pump, Crow double row roller chain set
VCM3 cam (228/238/112)!! lumpy :P
Comp Cams valvetrain upgrade as old set is farked
also being bolted with an HTV2300

I cant wait to pick it up.

[throttlehappy]

My build so far (into week 5) hopefully its ready to pick up next Friday!

Callies Compstar 4" forged 4340 crank
Compstar H beam 4340 forged rods with ARP2000 bolts
Clevite H series bearings
3.905" SRP forged dish pistons 9.5:1 cr
Cometic mls head gaskets, ARP head bolts/end bearing, Melling HV oil pump, Crow double row roller chain set
VCM3 cam (228/238/112)!! lumpy :P
Comp Cams valvetrain upgrade as old set is farked
also being bolted with an HTV2300

I cant wait to pick it up.

mmm very nice

jealous

[stockergts]

nice mine is just starting to come together too now but i went na so bit bigger cam and a set of afr heads

[Black_vtss]

On a 383, what sort of gains would you see from an ls6 manifold vs. a fast manifold? Are the fast manifolds really worth the $$?

[rosey]

On a 383, what sort of gains would you see from an ls6 manifold vs. a fast manifold? Are the fast manifolds really worth the $$?

Providing you are using a decent size cam there are some good gains to be had, I got in the order of 20rwkw when I had my FAST 90 setup fitted and tuned up. This was on a standard stroke, head and cam LS1. Should work even better on a stroker one would guess.