Another strong 383 From Sams

[bigjoe]

Just wanted to thank sam from Sams Performance for my very strong 383.

Made 556 fwhp and 494 FtLp. :) :) :). Considering that the prvoius engine had a lot larger cam the new engine made 2hp less hp than the old engine, and we still to fit the 8 throttle bodies. :dance:

[Craig]

Sounds good, can ya get the graph up??

What car is it going in, the maloo?

[LX346]

Sounds animal. Whats that a 236 cam?

[bigjoe]

I think the cam is 242 , since its my daily driver i did'nt go to big.

[LX346]

I think the cam is 242 , since its my daily driver i did'nt go to big.

I think we need to define a big and large cams.

[YIIR8]

I think the cam is 242 , since its my daily driver i did'nt go to big.


LX346 Quote: I think we need to define a big and large cams.

:lol: :lol: I'd hate to see his definition of huge then

[Criso]

Just wanted to thank sam from Sams Performance for my very strong 383.

Made 556 fwhp and 494 FtLp. :) :) :). Considering that the prvoius engine had a lot larger cam the new engine made 2hp less hp than the old engine, and we still to fit the 8 throttle bodies. :dance:Good one Joe, Sams the Man.......There is some strokers coming out of Sams lately,,And i herd more to come next week end.
Cheers Criso (Cheese Burger) :lol: :lol: :booty:

[bigjoe]

I define a large cam 260/260 +.

[bigjoe]

[QUOTE=bigjoe]Just wanted to thank sam from Sams Performance for my very strong 383.

Made 556 fwhp and 494 FtLp. :) :) :). Considering that the prvoius engine had a lot larger cam the new engine made 2hp less hp than the old engine, and we still to fit the 8 throttle bodies. :dance:


http://www.purefect.com.au/planb/sams/joes%20dyno%20run%20sheet.jpg

[Justice R8]

Well done xxxx

[Sid447]

Refering to the posted graph,

The engine that was run as Test Run #1962 shows better average torque and horsepower than #2252.
I'm sorry maybe I don't understand things here, was #1962 the same engine "before" with different mods ??

[seldo]

Refering to the posted graph,

The engine that was run as Test Run #1962 shows better average torque and horsepower than #2252.
I'm sorry maybe I don't understand things here, was #1962 the same engine "before" with different mods ??
I'm with you Steve. The "old" engine made 2 hp less at 250rpm lower peak, had 27ftlb more average torque over the same 2250 - 6000 rev range, and 26ftlb more max torque at only 300rpm higher peak 4850/5150. If it was me I'd be going back to the old cam i think...

[awddynotodd]

Refering to the posted graph,

The engine that was run as Test Run #1962 shows better average torque and horsepower than #2252.
I'm sorry maybe I don't understand things here, was #1962 the same engine "before" with different mods ??

Sid,

Look at the 2 Graphs, one is only a short pull, where the other is a longer pull. The graph with the short pull has the higher average as there is less data to average. The 2 graphs aren't a good comparison of Average Power/Torque as they don't have the same start/end speed.

[LX346]

The averages should still be measured from 2250-6000rpm like it says, even though the line only shows from 4500-6000rpm.

Also I think maybe Joe is going to run this engine in first, so the tune isn't on its max and he said he is going for the 8 throttle body setup, probably once engine is run-in. So I think the next graph Joe posts will be very different to this current one as far as average figures are.

But this graph is a good comparison showing how a much smaller cam with more cubes makes similar dyno lines.

I bet the 383 feels "stock" compared to the bigger cam 346 at idle?

Also looks like cam timing was setup for top end HP in the 346 vs the 383 looks like its pretty much straight up.

[Sid447]

Sid,

Look at the 2 Graphs, one is only a short pull, where the other is a longer pull. The graph with the short pull has the higher average as there is less data to average. The 2 graphs aren't a good comparison of Average Power/Torque as they don't have the same start/end speed.

Yes, agreed.

But maybe they have the numbers from 2250rpm in the computer(?)
Engine dyno pulls are normally done from around 2300rpm.

[bigjoe]

The averages should still be measured from 2250-6000rpm like it says, even though the line only shows from 4500-6000rpm.

Also I think maybe Joe is going to run this engine in first, so the tune isn't on its max and he said he is going for the 8 throttle body setup, probably once engine is run-in. So I think the next graph Joe posts will be very different to this current one as far as average figures are.

But this graph is a good comparison showing how a much smaller cam with more cubes makes similar dyno lines.

I bet the 383 feels "stock" compared to the bigger cam 346 at idle?

Also looks like cam timing was setup for top end HP in the 346 vs the 383 looks like its pretty much straight up.

Both Engines are 383ci, The diffrence is that the first engine (Old Date) had a lot bigger can 260+ @ 50 and 8 Throttle bodies and the new engine(newest Date) has 240+ @ 50 with no throttle bodies.

My point is that with some clever developement's from Sam :thumbsup: He has been able to produce nearly the same Hp as before without going to radical cam.

We will however fit the throttle bodie which will gives about 35 to 50FtLbl.

[BlownVR]

The average power figures are clearly calculated over the rpm range of the curves on the graph, rather than 2250-6000rpm stated. Look at how much power it is making at the beginning and end of the pull - the average is approx halfway between. If the average was calculated on data over the range 2250-6000rpm then that average figure would be much, much lower.

[LX346]

Ah thanks for clearing that up Joe, I must of just assumed the old one was a 346.
But with what you just said, this new engine and Sam's brains it looks like he has built a higher refined 383 for you that will top the old motor with a heaps smaller cam.

Thats crazy, enjoy the beast man, let us know how it goes with the 8 throttle bodies on it.

Can I ask how long ago was it you had the 260 cam in it?


Both Engines are 383ci, The diffrence is that the first engine (Old Date) had a lot bigger can 260+ @ 50 and 8 Throttle bodies and the new engine(newest Date) has 240+ @ 50 with no throttle bodies.

My point is that with some clever developement's from Sam :thumbsup: He has been able to produce nearly the same Hp as before without going to radical cam.

We will however fit the throttle bodie which will gives about 35 to 50FtLbl.

[bigjoe]

Ah thanks for clearing that up Joe, I must of just assumed the old one was a 346.
But with what you just said, this new engine and Sam's brains it looks like he has built a higher refined 383 for you that will top the old motor with a heaps smaller cam.

Thats crazy, enjoy the beast man, let us know how it goes with the 8 throttle bodies on it.

Can I ask how long ago was it you had the 260 cam in it?

About 4 months ago

[VX SS]

Joe

What manifold were you running on that as it was still making power past 6500 and on a stroker thats unusual with a LS6 manifold.

[Criso]

Nice numbers there Joe :cool:

[bigjoe]

Joe

What manifold were you running on that as it was still making power past 6500 and on a stroker thats unusual with a LS6 manifold.


90mm Fast Manifold

[VX SS]

Joe
Thats a good comparison then as the FAST on my 427 runs out of steam around 6200 which sort of gives you more of an idea that its better suited to say 383 or400ci.
Good info cant wait to see it with the 8tb back on.