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View Full Version : Lsx and heartbeat sc


the ron
02-10-2015, 06:51 AM
Hi guys from England and have an R8 ve club sport unfortunately my ls3 has died and I'm thinking about going lsx has this been done before with the heartbeat ? And also how much rwhp will my 6l80 take only has an up rated flex plate at the minute?
Wonky
02-10-2015, 08:13 PM
Can't give you much info on the Heartbeat but the earlier 6L80s in particular, which I assume yours is, have been known to die even behind stock motors. Certainly don't handle big hp without at least a tune which is spot on! Re putting LSX in a car which didn't come from the factory with it the motors themselves are available here for around $10 - $12k but end up doubling that by the time they've finished.

See for example http://www.ls1.com.au/forum/showthread.php?165140 where the car underwent an LSX transplant.
offshore
02-10-2015, 08:38 PM
If you have a decent mechanic probably just rebuild the LS3 with forged internals and 9.5 to 1 compression and stick the heartbeat on it. Probably easier
offshore
02-10-2015, 08:55 PM
Or you could ship one of these to the UK

http://www.lingenfelter.com/mm5/merchant.mvc?Screen=PROD&Store_Code=LPE&Product_Code=L110376509&Category_Code=C484#.Vg5in2vnzmZ
Smashfist
03-10-2015, 10:40 AM
Honestly I'd just go an LSA crate and use the leftover dollars to do something with the box. It will be "ok" with extra power if you're not hard on it and have a big trans cooler though.
the ron
03-10-2015, 08:54 PM
My tuner has reckon mended that I go lsa and sell my heartbeat. Get it cammed and should run around 700fwhp with headers and remap. He said the lsx would have heat issues trying to keep the iron block cool. Should have some money left over to sort the gear box. Any thoughts?
Smashfist
03-10-2015, 09:26 PM
My tuner has reckon mended that I go lsa and sell my heartbeat. Get it cammed and should run around 700fwhp with headers and remap. He said the lsx would have heat issues trying to keep the iron block cool. Should have some money left over to sort the gear box. Any thoughts?

Makes sense. The LSA is INCREDIBLY good value as a package.
Wonky
03-10-2015, 09:39 PM
Can't give you much info on the Heartbeat but the earlier 6L80s in particular, which I assume yours is, have been known to die even behind stock motors. Certainly don't handle big hp without at least a tune which is spot on! Re putting LSX in a car which didn't come from the factory with it the motors themselves are available here for around $10 - $12k but end up doubling that by the time they've finished.

See for example http://www.ls1.com.au/forum/showthread.php?165140 where the car underwent an LSX transplant.

God I'm a bloody idiot! Was somehow thinking LSA, not LSX. Therefore some of my comments are irrelevant............... :doh::doh::doh: