Ls1 Vs Ls6 crate engine
Last edited by 02transamce; Sep 6, 2010 at 02:11 AM.
You can figure it like this. At 20% loss, you would need roughly 480 at the crank. I could see a well designed 224 to 228 cam probably breaking that, but you would be at the limit of that stall to help with drivability. We do have some cams avail that can help you with that though.
The LS6 is 3200.
That 402hp LS1 had a catback with no engine accessories and was most likely a happy dyno.
EDIT: just saw this is an old thread, anything bigger than a 220 range cam with over .560 lift should meet 400rwhp on a LS6. For an LS3 you would need to spend a lot on adaptors and 58xto24x conversion box. Should be about $800 plus the crate engine at $6200.
Last edited by camz28arro; Sep 6, 2010 at 02:40 PM.

Seriously .. I cannot imagine to spend $3300 for stock LS6 engine and then also start buying a cam, valvetrain, timing chain, oil pump ..... etc of mods ! .. and at the end I will gain less than X barns Heads/CAM LS1 power ! the difference is that you will spend a total of $4000
But if you got a used LS1 engine then through forged pistons/rods + good heads and you choice of cam .. you will have an engine that will love up to 200 shot of nitrous with the same or less price ! ..
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Seriously .. I cannot imagine to spend $3300 for stock LS6 engine and then also start buying a cam, valvetrain, timing chain, oil pump ..... etc of mods ! .. and at the end I will gain less than X barns Heads/CAM LS1 power ! the difference is that you will spend a total of $4000
But if you got a used LS1 engine then through forged pistons/rods + good heads and you choice of cam .. you will have an engine that will love up to 200 shot of nitrous with the same or less price ! ..
Why would you spend all that extra money for an oil pump, timing chain etc? The oil pump is a new ls6 unit, which is very good, an LS2 chain (still very good) plus lighweight valves.
We can cam this engine with springs and pushrods for $4k. Any cam.
The jury can go either way on this, but even though you say you are not trying to knock the engine as is, it sure seems like you are.
For example, let say someone with 2001 Camaro SS M6 with bolt-ons ls1 making 345 rwhp / 360 rwtq
Is it worth to swap to ls6 engine ? .. for only 25-30 rwhp ? ..
As a performance when you have aa badget to buy that new LS6 engine.. do a H/C LS1 and it will sure perfrom better than that new LS6 ! with half price ! ..
Put in mind that new LS6 engine is gonna come with stock 243's while if I did it in LS1 will buy a CNC ported heads, better valvejob, your choice of springs ! ..
Here is another example and please I want your answer .. If we have trickflow 215 and MS4 cam with all valvetain and we installed them in an LS1 and in LS6 .. what's the power difference in both engines on F-Body ?
LS6 is great engine as stock specially on that light C5 Z06 .. but when it comes to mods .. both LS1/LS6 will perform and dyno the same
Last edited by Stealth Camaro; Sep 7, 2010 at 11:18 AM.
If you are looking for an engine for the same price as a rotating assy, then its a moot point and if you are looking just for more power it is still a moot point to change out an entire engine like that. UNLESS you have demolished your ls1 engine or dont have one to start out with, or you can sell your ls1 and change to this and come out better on the exchange.
The other reason is if your ls1 is not usable anymore as in being rebuilt (out of spec) or just tired and worn out. The 01/02 f body cars did get the ls6 block in quite a few of them as well as the intakes. Then the only difference is the heads and camshaft.
Each way has its own pros and cons. But they each have their own reason and application.
If you are looking for an engine for the same price as a rotating assy, then its a moot point and if you are looking just for more power it is still a moot point to change out an entire engine like that. UNLESS you have demolished your ls1 engine or dont have one to start out with, or you can sell your ls1 and change to this and come out better on the exchange.
The other reason is if your ls1 is not usable anymore as in being rebuilt (out of spec) or just tired and worn out. The 01/02 f body cars did get the ls6 block in quite a few of them as well as the intakes. Then the only difference is the heads and camshaft.
Each way has its own pros and cons. But they each have their own reason and application.
Thanks,
Keith
w I notice Ls6 more cheap $$ than Ls1. I wish I have enough $$$ for ls6.Good thread






