Plan for replacement after ls1 lets go
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Plan for replacement after ls1 lets go
Currently running stock bottom ls1 with ported heads, meth, and p1sc
Eventually I know it will let go.
I'm thinking of going with a Thompson forged ls3 shortblock and running my 241 heads. I could order dished Pistons to reduce compression.
Would like to skip having to buy new heads, intake and injectors if possible.
I believe all brackets including A&A procharger bracket should bolt up
Thoughts on this combo? And anything else I will need?
Eventually I know it will let go.
I'm thinking of going with a Thompson forged ls3 shortblock and running my 241 heads. I could order dished Pistons to reduce compression.
Would like to skip having to buy new heads, intake and injectors if possible.
I believe all brackets including A&A procharger bracket should bolt up
Thoughts on this combo? And anything else I will need?
Drifting
Joined: Oct 2006
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From: Minnesota
Have you made any plans if it does NOT let go? 
Seriously, these motors aren't as fragile as some would have you believe. Run lean, too much timing and you're looking at a paper weight...been there, done that, still going strong year after year!
Seriously, these motors aren't as fragile as some would have you believe. Run lean, too much timing and you're looking at a paper weight...been there, done that, still going strong year after year!
Last edited by reactor2; Dec 7, 2015 at 12:15 AM.
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From: cookeville tennessee
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14 lbs on stock bottom end if one little problem goes wrong you will be getting that new motor sooner than later. Just go with what you have at a save 8 lbs and just have fun in the car until you go with the new motor..Robert
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I think you would be seeing more than 14psi on a d1 with a 3.4 pulley... with a 4.125 I see 16psi on my d1 with headers, cam, od balancer, stock block/heads
Last edited by StingrayRebel; Dec 7, 2015 at 01:35 PM.
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Check this page out. The under drive pulley is where you are getting more boost. Plug your numbers in and see how close it is.
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that calculator is off, it's telling me I would be a little over 17psi with a 3.4 pulley... elevation will also have an effect and I'm aware that I'm gaining a bit of boost with the od balancer but maybe 2psi at most, so take that out of the equation and I'd be seeing around 14psi with a stock balancer... with the stock balancer and 4.38 I saw 12psi... if I ran a 3.4 on my setup I'd probably be around 22-23psi and that calculator is saying a little over 17... there are many variables that come into play though so once you have a baseline on your setup you can guesstimate where you will end up
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From: Boise
forged pistons and rods aren't really much better off against a poor tune
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