392 Stroker build
392 Stroker build Hello everyone, I have a 04 Gto I am building to have some fun spirited driving with on the street while also looking into doing some autocross events, and road racing as well, I have a k1 crank and rods, and I am waiting for my block to be finished machining at the machine shop currently, and was wondering would it be possible to make 500 hp and 500 tq with the ws6 store high lift ASA cam or is it to small for my build, it’s a 3.900 stroke crank, and 4.005 bore pistons making around 11.5 to 1 compression, with a set of advance induction 232 heads
You will probably need a bit more cam than that to hit 500whp not that I don't like the ws6store high lift ASA cam it's great. Given the specs of the cam it will make really strong DCR as it's on a 110 +3 I forget the IVC and a really flat torque curve with excellent bottom end. I used that cam in a customers ls3 based engine in a C10 and it rips it made around 475whp. I'd guess you would make something in the 450-470whp range and similar torque on a dynojet. You would want something in the upper 230/lower 240 degrees duration at 0.050" on the intake etc to be closer to the 500 range with a decent intake, but I'm not sure torque will quite get there. That is a pretty interesting combo though if you really wanted to push it further I'd get ls3 based heads and a larger cam for it to really party.
Last edited by slowride; Oct 30, 2023 at 05:59 PM.
Without knowing all the specs it will definitely get further towards the goal. My old 383 I built years ago made just over 500whp in a vette with a 238 342 114+0 and 11.8:1 compression. You have the advantage of 4" bore also.
I’m waiting for the block to be finished right now, but my intent with the build was to be stock stroke , but with everything now it will probably bored .020 over with a pretty high compression ratio it will be close to 11.5:1 with a fast 102, but I am having my car tuned by pcm of NC , and I saw they had their hellcat cam which is pretty similar to what cam motion had but just with more lift, my only problem is I have psi 1511 springs, and I know the max lift it can do .625 and I am not sure what the lift is on their cam, but I am leaning towards having them do a custom cam for me to hopefully utilize my setup better with the A.I heads I’m looking at
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A different cam spec'd for the set up would likely help in getting closer to 500 whp and be better.
Last edited by 99 Black Bird T/A; Nov 5, 2023 at 12:56 PM.
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Joined: Nov 2017
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From: S.F. East bay
But yet gm sells a crate motor that has 525hp….basically a LS3 with a standard ASA cam in it…….this is a bigger motor at ‘392’ as opposed to 376 also 11.5:1 compression almost 1 full point more than the GM crate motor….so why would he not make over 500hp…..does he need to go with the LS3 style rectangular port heads??, which might ultimately change his compression ratio as well, maybe 243/799’s ??…he has to be over 500hp…maybe even 550….torque on the other hand id imagine mid 400’s
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Joined: Nov 2017
Posts: 661
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From: S.F. East bay
232 heads are based off of what??….im not familar with ALL the diffrent castings….862,706,243,799,823,317’s are the ones im familar with….early LS1’s and LS7/LS9’s im still learning….i know the heads on my cts-v dont have numbers on the typical spot as well as the LSA heads i have brand new sitting in the boxes waiting to go on my 408 build…..they do have GM casted in between the rockers though…..also can anybody tell me if LSA heads are actually 12* or they the standard 15* just like most other factory LS heads??