Dead end LS1? Build or Sell?
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not really what this is about to me. It's about sharing info, techniques and parts to further the development to exploit the performance of this platform. Some people just get offended when their **** gets out performed by relatively lesser builds.
nothing.......love them. Would like to revisit a build with one someday and make more asses raw.
I would look to turn a sbc into a ls......while utilizing oe components as much as possible......including heads. A 500whp oe headed sbc is entirely possible.
nothing.......love them. Would like to revisit a build with one someday and make more asses raw.
I would look to turn a sbc into a ls......while utilizing oe components as much as possible......including heads. A 500whp oe headed sbc is entirely possible.
start with a LT4. Good heads and already roller cam. Ported heads and intake, 500whp from a 350 shouldn’t be difficult, just need to spin it past 6500.
IIRC, ALL Chevy V-8s in passenger cars since 1987 have had factory roller cams/lifters. Not to say they're high perf roller cams, lol. The SBC LT4, IIRC again, came from GM with Crane Gold roller rockers. Probably the most powerful, and honest hp rating, of any SBC ever.....
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I guess some of this comes down to a person's definition of bolt-ons. For me, bolt-ons exclude porting stock heads, replacing cams, or replacing any internal engine components, except higher ratio rockers, and FI is not allowed. But altering stock cam timing, headers and exhaust mods, external intake mods, MAFs, U/D balancers, tunes, etc., are all fair game. My opinion, sure to be different than others.....
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I agree totally on higher ratio rockers. Just don't do this on a stock 2000 C5. That LS1 had the highest lift cam in any LS1. If you try 1.8s on a 2000 C5 without changing valvesprings, engine damage will happen, guaranteed.....
.....or just use lt4 heads i suppose. I like the weight advantage of aluminum heads.
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Last edited by grinder11; Feb 18, 2026 at 09:16 AM.
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they’re stock GM LS rocker arm with the cup for the push rod filled it weld and the re drilled further away from the fulcrum. So you can they’re stock rocker arms, they even appear stock.
I would take another look at the rockers in question, its a set of 12 for a 6 cylinder 3800 cc engine? Pushrod lengths of 7.00". The only non stock rockers I've seen are the 1.8(2), stock is 1.7.
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How much can you spend or are you willing to wait/get a loan? Everything really needs to be spec'd together for optimal performance. And, my opinion is you should get power with cubic inches first, then if you want more you still have room.
Start with a Gen 4 5.3L block and send it to R.E.D. to be resleeved. Or spend a grand more and get an LSR (assuming the Gen 4 block is sent to Katech for squirters). LSR comes with piston oil squirters now, I think.
Start with a Gen 4 5.3L block and send it to R.E.D. to be resleeved. Or spend a grand more and get an LSR (assuming the Gen 4 block is sent to Katech for squirters). LSR comes with piston oil squirters now, I think.
I was referring to the link that you posted from earlier today..
https://zzperformance.com/products/zzp-1-9-rocker-arms
https://zzperformance.com/products/zzp-1-9-rocker-arms