Optimizing a 460ci stroker
Thread Starter
Joined: Nov 2001
Posts: 45,369
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From: Chicago, IL
I can see about getting a copy of the dyno, but I can assure that it was running on all 8 cylinders. Car is about 3900 lbs and been 11 flat on a small drag radial. it's been 98/99 in the 1/8th in 3500+ DA so I think between a TB swap, air intake swap, some more tuning I think he'll go high 10's on a good tire.
Thread Starter
Joined: Nov 2001
Posts: 45,369
Likes: 1,803
From: Chicago, IL
I was not at the dyno, but from what I heard, and his tuner buddy was there in the car, it was on all 8 cylinders.
I urged them to pump for compression.
I urged them to pump for compression.
Thread Starter
Joined: Nov 2001
Posts: 45,369
Likes: 1,803
From: Chicago, IL
Well gents, he really appreciates your comments, he went ahead and ordered a NW 103 TB. I'll talk to him about the runners.
He currently has a 3.5" air intake, a tube that curves to the driver's side. He'll change that to 4.0" and if there is room to make it a straight shot will try it, but my feeling is he can't do that.
What do u all think a motor like this should do RWHP wise on 93 pump with the changes, unlocked 4L80E?
He currently has a 3.5" air intake, a tube that curves to the driver's side. He'll change that to 4.0" and if there is room to make it a straight shot will try it, but my feeling is he can't do that.
What do u all think a motor like this should do RWHP wise on 93 pump with the changes, unlocked 4L80E?
That's why I said earlier that 125 to 150 is a big ask just from an intake tract update. I think something else is off. What it will make with a new intake tract and what a 460 c.i. should make are 2 different things. Tsp and Golen both have 700hp turnkey 454s.
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Is 610 ft lb at the tire real from the dyno, or was that converter flash? If it made 610ft lb at the tire, you should make >600 hp at the tire at 6500+.
Do you have a picture of the dyno sheet?
Do you have a picture of the dyno sheet?
I can see about getting a copy of the dyno, but I can assure that it was running on all 8 cylinders. Car is about 3900 lbs and been 11 flat on a small drag radial. it's been 98/99 in the 1/8th in 3500+ DA so I think between a TB swap, air intake swap, some more tuning I think he'll go high 10's on a good tire.
Something is way off from the dyno numbers that’s why I want to see a graph. I’m thinking unless 610 ft lb is from converter flash it never made 610 at the tire.
610 ft lb at 4200 rpm would be 488 hp. We already know it didn’t peak at 488, and I’d be surprised if peak torque was really that low. 550 ft lb at 6000 rpm is 628 hp.
It’s just not adding up.
The car runs 11 flat down the dragstrip so we have to assume it’s not into valve float or some other major issue.
488 hp at 5800 rpm is only 441 ft lb it can’t drop from 610 peak to 441 by 5800 rpm.
610 ft lb at 4200 rpm would be 488 hp. We already know it didn’t peak at 488, and I’d be surprised if peak torque was really that low. 550 ft lb at 6000 rpm is 628 hp.
It’s just not adding up.
The car runs 11 flat down the dragstrip so we have to assume it’s not into valve float or some other major issue.
488 hp at 5800 rpm is only 441 ft lb it can’t drop from 610 peak to 441 by 5800 rpm.
What’s stock on the LS3, a 90mm? No doubt this engine is severely choked, and you mentioned tuning needs work, which in itself can show big dividends if the tuner is good. On a 460 I’d have to believe that a 4” cold air setup feeding a 103 tb, up from a 3.5” cold air setup into a 90 or even 92 tb would pick up nicely. Maybe 25 or more, IMO. In my experience here tuning is everything on the larger engines especially.
https://www.texas-speed.com/p-3967-t...y-package.aspx
https://golenengineservice.com/lsx-c...gine-upgrades/
700hp with ls7 plastic intakes.
https://www.proformanceunlimited.com...-crate-engine/
750+ with AFR LS3's and a sheet metal intake.
https://golenengineservice.com/lsx-c...gine-upgrades/
700hp with ls7 plastic intakes.
https://www.proformanceunlimited.com...-crate-engine/
750+ with AFR LS3's and a sheet metal intake.
Same dyno I had my 364 on with much the same mods made just under 450whp and that setup ran low 11's at 4000lbs, something is wrong if a 460 is running the same as that.
