1991 S10 with 72MM
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Teching In
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From: Mile High
1991 S10 with 72MM I got a 1991 S10 from a buddy that had swapped a 5.3L into her when he bought it, has a 9in rear end and a built 4L80E. He had plans for FI but doesn't have funds anymore. So thats where I came in, I have a 72mm BorgWarner I ordered. Probably gonna head to to a shop to do a turbo build in it. But what would be a good compression ratio and a good boost to run on 91 octane? I want at most 600hp for now, the turbo has potential of 900hp. So I want something that can make 600, but when I am ready to go ***** to the wall at the track I want to be able to pull out 900 
I was thinking a 9.0:1 would be good enough, but I've never gone boosted before and don't know if that will do at pulling 900. My goal is to stay away from meth, race gas for as long as I can but not have a sluggish motor until the turbo kicks in.
I was thinking a 9.0:1 would be good enough, but I've never gone boosted before and don't know if that will do at pulling 900. My goal is to stay away from meth, race gas for as long as I can but not have a sluggish motor until the turbo kicks in. Thread Starter
Teching In
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From: Mile High
So I could leave stock bottom end and reach around 900
That sounds amazing but scary at same time... I'll have to invest in meth when I get up to that They are getting crazy power, I am one of the borderline crazy power card holders, but there are other's like maxxmitchell and 71chevy, skinnies, and countless other's that have gone faster than I have on a stock block.
I plan on turning my boost up from 11 to 12 or 13 this coming track outing. I just hope to hell the motor doesn't blow, if it does, well I guess callies rods, and wiseco/je pistons are next on my list
I plan on turning my boost up from 11 to 12 or 13 this coming track outing. I just hope to hell the motor doesn't blow, if it does, well I guess callies rods, and wiseco/je pistons are next on my list
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From: Milwaukee, Wi.
I'm leaving my 5.3L relatively stock. Might just give it the arp treatment on the rods and heads. Will eventually run 15lbs with a D1SC procharger and meth. If it blows, it blows, then I'll by another $350 junkyard motor and run forged internals.
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Teching In
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From: Mile High
Alright I can tell the boost bug and the hp bug are gonna be at my 24/7 once I get boosted. 
Does anyone know the highest hp for those pistons in the 5.3? I got high hope of only upgrading rods, and doing a 4" crank shaft as far as bottom end work.
Does anyone know the highest hp for those pistons in the 5.3? I got high hope of only upgrading rods, and doing a 4" crank shaft as far as bottom end work. Trending Topics
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Teching In
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From: Mile High
The crank in the ls motor's has been proven to 1000whp all day long.
Rods and pistons are your best bet, and try to just learn to stage the car efficiently and have the tune up spot on after many test n tunes to get it to spool faster. More cubes ultimately means that the turbo your using will run out of steam earlier.
Rods and pistons are your best bet, and try to just learn to stage the car efficiently and have the tune up spot on after many test n tunes to get it to spool faster. More cubes ultimately means that the turbo your using will run out of steam earlier.
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Teching In
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From: Mile High
Could you enlighten me on "stage the car efficiently." What would be a good stall to get? It would be nice to have a stall that will get me out of the hole on a good 60' which I'm sure will be terrible my first time on the track. But also the stall not kill my gas mileage. And last is this a good size turbo for a 5.3L, and how well will this do when I want to add a twin under the hood? Thanks for helping me in my quest of a great build! 
