Who's boosted a stock 4.8L?
Thread Starter
Joined: Nov 2004
Posts: 1,273
Likes: 3
From: Rochester, NY
Who's boosted a stock 4.8L? I've done some research but not coming up with a ton. I've seen a small handful of threads but not much info.
Anyways, we've recently picked up a 2000 4.8L out of a truck. Deal was too good to pass up so we figured we'd just buy it and leave it in the garage for a rainy day.
Anyways, just curious on boosted results. How much power you're getting out of them on stock internals, etc. I may just end up throwing it in a Fox Mustang for a quick beater car when me and my buddy's cars are apart or whatnot.
Thanks,
Adam
Anyways, we've recently picked up a 2000 4.8L out of a truck. Deal was too good to pass up so we figured we'd just buy it and leave it in the garage for a rainy day.
Anyways, just curious on boosted results. How much power you're getting out of them on stock internals, etc. I may just end up throwing it in a Fox Mustang for a quick beater car when me and my buddy's cars are apart or whatnot.
Thanks,
Adam
went a 11.13 on 10lbs in full weight 98 trans am...stock longblock with vic jr intake....car was untuned so running like crap...th350 with junk slipping converter...think car had some 10.8's in it though
9 Second Truck Club
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Joined: Sep 2006
Posts: 3,672
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From: Colorado Springs, Co/ Central, Ca
im running a stock bottom end with ported 317s and arp rod bolt and head studs, ls9 headgaskets
still working on the tune but its seen as much as 12psi without any complaints once everything is all done looking to make 18-20psi and somewhere in the 700rwhp range
still working on the tune but its seen as much as 12psi without any complaints once everything is all done looking to make 18-20psi and somewhere in the 700rwhp range
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Im using 72lb. Injectors to start. Prolly need bigger though. Shooting for 700rw thru built th400 and 12bolt
Sounds like combo im puttin together. But using 317 stock ports and heads milled .005 just for flat surface. Also plan on 20+psig on pump. should b no prob with that low of scr.
Im using 72lb. Injectors to start. Prolly need bigger though. Shooting for 700rw thru built th400 and 12bolt
Im using 72lb. Injectors to start. Prolly need bigger though. Shooting for 700rw thru built th400 and 12bolt
im looking to upgrade my whole fuel system soon and get some meth for boost levels over 10#
im looking to keep this 4.8 in the car for a while, im tired of working on this damn car and just want to drive it lol and in the meantime time i have a ls6 block that ill put together with a 4.8 crank with forged rods and pistons and once that is done i will really turn the wick up on this stocker 4.8 lol
im running a boosted 4.8 and that is all I will run. compared to many 5.3s that rev to 6500, im giving up 10% cubic inches but gaining 18%rpm by shifting at 7700 because of that short stroke. I'll take that trade any day
http://www.chevelles.com/forums/show...2&postcount=45
http://www.chevelles.com/forums/show...2&postcount=45
