its on the front of the block its cast into it. Like this.
Your machine shop is retarded. 4.8/5.3 is the same blocks, same bore, just different crank.
its on the front of the block its cast into it. Like this.
Your machine shop is retarded. 4.8/5.3 is the same blocks, same bore, just different crank.
Name: Mark,
God created turbo lag so nitrous trucks could have a chance.
http://www.ls1truck.com/forums/my-ga...tml#post274877
How much of a hit in performance will I take? My receipt says 5.3L not 4.8 so I have a valid reason to take it back. If I change the crank will it be equal to a 5.3? Is it worth the flight to take a back and get my money back?
if this was just a rebuild not much. The 4.8 and 5.3 only had 15hp difference between them. My 4.8 made 450hp/450 tq on 10psi. Depends on how much performance you were looking for.
Name: Mark,
God created turbo lag so nitrous trucks could have a chance.
http://www.ls1truck.com/forums/my-ga...tml#post274877
What did the pistons you took out look like?
Bad call by the machine shop. The crank and pistons are for a 5.3L so all is good. I'm glad I had a chance to write you guys and look online, or I would have call the wrecking yard and looked like a ass!
Thanks guys for th quick help
Carnell
easiest way to tell with the heads off is if the pistons are flat-tops or not. 4.8 has flat; 5.3 has dished (except the L33 - it had flats too, but was an aluminum block)
00 FRC - just top end, exhaust, and a hot-air intake
99 Sierra - 5.3 / 5spd
↓ click the pic for the build ↓
I read that last night. I'm glad I took allot of pictures during the tear down
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