Biggest baddest 4.8
09-19-2004 | 09:37 PM
#32
deckhand- i belive it is a 293 it was just a miss type.
blown- ya we are hoppin to be in the solid mid 11's. i am looking for atleast 550rwhp. i just want to be back on the "top 10 fastest truck" list
blown- ya we are hoppin to be in the solid mid 11's. i am looking for atleast 550rwhp. i just want to be back on the "top 10 fastest truck" list
09-19-2004 | 09:39 PM
#33
Originally Posted by LTNKLR01
deckhand- i belive it is a 293 it was just a miss type.
blown- ya we are hoppin to be in the solid mid 11's. i am looking for atleast 550rwhp. i just want to be back on the "top 10 fastest truck" list
blown- ya we are hoppin to be in the solid mid 11's. i am looking for atleast 550rwhp. i just want to be back on the "top 10 fastest truck" list
09-19-2004 | 10:18 PM
#35
Originally Posted by LTNKLR01
litllered 4.8: hey sorry to burst your bubble but you are not the 1st to build a 4.8. then only diffrence is that mine is still only going to end up being 294ci. As for everyone else i got 435 rwhp out of my 4.8 with a stick lower end. And that was with a weak tune and a slipping 3rd gear. I would say if you are goin to stroke it then just go with a stroked 5.3 or 6.0. and 4.8's are 4l60e killers. i am on my 3rd.
09-20-2004 | 07:15 AM
#39
The 5 speed behind the 4.8's is the NV3500. It's crap, and is so weak that GM won't even let you order it w/ the 5.3. Get a T-56 if you wanna stay w/ rowing your own. 
If you wanna stay w/ the 4.8/5.3 block, I've heard of people punching them .120-over. Dunno about the longevity of a setup like that, but w/ a 4" stroker crank that would be in the 370 neighborhood. But I think that you'd end up spending about the same as the relatively cheap 402/408 packages from SLP and HPE. Why not get the extra cubes since you'd have to pull the motor anyway?
If you wanna stay w/ the 4.8/5.3 block, I've heard of people punching them .120-over. Dunno about the longevity of a setup like that, but w/ a 4" stroker crank that would be in the 370 neighborhood. But I think that you'd end up spending about the same as the relatively cheap 402/408 packages from SLP and HPE. Why not get the extra cubes since you'd have to pull the motor anyway?
