79nova

had 4.8 from 2002 truck, going to rebuild it, they it has 42000 miles on but it looks looks like 142000miles,need a good street cam i have edlebrock performer rpm intake and set up. will be using the 350with it, going in to a 1979 nova 2 door with 2.41s gears for now i will use stock heads, thanks

xpndbl3

iTrader: (23)

cost of rebuilding it is more than buying a running 5.3L imo. good cam would be the ls6 cam with those small gears.

ZONES89RS

iTrader: (25)

True that, get a used 5.3 for 400$ and have the extra cubes, or build the 4.8 to a 5.7, then you would be even further ahead, a stock LS1 rotating assembly would be cheap.

speedtigger

iTrader: (16)

I would say determine if it has 40k or 140k. If it has 140k, I agree with the others, it is not worth a rebuild. If it has 40k, it should not need a rebuild. These motor are good for 150 to 200k miles.

If you are running a stock converter and gears, I would definitely not go any bigger than an LS6 cam and valve springs. Now with a set of 4.11s and a 3600 converter, you could go with a 220 duration cam. Small, short stroke motors really need a tight lobe center to bolster the torque, so something on 108 would be great. But, this is only with a set of 4.11s and a 3600 or more converter. If you are going mild, just stick with the LS6 cam like suggested.

Z284thgen

iTrader: (46)

my old 2000 silverado with comp 222/224 shelf cam LT's dyno tune ( way safe tune ) true duals upd cold air its made 301/276 stock tranny and stock stall but needed a stall she was a tank outta the hole until 3200 rpm then it came alive

79nova

thanks for all the imput, been looking at 5.3 down here they are nuts 5.3s with 120000 miles or morethey want 600to 900 and any one under 100000 miles they want 1000to 1500 for them, i have had this motor in storage for over 6 years, maybe later i can fins a 5.3 but for now will put this car on back burner

Paul57

I have a great street cam available if you are still looking. It is the one in this article, referred to as the "Torque Monster"...
http://www.hotrod.com/techarticles/e...camshafts.html
It is new (never run).