4.8 cam idea

[silvyrado4.8]

hey my tuner jeremy formato wants to install 225/229 111 +3 .596/.602 cam
what do u guys think about this cam setup with a 3000 stall 373 and lt headers decent low end power ? need some thoughts thanks

[GasGuzzler]

Get some 4.10's and a 3600.

EDIT - on a 4.8 get 4.56's and a 4000.

[r.barn]

It will rob low end for sure. .... how much and whether its too much would be debatable.

[silvyrado4.8]

which i already have a 3000 circle d stall with 373s in the rear which price wise he told around 1500 for the complete install and cam and all. i was thinking more of a 224/224 112lsa how would that cam do and looking for a good lope at idle

[Madd Maxx]

If you want a raunchy idle and would still like to maintain most of your low-end power, and 3000/373 setup, take a look at GM's LS1 Hot Cam (218/227 .525/.525 112).
It has a fairly early intake valve closing event, so you'll get some decent low-end power with your 4.8.

Here's an idle clip:

YouTube - 06 Silverado 5.3 - LS1 Hot Cam

[George C]

this topic is over and over again. ppl dont realize a 4.8 is a tinyass motor. the gears and stall you run typically for a larger motor dont work so well with the 293. the 4.8 is modernday 302 if you think of it. short stroke so it can rev. you can get away with a decent cam in the 4.8 but you need the supporting mods. you need to spin the motor 7k-7500. doing so you need gears to help you thru the rpm range and large stalls.

a 3k stall is for a stock motor honestly. 373s unless your running 26" tires arent enough.



or you could settle for a small cam in the 4.8. even then your stall and gears are to small

[silvyrado4.8]

so i ran a 15 flat with my mods now how much of a difference would 456 gears make i dont mind it reving higher on the higher i dont go over 70 which my tires are 30.5 height im just trying to get the most out of my 4.8 thanks for ur advice

[George C]

depends on what hte ttruck is trapping now with rpms. you could expect 3/10s but that is a general estimate

[silvyrado4.8]

quik its trapping out 89 to 91 which its
60 2.143
330 6.220
1/8 9.654
mph 72.04
1000 12.567
1/4 15.051
mph 89.63

if that helps

[George C]

quik its trapping out 89 to 91 which its
60 2.143
330 6.220
1/8 9.654
mph 72.04
1000 12.567
1/4 15.051
mph 89.63

if that helps

rpm wise going thru traps. installation of gears help or hurt a motor. ideally you want to be at peak power crossing traps. so you gear and tire for those rpms