Well been looking at heads and cams all week.......so many choices lol....i know the cam is a little conservative but just looking for you guys opinions!


Iron 5.7 10:5:1 SCR w/64cc head
PRC Stage 1 ls6 heads
TR220 cam on a 112
Headers & all the bolt ons
4.10's and a 3200 stall
This will be going in my 78 swb C-10



I know there may be a better cam out there but ive been reading alot of good things about the TR220 on here and on tech.....

Let me know what you think!

 

PRC 220cc 5.3L Stage 2.5 CNC Ported Heads

and a

224-226 cam.

thats what i would change.

 

might have consider what you said! who make's a 224/226 cam? id like to see the specs......i also may be running a 75-100 wet shot

thanks for replying

 

I'd actually stick to your original plan and not over cam. You have a heavy truck, not a Camaro and I think you'll really appreciate having that low end to mid range power while being able to pull hard to the stock red line. Something like a 220/224 cam with a 112 lsa to bring on the torque faster and bring your peak torque numbers sooner.

Here's my suggestion.
http://store.summitracing.com/partde...1&autoview=sku

Edit: By the way, the Rev ranges list by CompCAMS is for a 5.7L LS1 so it's not like the cam will change any since you're boring the 5.3L out. The listed rev range is what you'll get. Start small with the cam and build around that instead of relying solely on the camshaft for your power. The cam is only 1 part in a drivetrain.

 

no one makes an off the shelf 224/226.
i was stating you want the duration to stay in between 224-226.

since you mentioned n2o, i would go with something like this...

Comp Cam:
Basic Operating RPM Range: 1,800-6,800
Duration at 050 inch Lift: 222 int./224 exh.
Valve Lift with Factory Rocker Arm Ratio: 0.566 int./0.568 exh. lift
Lobe Separation (degrees): 112
Grind Number: LS1 XR275HR-12

i run a single pattern 220/220 and it likes the nitrous. with more split on the exhaust side, it will like the n2o even more than the single pattern.

 

Ok gotcha....im still a little green on this ls engine stuff lol.....il check that cam out you mentioned....appreciate the help man! Just wanna do this right so i can see some good results like you guys! That ole gen 1 350 stuff got old real quik lol!