buddy of mine has a 98silverado with a 5.7 vortech... he's wanting to put a cam in it because apparantly he fell into some money or somethin haha.... anyone here have any suggestions??? it's a stock truck and he just wants it to sound good sitin at a idle but he would like to get a little power from it as well... so any help will be greatly appreciated.

thanks
daniel

 

Cc306

 

Does he have his supporting mods? He will also need new valve springs and the highest lift he can go is .480 stock, .530 with .050 locks. Any higher he will need to modify the heads. Will he get this tuned for the cam and what about his torque converter?

He does not want to get a bigger cam too because our fuel injection is limited, along with the intake manifold. To allow more fuel the intake would need to be changed out, however it is good up to 400hp. Another problem is the highest he can rev is up to 5800 unless he changes his entire computer to a newer van model's.

 

well he's not wanting to mod the truck really... just wants the cam for show i guess you can say so he wont be getting a stall, intake, etc. we'll put springs and retainers lifters and all if needed.. just trying to get an idea of how big we can go without makin it too big of a job.... parts so far seem pretty cheap

 

how about this??

Cam and Lifters, Hydraulic Flat Tappet, Advertised Duration 282/ 282, Lift .465/ .465, Chevy, Small Block, Kit

 

If he does what you say he is planning, he will regret it.

However, with this motor you will need a hydraulic roller cam instead of a flat tappet. Also look at the numbers at .050 instead of the advertised duration.

 

In my opinion, any cam that has the "thumpin' idle sound" is not going to be very well suited to a daily driver truck. This will be a cam with a fairly large duration (let's say 220°/230° range at .050") and a small lobe separation angle (maybe 107° to 109°). Switching out the cam to something with the sound that your buddy wants will make the truck a dog as a daily driver (even with an excellent tune). This kind of cam will come alive around 4,000 to 4,400 RPM's and will be anemic until then. If you friend wants a moderate improvement in performance, he could get something like a 206°/212° or maybe a 212°/218° cam with about a 114° LSA. It will idle a little rough if the idle speed is slow (say 600), but it would not be mistaken for a super high performance cam.

Just my 2 cents.

Steve

 

yea... i hear what ya'll are sayin.... im not gonna let him go too extreme with a cam cause it would be a slug drivin around without the supporting mods.... just lookin for a good DD cam with good sound... maybe a 113 or 114 LSA

 

There is no such thing as a good dd cam with good sound without supporting mods. A good dd cam would have no lope to it. I am sure my 218/224 would put some good lope on the 350, but he WILL definately need a higher stall torque converter with it. Heck, I will I had a smaller stall even with that cam in my 383.

 

i have a 6.0L with a 218/225 .510/.510 114LSA i love it good power band all threw and great for DD