Anybody do a cam swap have advice on which one to go with.I dont drive my truck all that often,but still want a cam that is good for a daily driver.Its 2002 4.8, just want a little lop to the motor.Plan on getting a tune after this is done.Anybody know a good place in ohio.I think nelsons has a flashed pcm that they can set up and send it to you or am i wrong.thanks for the help.Ill have pics this weekend of my truck its finally warmer out and shes coming out,you guys are probably asking why my current ones are in my garage.truth is she sets all winter

 

When I decided to do all kinds of mods to my 91 454, I went with a crane cam. On jegs they usually say the rpm range of the cams so you can kinda figure what would be good for you depending on what range you want. I did notice after the cam, headers, exhaust, pulleys, blah, blah, blah that it ran like a bat outta hell. But that lasted about a month till I started having problems. I didn't have enough back pressure and all types of other problems began to occur. Therefore, I say get an exhaust that makes it sound somewhat lopey. I just haven't had much luck with performance mods. They never work well for me on daily drivers. But that's just me.

 

M exhaust makes if sound as if i have a small cam,but after hearing my camaro with a rad cam in it i want a mild cam for my silveraldo.98white5.0 what exhaust system did you have on your ss.

 

I am also on www.ls1trucks.com. There is alot of people on there with advice on cams. Hope this helps. How can you have problems with mods on a daily driver? Too much at one time?

 

Yeah i registeredat ls1 and cant post for some reason,thats were i want to ask my cam ? because there alot more techy on that forum.

 

I'm not sure why I had so many problems. It seemed like the upgrades (which were done all at the same time) opened a gateway for any weaknesses to be attacked. On a 91, things didn't do so well with upgrades, but these newer vehicles might be nicer to mods. I usually don't try messing with something on a vehicle that is controlled to so much of an extent by a computer, as these newer vehicles are. Maybe when you get that Nelson pcm flash, everything will work together. Oh and sorry for the confusion on the 91 454. I really wanted a 454 SS but the closest I could get to it was a dually with a 454. So I made it my own 454SS. It was a quick **** when it was running right. Plus the dual wheels allowed it to hook up a lot better that those single wheeled trucks.

 

ls1truck is the answer...not to downgrade this site but i think ls1 has the best info on that stuff

 

crane cams is out of biz. apparantly.

on the smaller 4.8, I'd look at a slightly smaller cam, maybe in the 210/216 112 range. Try to keep some of your low end because that motor needs all it can get.

You can also run some LS6 yellow springs for about $55, then pick up some hardened chromo 7.4 (oe size) pushrods and a basic cam swap gasket kit.
Check out Thunder Racing, or Scoggins Dickey (sp?), they both have good product selection and prices/service.

But, along with the cam swap, I'd HIGHLY recommend a higher stall torque converter. The stock engine needs it, and with any cam larger than OE you're probably going to have a higher powerband, needing that torque converter to be able to wind up the rpms better without bogging and lagging off the line.


I think gmfullsizedotcom and performancetrucksdotcom really has good depth of knowledge too. I'm not yet a member of the ls1truck forum...

 

After doing research and what other owners have recomended for the 4.8,im goin with the Z06 stock cam out of a vette with the yellow valve springs.also a 3000 stall.but i do have one question alot of guys have a 3000 stall,just wondering if a 2800 will work well.My dad is a certified tranny man for 32+ years and hes got a new one that was shipped wrong that the dealer keeped.well i can get it for almost nothin but just wonderin if its going to work.also going to rebuild the tranny while its out,only about 95$ to do so(Pays off havin tranny man in the family)heavy duty clutches and shift kit.