ok so i have a 99 lr4 4.8 im looking at camshafts its in a 93 excab s10 not sure of curb weight around 3400lb would be close

twin 60mm no name turbos
powerglide with a brake
4500 stall
8.8 rear with 4.10 gear
862 heads
rod bolts
head studs

i see btr has a stage 2 4.8 cam but seems small i want to make as much power as i can with wat i have but at the same time i dont want to by a cam just for a 4.8 later on i might build a bigger motor would like to use the same cam i will drive some on the street but am ok with it being on the extreme side

thanks for your help

 

 

You really don't need a "big" camshaft to make good top end power in a 4.8, especially with a couple turbos hanging off of it. Don't get hung up with the dimensions, its pointless to over-cam an engine just for a rough idle, even if it's a track toy.

contact at least 4-6 different manufacturers and see what they recommend for your particular setup. Be brutally honest and provide as many details as you can. From there you can "average" there recommendations and decide where you want to be. More than likely you'll find a shelf cam that is close enough. You might even find one used.

Also, I think that it is silly to pick a camshaft for a build based on the notion that you will use it in a bigger engine later on down the road. If you manage to blow up that 4.8 there is a good chance you might ruin the cam anyways.

good luck with it, looks like a cool project.

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speccing one cam for two different motors is tough

 

I'd be glad to help!

 

guy on face book has a new martin smallwood spec srp 5.3 twin turbo cam it was spec for a 5.3 with twin 66 bws 323/240 612 603 114 plus4 300.00 lmn if u need his info

 

That cam is too big for the short stroke of the 4.8.