Yall may rember my last topic on a 1991 chevy truck engine build. Well i have put one together on paper and was wodering what yall thought
ENGINE
.030 over 350 with stock rods stock crank and new cast flat top pistons. I am using a comp xe 268 h 10 hdry flt tappet (centerline degree atdc-106, duration @ 50-224, max lobe lift .318, centerline degree btdc-114, duration @50-230, max lobe lift-320) Its going to have a set of stock vortec heads with performer rpm intake, 750 holley, 1 3/4 header. Ignition......?
TRANSMISSION
Th 350 with a 2500 stall converter
REAR END
Small ten bolt 7.5 with a locker and 373 gears.
TIRES
255 60 r15
This is a truck that he wants to be consistant but still be able to go back and forth to work in(appr. 25 miles) Any comments will be appreciated and took into concideration.

Check valve retainer to seal clearence close .480 is max lift on stock heads.

yea i just realized that. I am looking at another cam its a blue racer wg-5072 with 442.5 lift what do you think about that. and do you have any suggestions on what ignition to run on the truck.

Take a look at my sig for my '78 chevy truck...I have pretty much that exact setup. Buy the cam as a k-kit and it will come with 981-16 springs and matching retainers and locks. I used the comp springs with my xe268 and it required no machining on my cortec heads, although some people report that they had to trim the OD of the valve guide boss slightly for the same spring. For me no machining was required. I've got about 7 years on this setup and it works well. A 2500 stall and 3.73's will make it a killer. If he doesn't already have 3.73's then I would lean to 3.42's for a little lower cruise rpms if he plans on driving it a lot. Since you say that this is going to be a 7 1/2" rear end then I assume this is for an S-10 truck?