Originally Posted by slimcheese
Building my brother up a little peppy 350 for his 87 c-10. Stock 1983 350 with 882 heads. Installing summit aluminum 62cc heads with a thumper cam good for 1800-5600 (close I think,lol) edelbrock air gap intake with a holley 750 vac. sec. We installed a 2800 stall and 3.90 gears and a mini spool. Combo sound good for a good little street truck?
I'm not at all down w/the Thumpr
cam series. I suppose if I was MADE to run one, the least of the three evils is the smallest one, but if you look closely at the specs, you will see that it is a compromise of epic proportion.
It might sound bad, but that's a check written that the engine can't cash, if you follow me. In other words, all bark w/very little bite.
For less $$$ you can buy a decent Summit cam like the single pattern 1104, the 1105 mentioned above by Cunferferth or even the 1106 (also single pattern) and make more power and have as good if not better all around driveability.
The heads you're getting really don't need the amount of pattern split that the Thumpr has, or even the 1105 for that matter. But the 1105 is at least ground on a 114º LSA (as are the other Summit cams listed, I believe) which, while doing nothing for that fake "racy" idle, WILL help the idle vacuum, etc.