Time to make it a hot rod again. I bought a pair of 200 cc Sprtsman II 2.02/1.60 angle plug heads and mild stall converter.
Anybody ever ran these heads on a 350? What cam did you run?
A good all around cam is the Extreme Energy 268H Comp Cams grind number
CS XE268H-10
Pair this with your heads and an Edelbrock Airgap intake with a 650 Holley and I think you'll be pleased.
You can use a stock torque converter but, I'd go with a 2,000 to 2,200 stall.
The number one mistake made by people is too big of a cam and the second biggest mistake is too big of a carb.
I have a Comp Cams Extreme Energy XE274 (one step above the 268 cam mentioned above) in a 406 sbc in my Crosley. Has run as low as 10.30's in a 2,300 lb. car. If you put too much cam in you kill low and mid-range power. The more displacement the engine has the more cam you can use. I believe the Thumper series uses more duration to give it a lumpy idle. Above idle it functions like any other after market cam.
I was looking at dyno results on the Comp Cams site. In a 358 sbc the 268 cam made more horsepower than the 274 cam at 2,500 rpm. The 274 cam didn't pass the smaller cam till about 5,000 rpm.
Picking a camshaft is both exciting and confusing. Have fun.
Enter your email address to join: