SBC 350 Comp 270H cam

Chevy 350 bored .060 over Comp 270H cam, "336X" heads

[@grupoinztinkto]

Have a 350'and bought a comp cam 470/470 270H I can't wait to put it in.

[@wayne3340]

I clicked the video because it said 270 comp cam, and that's what I put in my sbc rebuild. It sounds exactly like my '64 Impala did! When I bought the car it had a tired, low compression 400 in it. I got a friend to rebuild it, and I did some reading (no internet back then) and chose a 270 comp cams unit. Unfortunately with the low compression, probably 8-8.3:1 it was a bit too much cam. To exacerbate things, after reading about carb sizing in Hot Rod magazine, I knew I needed a 600 cfm carb. (Max) My cousin with the speed shop convinced me to get a 750 instead, as he'd built lots of high performance 350s and installed 750s on them. Big mistake. I ordered a 750 Edelbrock Performer and the tuning kit, and spent lots of time playing around with it. Nice carb to tune, but I couldn't get it to stop bogging and nearly dying every time I started from a stop. That engine wants to make torque from idle to 4,000 and the cam wants to come on from 2,500 to 6,500. That, plus the big carb, every start was a pain, but once I was moving she performed better, and once the revs hit about 3,200 she pulled like crazy till around 4,500 where it sounded like it was going to blow apart! It beat my brother's '67 Monaco with the stock 440 Magnum. I'm sure it was making over 400 hp, but the drivability sucked. I wish I'd spent some money on high compression pistons and left the Offenhauser intake instead of wasting money on the Edelbrock Performer intake. Live and learn.

[@ViewThis.]

I used the 270H in a NA 400 sbc. It seemed like the perfect cam for that engine

[@ColdSmokes]

Since this cam is not available for my Mopar, I just had Crower grind me one identical to the Comp Magnum 270H. I'll have it in a couple days, can't wait to install it!

[@ViewThis.]

@@ColdSmokes I hope it will be a good thing for you. Sometimes One Man's Treasure Is Another Man's Trash.

[@jeffphillips6063]

engine was ran for over an hour before video was made

[@geoffpowell8419]

Bit of focus

[@ColdSmokes]

Sounds wicked! How much vacuum did it pull at idle?

[@jeffphillips6063]

I can't remember, it's been a while back

[@jeffphillips6063]

sold