Thread:

patriot heads?

patriot heads, any good? im actually contemplating buying a couple sets of bare heads from them. the 320's and the 360's for a bbc. my next question is which set would u put on a blown 520ci alcohol motor 25lbs of boost, motor 85% of the time drag racing it. i spin it usually about 7500 to 8k religiously. in my opinion i think i would be at the end of the scale for the 320's because of what im doing and my cubic inches of the motor. that being said, would the 360's be to big? i need the motors hp range to pull from 5 to 8k rpm's.

Patriots are a budget head...you get what you pay for. I'm not saying they're a bad head, but I wouldn't recommend them for something that was going ot see that kind of perfromance or abuse. (I don't mean abuse in a bad way... ) With that kind of rpm and boost you need something much higher quality if you want it to last more than a weekend. The AFR 345 with a CNC chamber would probably be the least expensive, best out-of-the-box head for what you're doing.

Originally Posted by Blown$um

patriot heads, any good? im actually contemplating buying a couple sets of bare heads from them. the 320's and the 360's for a bbc. my next question is which set would u put on a blown 520ci alcohol motor 25lbs of boost, motor 85% of the time drag racing it. i spin it usually about 7500 to 8k religiously. in my opinion i think i would be at the end of the scale for the 320's because of what im doing and my cubic inches of the motor. that being said, would the 360's be to big? i need the motors hp range to pull from 5 to 8k rpm's.

With that much boost you'll want a quality head (along with the rest of the short block) like Dart, Brodix, AFR.... A blower on alky can make up for multitude of sins like small heads, but it's a compromise. I'd go with the bigger head, in fact we did. We ran a blown alcohol 565 and used Dart CNC 355 CNCs. Thing was a friggen monster. We were running 6-7 lbs boost and only spun it to around 7300 RPM (all we needed to run the 7.70 index in a flat). You can spin the engine higher if you want to, but the motor should be making over 1k ft/lbs tq from 3000 RPM on so you can gear it big and let it eat...