Posted by chris s denver (IP: 216.98.199.140) on November 21, 2000 at 02:51:44:
In Reply to: 302 vs. 351 posted by BenB on November 20, 2000 at 16:44:05:
I have a 351w in my 74 merc...The engine is wider and it is harder to make it fit, but if you raise the engine mounts up a bit, it helps a great deal. I all your worried about is headers, then that is a stupid worry, with a bit of work, you can have a set of factory manifolds flowing better than headers..
Open the ports a bit and then smooth them out to a polished finish and then send them to be jethot coated inside and out. The will flow a great deal better, and less temp in the hood area.
It's a well known FACT, that you can make them flow better, it's just a lot easier to buy a set of headers..The mod to raise the motor mounts will make more room too. We moved mine up 6" for a better center of gravity and that will also up 60 foot times!
I am racing mine though. This year it's only a 14 second car at 6200 feet above sea level... thats a mid 10 car at sea level. of cours thats aprox...damn keyboard stickin
any ?s email me.
chris