351 testing waters.
Senior Member
Joined: Jul 2010
Posts: 1,414
From: Missouri
1st Gear Member
I think Bill position is that the porting on the head is maxed out at about 300cc's, with the 350 & high rpms, the stock porting is limiting the output.
Weber cams are ok, but generally your trying to squeeze more HP by opening up the cam timing... but with a 351 the porting openings are restricting the full use of the modded-cam. With a 250 the increase in cam performance is realized.
For the bang for the buck, porting is strictly for racer's trying to squeeze every HP out of the cc's.
If your putting a new weber cam in, go for torque at lower rpms, not the max high rpm mod.
Weber cams are ok, but generally your trying to squeeze more HP by opening up the cam timing... but with a 351 the porting openings are restricting the full use of the modded-cam. With a 250 the increase in cam performance is realized.
For the bang for the buck, porting is strictly for racer's trying to squeeze every HP out of the cc's.
If your putting a new weber cam in, go for torque at lower rpms, not the max high rpm mod.
Thread Starter
|
Senior Member
1st Gear Member
Joined: Nov 2010
Posts: 298
From: Los Angeles, CA
1st Gear Member
well I finally got the 351 installed last night after work with the help of a few really good friends. got my 20 miles in and changed the oil and was in bed by 4am 
. Defiantly can feel the extra displacement and so far jetting seems to be working.
. Defiantly can feel the extra displacement and so far jetting seems to be working.
Thread
Thread Starter
Forum
Replies
Last Post
