360 vs. 318
Champion
Joined: Jun 2004
Posts: 2,811
Likes: 2
From: Ft Campbell, KY/TN
For instance, You can have a cam that does not match intake flow and you will get LESS response (Or vice versa). OR you can have a cam that does not match headflow and you will get less performance. or you can have heads that don't match the intake and you are not being optimal. See what I am getting at? Lets put it this way, if you put a 53mm throttle body on your 318...that would not give you good results. But you are saying "It is MORE air, so the response would have to be better."
THat is why putting a set of extensively ported heads on a magnum with a kegger and stock cam will not really do much.
You need to match the cam to the application. THat is why edelbrock has that "Power package" for their Performer RPM intake, heads and camshafts for the SBCs.
Last edited by CPTAFW163; Dec 16, 2011 at 02:03 PM.
Champion
Joined: Jun 2004
Posts: 2,811
Likes: 2
From: Ft Campbell, KY/TN
flat tappet cams are much more likely to be worn down or not break in right causing them to wear down fast..
This is an issue I see in the vw forums alot... also flat tappet cammed vehicles should have special oil or at least an additive that included things like zinc to provide better lubrication... many dont know this and use modern oils which have most of those lubricating properties stripped in an effort to make it more emissions and cat converter safe... so yeah a lot of those used cams are toast.
This is an issue I see in the vw forums alot... also flat tappet cammed vehicles should have special oil or at least an additive that included things like zinc to provide better lubrication... many dont know this and use modern oils which have most of those lubricating properties stripped in an effort to make it more emissions and cat converter safe... so yeah a lot of those used cams are toast.
Break in lube has zinc in it. The camshaft wore down within 20 miles, so maintenance was not the problem.
Record Breaker
Joined: Mar 2009
Posts: 1,814
Likes: 0
From: Memphis, TN
My wanting to put the 18 cam in isnt a permanent cam. More like something to do until i rebuild my engine. Hopefully sometime next summer if the money is right. I just happen to have a 18 cam in great shape that was out of a low mileage truck so i was just thinking it might be fun to try. As far as the flow you are talking about i understand that. Thats the reason i went with a 50mm tb on my 5.9 instead of a 52mm. Just beacuse it flows more doesnt make it any better. My primary goal is an absolute torque beast, i dont tow all the time but my truck doesnt see redline that often, but im having a hard time getting a parts list together that coincides. I plan on doing a .030' over bore, ive already got headers, tune and all that. A set of 1.92 valve odessa heads, and im still lost on the cam. Theres just so many variables that have to go together just right lol.