HEADS vs. COMP RATIO
Le Mans Master
Joined: Jun 2004
Posts: 6,231
Likes: 65
From: Seattle WA
St. Jude Donor '14
Better off to just buy some racing fuel and mix at home. I kept my old '69 350/350 L-46 pretty happy with a splash of Rockett mixed in
Race Director
Joined: May 2003
Posts: 10,956
Likes: 409
From: California
I would never ever never ever go again with a flat tappet cam with todays oils, and the roller will never go flat an you...
if you are going to spin this motor up to 6+K that 600cfm is not going to be adequate.
gasket thickness can not be noted unless you have all the other specs... which you dont have..but with cast heads dont go above 10.5:1, and aluminum not above 11:1... or you will ping on 92.... I know:-)...... and worrying about finding higher octane gas when out on a run is a pita...
Last edited by pauldana; Aug 24, 2010 at 02:00 PM.
Thread Starter
Instructor
Joined: Jun 2010
Posts: 120
Likes: 1
From: CT
Update
All,
Winter project COMPLETE
Everyone was right…Naturally!
I installed shorty ceramic headers ($65 at Carlisle, and I sent them out for ceramic treatment) (couldn’t properly fit an x-pipe), an Edelbrock RPM Performer Intake Manifold, Edelbrock 600 CFM Carb (both for $200 used) and 1.6:1 Roller Tip Rockers ($90 at an auto swap in CT)
It’s improved in the 3-5K RPM range and a bit snappier on the low end (probably because the Q-Jet needed a rebuild) but not significantly different.
It's all about the heads!!!!!!!!!!!!!!!
It certainly looks decent though after all the cleaning, painting and detailing
Winter project COMPLETE
Everyone was right…Naturally!
I installed shorty ceramic headers ($65 at Carlisle, and I sent them out for ceramic treatment) (couldn’t properly fit an x-pipe), an Edelbrock RPM Performer Intake Manifold, Edelbrock 600 CFM Carb (both for $200 used) and 1.6:1 Roller Tip Rockers ($90 at an auto swap in CT)
It’s improved in the 3-5K RPM range and a bit snappier on the low end (probably because the Q-Jet needed a rebuild) but not significantly different.
It's all about the heads!!!!!!!!!!!!!!!
It certainly looks decent though after all the cleaning, painting and detailing
Last edited by hadams; Apr 17, 2011 at 07:55 PM. Reason: Update: Take alook at the pictures I posted in my profile
Melting Slicks
Joined: Apr 2002
Posts: 2,337
Likes: 14
From: Norfolk VA
All,
Winter project COMPLETE
Everyone was right…Naturally!
I installed shorty ceramic headers ($65 at Carlisle, and I sent them out for ceramic treatment) (couldn’t properly fit an x-pipe), an Edelbrock RPM Performer Intake Manifold, Edelbrock 600 CFM Carb (both for $200 used) and 1.6:1 Roller Tip Rockers ($90 at an auto swap in CT)
It’s improved in the 3-5K RPM range and a bit snappier on the low end (probably because the Q-Jet needed a rebuild) but not significantly different.
It's all about the heads!!!!!!!!!!!!!!!
It certainly looks decent though after all the cleaning, painting and detailing
Winter project COMPLETE
Everyone was right…Naturally!
I installed shorty ceramic headers ($65 at Carlisle, and I sent them out for ceramic treatment) (couldn’t properly fit an x-pipe), an Edelbrock RPM Performer Intake Manifold, Edelbrock 600 CFM Carb (both for $200 used) and 1.6:1 Roller Tip Rockers ($90 at an auto swap in CT)
It’s improved in the 3-5K RPM range and a bit snappier on the low end (probably because the Q-Jet needed a rebuild) but not significantly different.
It's all about the heads!!!!!!!!!!!!!!!
It certainly looks decent though after all the cleaning, painting and detailing
