Quote:
Originally Posted by steve25
First and foremost what is the motors hot cranking compression?
Larger port higher flowing heads will not help at all in terms of better acceleration below 4000 to 4500 rpm so strip that notion out of your mind.
Your leaving too much in hands of so called experts when it come to distributor timing, and not being able to check it yourself is leaving you behind the 8 ball .
You car set up right and with those rear gears should anniilate the rear tires at will!.
Here’s how your HEI should be set up.
|
When you are asking about cranking compression, do you mean per cylinder. If so, they all measured between 159-166psi. The only reason I started thinking about heads is because that is what I was being told by people more knowledgeable than me. Butler, KRE, and Cliff all said that changing my heads would give me more air that the motor needs and generate the power I was lacking. I was told that the 96 heads do not flow great ( I only have the 3 angle and milled a little) and that I want to increase my compression for my cam. 2 of those three mentioned that the cam needs to be put 4 degree forward to 109, and that on center, it will be sluggish. I asked the builder about my concerns and he sent me videos of the same build in a Firebird and it seemed very lively.
I will be honest, I do not know what moving the cam will do to my driveability etc, I am just disappointed in my current setup and for the spring, I would like to wake up my setup or get it set properly if it is not. I am happy to save money wherever I can obviously as I would prefer not to spend 5k on heads/rockers etc. My vehicle prior to this was a 1980 z28 with a 350 crate motor, reverse valve body TH400, 373 gears, that was feel it in your pants way faster