by camoit » Sat Nov 13, 2010 9:45 pm
this is soon to be my department. First question is it an early model block or the vortech block. Edlebrolk make a manifold that will go on eather type engines. And yes then a carb will bolt right on to the manifold. Early model blocks blocks don't have the counter shaft. and the manifold bolts point at a 90 deg angle to the the head, just like a V8. vortec heads the bolts go straight down. and came with mulit port injection crap. Vortec block also have a plastic timing cover and you are limited on what you can use for internal parts. The early models had TBI injection. Go to my build thread for more information on the engines and changes made. Some things are interchangeable some are not. I used early model block with vortec heads. More flow with out having to do a lot of head work. But then again I'm not holding back on the cost of the build.
Now on the carb size if you keep it stock use a 500CFM carb. If you start to pump it up then you will need to go bigger. I have a 650CFM going onto mine but I have 10:1 compression if under 10:1 then 600CFM with a cam. There are lots of variablies be careful not to over do it on the carb. I have all the information and specs on my build thread under first gen. If you are going to use FI then your cam selection is limited. A gear drive cam will not work with FI. It's to noisey and the ignition will go into full retard. It thinks the engine is knocking.