Hans,
Looks like you have a pretty good build going. The Vortec heads
work pretty well out of the box. In a blown application I would
upgrade the valve springs..or at least the intake springs. I was
running around 10lbs with my ATI Procharger. With a stock 350hp/396 I
ran high tens. With a better 454 I ran 10.33/132 in my 70 Chevelle.
Pump gas friendly combo. The blower will amaze you. As far as fuel
system you will need a good one. I have an SX pump(similar to
aeromotive 1000). If you really want to buy it once and forget it a
magna 500 will work.
http://www.personal.kent.edu/~wbainey/CHEVELLE.htm
Walt
- Original Message -
From: [EMAIL PROTECTED]
Date: Wednesday, March 30, 2005 10:56 pm
Subject: [Chevelle-list] What cylinder head to use
Hi all
I have been lurking in the background, and due to house selling,
getting green card and laziness I have not done very much to my
Camino. Well, the motivation has increased specially as I have got
some money to complete the engine, and here I very much would like
to get your feedback.
My basic idea is to use a Vortech supercharger with a Holley or a
Demon and go for 11 PSI. . The bottom part is already done, 4-bolt
mains, 362 cu, Eagle crankshaft, rods and CP pistons and with 64
cc head the compression rate will be just below 8.
The camshaft is 234 int./244 exh, lift .488 and .510 lobe
separation 114 degrees
The heads I consider to buy are Vortec 25534421 or 25534431, the
main (only?) difference between the heads are the volume of the
intake and exhaust ports. They are significant bigger on the 31 head.
Going with an overloaded motor, is there any advantage of bigger
ports, or is there no significant difference?
Any other heads you think I should consider? Price for the heads
for gmpartdepot is 478 and 525 USD per piece
Anybody with experience from the Vortec supercharger? Any other
brand you recommend?
Fuel pump will be my next consideration, not sure how to calculate
the volume needed, but pressure must be above 35 PSI.
Hans
The way I see it,
a car isn´t just a way
to get from point A to point B...
The car IS the point
Jesse James
