Suggestions I have received on
how to get more HP out of the engine.
The Edelbrock heads
use round port headers.
So, you would have
to get them if you use Edelbrock heads. They make them for
Firebirds.
The factory
Quadrajet in 78 was 800 CFM. :)
It won't be too
much.
With your 26" slicks
and figuring a 6500 RPM finish line, you would be going 120 MPH.
That would be a low
11 second 1/4 if you make enough HP.
The roller cam would
depend on what you end up using for the rest of the combo.
With the 48 heads,
use a cam around .550" lift, 112º LSA figures.
Comp Cams has some
good ones.
For a solid lifter
cam, about the same numbers with the 48 head.
More from the same source
Depending on how
much you want to spend on this engine, a roller cam would be the
way to go.
Then you would need
the Edelbrock aluminum heads, etc. :)
The 48 heads will
work good, use some good valve springs and possibly mill the
spring seats for a taller spring.
They will make the
compression ratio around 11 to 1 with a .030" mill.
The Edelbrock Victor
intake is one of the best for the Pontiac.
The 700 CFM you have
may be good.
I'd use a 800/850 if
you can find them. (4780/4781 List number on the Holley)
The 4.11's would be
better for racing.
It should help your
ET's a bunch.
This sounds like
good advice and I think I will follow it.
