Pelle- I hadn’t seen any response to your request, so here’s my thoughts.
Keep your existing heads, open them up to 2.19/1.88 valves if you haven’t
already. Match them to the manifold and do some touch-up work in the bowls.
I’d suggest using a hydraulic roller cam with about 230 degrees of duration
at .050. This would give you a very powerful street car with manners enough
that it could be driven anywhere. I would expect torque numbers to be about
500 and honest HP at about 375-400.
Devin
_
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Pelle Andersson
Sent: Monday, May 14, 2007 2:04 AM
To: 'The Chevelle Mailing List'
Subject: [Chevelle-list] How should i progress with my 402?
What would you do if…
I preferred keep my 399382071..oval...OPEN...402, 113cc chamber,
255/114 ports heads
My holley 800 cfm carb, my Edelbrock RPM Performer manifold and my Mallory
HEI
What cam would you choose?
What else do I have to do?
If I have to change the heads, what casting would you choose?
In the end I’d like to get an engine in the 400-450 bhp range!
Is that possible?
Due to a tight budget right now I have to try to keep as much as possible
of the engine! I’m about to replace the lifters due to a faulty lifter so I
thought
I’d do a little budget “tune up” at the same time.
Best regards Pelle
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