Technical Tips > Engines - Carbies - Exhausts - Dissys

Engine upgrade

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Ray45:
Need your opinions on this upgrade......Have a 79 L48 350ci for which I have just purchased vortec heads, inlet manifold and camshaft from a 330hp Suburban Imports crate motor, which had only done 1500 ks. I intend to put a 750cfm Holley on top. Already have headers on engine.
Any thoughts on HP output or any directions on this upgrade would be appreciated.

69 DIRTY RAT:
Bore & Stroke to a 427 mighty mouse!!!!!! YEEEEEEEHAAAAAAAAA

Brutus:
What are the flow figures for the Vortec heads and also the camshaft specs?
You may also find that the 750cfm Holley is a little more than you need for that engine as is.

Cameron 77C3:

--- Quote ---Originally posted by Brutus
What are the flow figures for the Vortec heads and also the camshaft specs?
You may also find that the 750cfm Holley is a little more than you need for that engine as is.
--- End quote ---


Agree with Brutus.  Unless your beast is doing some serious RPM's a 650 should be fine.
My beast is reving to 6200 rpm, roller rockers, cam, etc with 355ci and the holly 650 double pumper, competition  style, is fine.  Bigger is not always better

69 DIRTY RAT:
Bigger is not always better [/quote]

YES IT IS!!!!!!!!!!!!!..............SPEAK FOR YOURSELF

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