How do you make 350+hp in a 350?? - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

chevyc1068 · 01-25-2007, 08:47 PM

So if i went with the vortec heads what else would i need for a completed head/valvetrain. And what would it do to compression? Would I have to go to dished pistons or could I keep the flattops and still run it off 89 octane fuel?

*Billla* · 01-25-2007, 09:00 PM

Quote:

Originally Posted by chevyc1068

So if i went with the vortec heads what else would i need for a completed head/valvetrain. And what would it do to compression? Would I have to go to dished pistons or could I keep the flattops and still run it off 89 octane fuel?

Vortecs require self-aligning rocker arms - the CompCams self-aligning roller tips are a good choice. If you are not using more than .475 lift then the stock Vortec springs are fine. The GMPP Vortecs are 64cc - so depending on your existing heads there would be no change in compression.

chevyc1068 · 01-26-2007, 10:44 PM

Thanks for the input guys.

01-25-2007, 08:47 PM	#26
chevyc1068 Registered User Join Date: Oct 2006 Location: Murdock, Kansas Posts: 147	Re: How do you make 350+hp in a 350?? So if i went with the vortec heads what else would i need for a completed head/valvetrain. And what would it do to compression? Would I have to go to dished pistons or could I keep the flattops and still run it off 89 octane fuel? __________________ 1968 C-10 longbed, 307 V8, 4spd- currently under construction

01-26-2007, 10:44 PM	#28
chevyc1068 Registered User Join Date: Oct 2006 Location: Murdock, Kansas Posts: 147	Re: How do you make 350+hp in a 350?? Thanks for the input guys. __________________ 1968 C-10 longbed, 307 V8, 4spd- currently under construction



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