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Ghost's68 · 06-01-2017, 09:16 AM

Hey guys!

I'm going to be doing some work on my 5.3 that's in my 68. Currently it's got a intake, long tube headers and dual exhaust. Pretty much stock.

I plan on getting a Brian Tooley Racing truck cam stage 4 with springs and hardened pushrods. Aside from the cam I'll be doing a head swap, going from the stock 862's to 243's.

Should I raise the compression on the motor? I live in Cali and only have access to 91 octane so what's a good compression ratio to shoot for? I honestly have no experience with compression and would like to get your input on it.

Thanks in advance guys!

06-01-2017, 09:16 AM	#1
Ghost's68 Registered User Join Date: Jun 2016 Location: American Canyon, CA Posts: 253	Question about compression Hey guys! I'm going to be doing some work on my 5.3 that's in my 68. Currently it's got a intake, long tube headers and dual exhaust. Pretty much stock. I plan on getting a Brian Tooley Racing truck cam stage 4 with springs and hardened pushrods. Aside from the cam I'll be doing a head swap, going from the stock 862's to 243's. Should I raise the compression on the motor? I live in Cali and only have access to 91 octane so what's a good compression ratio to shoot for? I honestly have no experience with compression and would like to get your input on it. Thanks in advance guys!