The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - How can I build 454 for low RPM Power/Torque?

Average Joe · 10-03-2012, 01:01 AM

I've read you cant go wrong with peanut port heads for stump pullin' power. Oval port heads like the 049 and 781 casting will make more power but will be at a higher rpm. I think a slight domed piston and a little more cam will do wonders for a smog era 454. IIRC stock compression on a 70's 454 was like 8 to 1. I'm considering a similar rebuild on my 74 454. I'd like to get better than my current 6mpg when towing my 6500# travel trailer. Hopefully ProstreetC10 and others will chime in as they seem very knowledgable with BBC's.

10-03-2012, 01:01 AM	#12
Average Joe Registered User Join Date: Feb 2009 Location: Southern Oregon Posts: 1,352	Re: How can I build 454 for low RPM Power/Torque? I've read you cant go wrong with peanut port heads for stump pullin' power. Oval port heads like the 049 and 781 casting will make more power but will be at a higher rpm. I think a slight domed piston and a little more cam will do wonders for a smog era 454. IIRC stock compression on a 70's 454 was like 8 to 1. I'm considering a similar rebuild on my 74 454. I'd like to get better than my current 6mpg when towing my 6500# travel trailer. Hopefully ProstreetC10 and others will chime in as they seem very knowledgable with BBC's.