Compression Ratio confession
#22
10-10-2011, 03:59 PM
Join Date: Aug 2008
Location: Portland, Or
Posts: 9,097
The smaller the runner, the more bottom end the engine's range will be. The 180 runners are good, but with the cam and engine you've descrobed I'd go a bit larger.
As for the old 1.94" or 2.02" "camel hump" or "fueler" heads, I'd have run them in a second if I could have found any at a decent price when I was looking for heads to put on my 327 this winter. As it was I found a new pair of aluminum heads for a giveaway price, so I'll make do with them. But I've owned a few SBC with the old 1.94 and 2.02 heads and love them myself. They make a wonderful head for a street/strip car, and develope great power throughout the power band. Prior to the aluminum heads being so prevalent, they were always used on any serious motor built for racing.
As for the old 1.94" or 2.02" "camel hump" or "fueler" heads, I'd have run them in a second if I could have found any at a decent price when I was looking for heads to put on my 327 this winter. As it was I found a new pair of aluminum heads for a giveaway price, so I'll make do with them. But I've owned a few SBC with the old 1.94 and 2.02 heads and love them myself. They make a wonderful head for a street/strip car, and develope great power throughout the power band. Prior to the aluminum heads being so prevalent, they were always used on any serious motor built for racing.
#23
10-10-2011, 04:07 PM
Join Date: Oct 2007
Location: The 'Burbs of Chicago
Posts: 18,306
Camel humped heads were good performance heads.....back in the day.
Head designs have gotten so much better, even some of the cast iron ones blow the camels out of the sand.
Head designs have gotten so much better, even some of the cast iron ones blow the camels out of the sand.
#25
10-11-2011, 02:25 PM
Join Date: Aug 2008
Location: Portland, Or
Posts: 9,097
Well I guess the fates were keeping me from finding the old Chevy heads until the AFR's showed up! 
#26
10-11-2011, 02:31 PM
Join Date: Oct 2007
Location: The 'Burbs of Chicago
Posts: 18,306
Let me know if you ever want to dump those AFR heads that you got "stuck" with!
#27
10-11-2011, 02:35 PM
Join Date: Aug 2008
Location: Portland, Or
Posts: 9,097
#28
10-11-2011, 02:42 PM
Join Date: Oct 2007
Location: The 'Burbs of Chicago
Posts: 18,306
I'll be more than happy to ease your pain. If you prefer iron, I have a pair of nicely worked over ones.
They're not "camel humped" by their marking, but still better than them.
They're not "camel humped" by their marking, but still better than them.
#29
10-12-2011, 08:57 PM
I'm going to throw one more question at you guys reguarding my setup. What length of pushrods are the right choice ? ;;; '78 350 std. bore and stroke, 280h comp cam, GM hydraulic lifters, AFR 1034 Aluminum heads with Harland Sharp 1.6 ratio roller rockers. I have found out there are many different lengths; 7.75,7.8,7.95,8.0 inches etc. I believe that 7.800 are stock length but with this top end will it be different ?
#30
10-12-2011, 11:57 PM
You need to measure for pushrods after assembly. There are a few things that with throw the length off. Its best to measure with a mock up push rod. Its basically a pushrod that threads together. I'm not going to get into how to do it as you don't have parts in front of you and it can get confusing. Google it, car mags have covered it a zillion times.