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panhandler62 · 05-18-2010, 07:55 PM

I used to have a 72 Camaro with a 350. When I got it it was set up with large chambered angle plug heads and a 2bbl carb. It got around 17mpg.

I swapped the manifold for a Torker II & a 600 cfm Holley. It got aroung 15mpg.

I cracked one of the stock heads and put on a pair of small chambered 283 heads. It got around 15mpg.

I swapped the 283 heads for a pair of camel humps with 2.05/1.94 valves and mild pocket porting and lost the 600cfm for an all mechanical 780cfm Holley and added a set of Hookers -- it got around 13mpg but ran like a bat out of hades.

Bottom line is I never got back to the milage it was getting when I bought it stock.

05-18-2010, 07:55 PM	#17
panhandler62 Java Mechanic Join Date: Jun 2005 Location: Martinsburg, WV Posts: 6,764	Re: 283 heads on 350 I used to have a 72 Camaro with a 350. When I got it it was set up with large chambered angle plug heads and a 2bbl carb. It got around 17mpg. I swapped the manifold for a Torker II & a 600 cfm Holley. It got aroung 15mpg. I cracked one of the stock heads and put on a pair of small chambered 283 heads. It got around 15mpg. I swapped the 283 heads for a pair of camel humps with 2.05/1.94 valves and mild pocket porting and lost the 600cfm for an all mechanical 780cfm Holley and added a set of Hookers -- it got around 13mpg but ran like a bat out of hades. Bottom line is I never got back to the milage it was getting when I bought it stock. __________________ Keith 11 Lincoln MKT -- Momma's wagon 13 G37xS -- middle age crazy car 68 C20 Fleetside -- RIP Decorating the whole town up at a cost of $27 ....