Hagen Brothers farms,Goodrich ND | Jim, I did something like that to my old 80 GMC crew cab 1 ton. The stock 292 was underpowered for pulling gooseneck trailers, so I hopped it up a bit. Bored it 60 over and installed high compression propane pistons. Ported the head and installed oversize stainless steel valves. Added an Offenhauser 4 bbl aluminum intake manifold and headers. I topped that with a big Motorcraft carb and IMPCO propane /gasoline dual fuel mixer.
After the mods, it will pull a gooseneck trailer with a 4020 on board at 65 mph with lots of throttle left.
Runs on either gasoline or propane.
Edited by Jon Hagen 6/9/2009 23:46
 (Mod 292.JPG)
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 Mod 292.JPG (60KB - 58 downloads)
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Chev 950 with 6 cyl
