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Re: No low end torque
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Posted by Brian in Ne on December 16, 2006 at 11:42:39 from (12.37.227.212):
In Reply to: No low end torque posted by North Dakota H puller on December 16, 2006 at 07:18:01:
I experienced this a few years back with a friend's H. Only he had used the SH/300 cam and timed the engine for max power at high engine speeds. Same thing when the engine pulled down it fell on its face. We talked about it and I suggested to time the engine back to stock so it would have its higher horsepower down in the RPM band so when it starts to lug it kept pulling. It worked. Remember that engine on an antique (unless its a Div4 or 5 NATPA) is only going to stay at high idle for a short time down the track. If you are pulling Div1 or 2 and maybe 3 use the SH/ 300 or 350 cam. Don't port the intake too much just clean it up a little or you will loose your ports air velocity.Don't polish the intake. Do match the ports and manifold. Port and polish the exhaust, not too much again! And LEAVE the stock valves in the head! On my H, I have the 350 pistons. The engine flows 83cfm @ 1950rpm. My carb flows 88. And it pulls awesome!
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