mm826
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Everything posted by mm826
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A 427 & a 460 are the same engine exactly. A computer setti g is the differance. It takes about anhour to program it. A 427 is 1550 lbs of torque and a 460 is 1660 lbs. You only change parts if you are going the 460/480 hp or the 460/487 hp. I have a 99 ch 613 w/a 427 programed to 460. I took out the 13 spd and put in a 18 spd. Out pulls a lot of trucks.
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I'm broke down now in va. I think I need a fuel pump on 1999 ch-613. No power, low boost, but low pyro temp. Hardly idles now. Is the primer pump the actual fuel pump ?
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Sounds like a 18-speed tranny would work well w/those rpms.
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E7 427 Valve set - inoperative engine brakes
mm826 replied to SWiber's topic in Engine and Transmission
Each head has a solenoid in it. Change them. If that doesn't cure the problem, puta high volume oil pump in it to keep the top end well oilled. -
In 1988, I put a rto 12513 in my 1976 F model sleeper. It had a 300hp & a 5 speed to start with, & 4.17 rears. The truck ran great. More power & more top end, about 10 mph. Aat that time only the high gear high split was overdrive, .87 I think. Today's 13 & 18 speeds have the high gear both direct & hi split are overdrive. Todays 13 & 18's are RTLO 16713 A or heavier. You have to shorten the driveshaft a little & change the clutch fork knuckle. But it wil be a whole differant truck for the better. And for road work the 72 was alot better than the 62 mph.
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