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Old December 4th, 2019, 01:41 AM
bigblockv6 bigblockv6 is offline
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Join Date: Jan 2013
Location: Rohnert Park, ca.
Truck: 1968 KM2500
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Default Re: Engine Data 305E

[QUOTE=James; (actually the dyno data says the engine didn't quite make it to 4000 rpm, the technician back off at approx. 3980 rpm) is not going to hurt the engine.[/QUOTE]

With the Holley 500, 2 1/2 inch dual exhaust, Flowmaster 50 series mufflers and GM HEI ignition I found that the 305E in my 68 K2500 had no problem spinning 4000 rpms before shifting from 2nd 3rd gear on the granny low SM 465 transmission. I really seemed to make maximum horsepower for acceleration between 4000 to 5000 rpms though I wouldn't do that for any long period of time.
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