Thread: 300/ZF update
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03-19-2010 09:39 PM #1
300/ZF update
I haven't drove the truck much, maybe 1000 miles. It's a 92 F250 with the ZF 5 speed. Engine is a stock 300 with a 260H Comp cam, Offy C, 390 Holley 4bbl, Efi manifolds and the GM ignition module on a durasopark II dist. It starts great in any weather and runs smooth, drives out real good. But lately I have have noticed (as would be expected) that the 260 cam lacks good low end grunt. I have powered it out a couple times. You have to keep the rpms up and slide the clutch to get a load going. Like trying to pull start a 6.5 Chevy diesel or back up with a big load of fire wood. At some point I would like to swap on a ported head, chevy rockers and Isky mile-a-more cam.
to me the beauty of a 300 was always it's low end grunt, this engine is lacking that.
John's ride to the cemetery, his beloved Billings OK bus, The Baby Elephant!! Traveling in style!! As his service was starting I couldn't figure out what the music was, heavy on a flute in a jaunty...
John Norton aka johnboy