460 Jetboat engine destruction/rebuild - 460 Ford Forum
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post #1 of 3 (permalink) Old 03-31-2016, 11:51 AM Thread Starter
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460 Jetboat engine destruction/rebuild

Recently purchased a 77 Spectra 18 with a 460BBF, 2 hours on the lake and the engine locked up. Machinist believes the oil pump uncovered and sucked air. Wadded up 1 rod but didn't hurt the block

Doing a very mild rebuild as this is just a cruiser/tube puller. But as my first jetboat hoping I could get some insight especially to a new cam.

Going with
Eagle Cast Steel stock stroke crank
Stock Football rods
D3VE heads
10qt armondo jet pan
Sealed power 134m main bearings, 8-7185CH rod bearings
Durabond FP-30 cam bearings
-And lastly ive seen the summit 3501 cam suggested for jetboats any thoughts on this cam?

Anyway glad to have found this site and heres some photos.



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post #2 of 3 (permalink) Old 04-02-2016, 06:25 AM
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As to camshaft selection, valve events and static compression go hand in hand so as to end up with a dynamic compression that is compatible with the octane rating of the gasoline to be used and many other variables. Therefore, what pistons are going into the engine?

If I was going to go with the stock stroke, I would use a stock 460 crank over an Eagle cast crank.
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post #3 of 3 (permalink) Old 04-02-2016, 03:30 PM Thread Starter
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Sticking with stock stroke on this one. I can get 93 octane easily in my area so thats what I plan to run. Pistons will most likely will be LF2402 TRW forged units. The cam I mentioned its just one I saw pop up several times over at performanceboats.com. I just know I have to keep the lobe separation around 112-114 to keep reversion issues down.

And finally sorry for posting this in "archives".... didn't realize what i had done till it was too late.
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