390 intercepter

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Jul 20, 2002 | 10:43 AM

SOUP

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390 intercepter

Maybe some of you can tell me what special modifications they did to the 390 police intercepter motors. I found one that was out of a 63 police car and the guy just wants to get rid of it but I would like to know a little more about it. thanx, mike

Jul 20, 2002 | 04:28 PM

Ratsmoker

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390 intercepter

The 390PI had 10.1:1 compression and a solid cam. That is pretty much all I know.

Jul 20, 2002 | 06:13 PM

Mil1ion

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390 intercepter

also;
Solid lifters
Ungrooved Crank

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Jul 20, 2002 | 09:19 PM

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390 intercepter

It looked like to me and a friend that the 390PI is an internally ballanced, so another question is would this be a very good motor for a 72 f-250 that pulls a trailer and sometimes hauls a 9 1/2 foot cabover camper? Also what did you mean by an ungrooved crank? On the old 390 that I had built for my truck I had put an edelbrock manifold, cam, lifters, pushrods, roller timing chain,(all from comp cams), bored .030, heads shaved .005, ARP bolts throughout the intire engine, valve job w/new valves, locks, retainers and springs(also all from comp cams) and toped with a carter carb and k&n filter, the ignition system is through a MSD-6 ignition box and coil to match. I would like to use as much as I can on this 390PI. Do you think this would be a good combo to use on the 390PI?

Jul 20, 2002 | 10:08 PM

Mil1ion

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390 intercepter

AFAIK On the 61-63 PI & Special they didn't groove the con rod journals on the crank.
On the 63-65 390 Special they grooved them.
Or maybe it was the mains.

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Jul 21, 2002 | 08:36 AM

Amule

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390 intercepter

Main journal is grooved.I've got one in the shop.I've wondered if
if this couldn't be done to a standard 390 crank,and if it
would be worth the trouble.