1968 330 engine

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Aug 12, 2018 | 07:08 PM

Twinibeam1

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1968 330 engine

Hello everybody
I have came across a 330 block low miles in great condition, can this be bored out to make a 390 or is that to much, Has anybody done this ?
Thank you
Jerry

Aug 13, 2018 | 08:10 PM

RangerMercMan

Fleet Mechanic

Joined: Aug 2016

Posts: 1,480

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From: Great White North

The 330 is an FT series engine. I do not know how many parts interchange with the FE series. The basic (ha ha) equation for calculating engine size is BxBxSxNx0.7854 where B=Bore; S=Stroke; N=number of cylinders; and 0.7854 is a magic number. I do not know the bore and stroke of a 330 off the top of my head but when you get the bore size try adding 0.060 to it for 60 thou over which for a lot of engines is wow wee max. I am not aware of any Big 3 engines off the top of my head that 60 over buys you 60 cubic inches.

Aug 13, 2018 | 08:17 PM

ford390gashog

Fleet Owner

Joined: Jan 2004

Posts: 26,007

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From: Brentwood,CA

Most of the 330 engines can take the 4.05 bore. However they were not siamese and core shift is a real problem. So make sure the block is checked. The blocks are very strong also worth using is the oil pan.

Aug 13, 2018 | 08:26 PM