[DeTomaso] Stroker engine

[Daniel C Jones]

> A question for Dan:
> In one of the how-to-build stroker-Fords publications (which I can't find
> right now), I noticed a reference to a Federal-Mogul adapter main bearing set
> that supposedly fit the Windsor block journals but was made thicker to take
> the smaller Cleveland crank journals- essentially duplicating some of the SVO
> blocks with a cheap junkyard Windsor. I can't find any p/n for such a
> bearing in Federal-Mogul catalogues and since F-M were sold, their web site
> is useless, with no contact address. Ever run into such a bearing set? Seems
> like this would make building a budget stroker-Windsor a little simpler, if
> it existed.

It exists and is available through FRPP as the "Sportsman 351 Short Track
Bearing and Spacer Kit" p/n M-6339-A351.  The main bearing spacer kit allows
OEM 351W blocks with 3" diameter mains to use 2.75" diameter cranks (351C
and aftermarket).  The installation instructions state the spacers are to
be used with companion main bearings M-6333-A351 which have a 351W thrust
width and a 2.75" diameter  That set-up has the thrust flange width to
fit the Sportsman crank (M-6303-E351).  For race cranks, the Federal Mogul
spacer kit p/n 147MSEMI should be used.  The Federal Mogual kit has 0.15"
less thrust flange width consistent with 351C bearings.  Either kit must be
align bored and plateau honed (Ra 16mu In) to 0.2.9417"/2.9425".   BTW, the
bearings do not have locating tangs and the spacers do not have tang slots.
The bearings are located longitudinally by eye and held in place by the
crush of bearing cap/main saddle fit.

Dan Jones