I just picked up a '65 Mercury Comet. It has a six banger, but I would
like to replace it with a high performance engine. I don't know much
about Ford products. Wich engine is most suited for this car? I would
like to use something that is popular and parts are plentiful. Should
I get a 289, 351C ,351W ,390 or what? Also need help with tranny (4
speed manual). Wich would bolt up best to these engines. Any
constructive help is greatly appreciated.
the 65 comet used the same engine, transmission and rear end as the
mustang that came with the 6 cyl. engines.. i have see some mustangs
with the 140 cu.in engine and others with the 200 cu. in engines, both
were 6 cyl.. so if you get a v-8 from an early ford, mustang probably
go and get the 4 speed trans, and the drive shaft and rear end to go
along with it...
I'd put a 351 WINDSOR and C-4 automatic in it. I did the same conversion on
my 64 Mustang (was a 260 c-4) A Cleveland is too wide as are the other V-
8's. Look hard in the bone yards for a 67 Mustang and up 9inch rear end.
The front suspension will need to be upgraded, use Monarch/Granada or
Comet/Maverick disk brake set-up. If the 351 is too small, you can bore and
stroke it to 421 cubes with a 400 modified crank and small block chevy rods
but now were talking more money. A late model Mustang has the wrong oilpan
for your chassis. If your heart is set on a manual trans, you'll have to
fab up most of the linkage and find a top loader for a small block (and
it'll have to be for a comet/falcon/fairlane due to the shifter location. A
Muastang's shifter is to far back on the trans) The windsor bell housing
uses, I think, an 163 tooth flywheel compared to a 157 for the 289/302 so
it's a tad bigger. There's some info for ya
I think a 289 would be just right. A 302 could work. I'd stick with
the engine block that was actually sold in that car. It makes things
soooooooo much easier when you can find junkyard comets that used the
same engine. makes it easy to find mounts, brackets, etc...
I'd bet the vast majority of comets ran 6 bangers though...I think the
200 was about standard fare in 65. There may not be a whole lot of
junked comets with V8's. But at least you can probably order the
parts. Like one said, many mustang parts will work. Same for falcons.
They all used about the same basic chassis.
If it were me, I'd plonk a 289 in it if I wanted a V8. It might be
best to buy a beater 289/302 and rebuild it. That way you have all the
pans, parts, etc...
There are many things to consider all the way down to the number of
teeth on starters/flywheels. "auto vs manual" I would not rush into
it without a lot of planning. Talk to a bunch of "old fart" junkyard
owners. They are pretty savvy on what will fit, and what won't. When
my 300 six in my truck went kaput, I just went with another rebuilt
300 just to avoid the PIA of having to hunt all the parts down to swap
to a V8. I don't really mind a six too much. Sure saved a lot of
aggravation doing a swap..:/ I didn't really want to keep the truck
out of action very long. MK
I would have to agree with MK,
and stick with what was in the vehicle or at the very least, got to a
302. They are a solid engine and the parts are easy and relatively
easy to get. They also have tons of options as to how to "hot-rod"
them. I think Jegs is a good place to start for looking for high
performance parts. As far as the tranny, what I would suggest is that
you get the engine and tranny as a complete assembly, both from the
same vehicle out of a junk yard -- and yes get the ECM for it also.
This would be my suggestion as a Ford mechanic with about 20 years of
working on Fords.
On 10 Aug 2003 02:04:23 -0700, email@example.com (Mark Keith) wrote:
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