engine swap

289 - 351 cid Small Block Performance
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smithhe
Posts: 148
Joined: Mon Jun 18, 2018 2:22 pm
Location: Southern Maryland

engine swap

Post by smithhe »

I am swapping a 1995ish 302 built to a 347 that I recently bought from a friend in my 1964 comet, I am wondering if I will have to change the motor mounts and will my stock 3 speed automatic bolt up to the engine, I plan on buying a tremec TKO 600 soon but I just want to bolt it up to the stock trans for the time being to drive it here and there.
1964 Mercury Comet 404 with 347 stroker
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A/FX
Comet Central Member
Posts: 1103
Joined: Tue Jan 06, 2004 8:07 pm
Location: S.E. Wisconsin

Re: engine swap

Post by A/FX »

If your Comet was a V8 car the engine will bolt in, the factory ‘64 transmission is a 5 bolt pattern and will not fit the 302. (or any post ‘64 289)
If you have a 6cyl. car the steering and brakes are marginal at best for a V8 swap. (Not recommend)
Jim
‘64 Cyclone/ Boss 302,quads,4spd, Winters 9”

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smithhe
Posts: 148
Joined: Mon Jun 18, 2018 2:22 pm
Location: Southern Maryland

Re: engine swap

Post by smithhe »

A/FX wrote:If your Comet was a V8 car the engine will bolt in, the factory ‘64 transmission is a 5 bolt pattern and will not fit the 302. (or any post ‘64 289)
If you have a 6cyl. car the steering and brakes are marginal at best for a V8 swap. (Not recommend)
Jim
so the engine will bolt up to it? my car is a v8 car
1964 Mercury Comet 404 with 347 stroker
Image

A/FX
Comet Central Member
Posts: 1103
Joined: Tue Jan 06, 2004 8:07 pm
Location: S.E. Wisconsin

Re: engine swap

Post by A/FX »

smithhe wrote:
A/FX wrote:If your Comet was a V8 car the engine will bolt in, the factory ‘64 transmission is a 5 bolt pattern and will not fit the 302. (or any post ‘64 289)
If you have a 6cyl. car the steering and brakes are marginal at best for a V8 swap. (Not recommend)
Jim
so the engine will bolt up to it? my car is a v8 car
Yes, the engine mounting is the same for pre ‘65 and post ‘65 small blocks. The transmission bolt pattern is different on post ‘64 engines. If you install a 302 you will need a six bolt bell housing or automatic with a 6bolt pattern.
Stock exhaust manifolds should work. You will no doubt change the generator to an alternator.
Jim
‘64 Cyclone/ Boss 302,quads,4spd, Winters 9”

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smithhe
Posts: 148
Joined: Mon Jun 18, 2018 2:22 pm
Location: Southern Maryland

Re: engine swap

Post by smithhe »

are there companies that make a bell housing that will mate with my transmission to make it a 6 bolt?
1964 Mercury Comet 404 with 347 stroker
Image

A/FX
Comet Central Member
Posts: 1103
Joined: Tue Jan 06, 2004 8:07 pm
Location: S.E. Wisconsin

Re: engine swap

Post by A/FX »

smithhe wrote:are there companies that make a bell housing that will mate with my transmission to make it a 6 bolt?
No,
Your C4 is for an early small block. If you want an automatic you need to source a post 64 six bolt bell housing C4.
A stock C4 may not stand up to abuse of a 347 so keep your foot off the floor.
‘64 Cyclone/ Boss 302,quads,4spd, Winters 9”

Image

smithhe
Posts: 148
Joined: Mon Jun 18, 2018 2:22 pm
Location: Southern Maryland

Re: engine swap

Post by smithhe »

A/FX wrote:
smithhe wrote:are there companies that make a bell housing that will mate with my transmission to make it a 6 bolt?
No,
Your C4 is for an early small block. If you want an automatic you need to source a post 64 six bolt bell housing C4.
A stock C4 may not stand up to abuse of a 347 so keep your foot off the floor.
im probably just gonna bite the bullet and buy the tremec, thank you for the help though
1964 Mercury Comet 404 with 347 stroker
Image

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