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Author
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Topic: engine swap
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rex
Journeyman Posts: 12
From: Los Angeles, Ca, USA
Registered: Nov 2001
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posted 12-13-2001 08:17 AM
   
I am installing a rebuilt 351c in my
77 ranchero, which had a 351m eingine.
I have all the brakets for the cleveland
and motor mounts, does anyone see any
problem with the c4 bellhousing or the
torque converter from the (m) motor being
used in the new setup?
Seems I'm having a little trouble
getting the bellhousing to bolt up on
the driver side bolts as the two top
and two passanger side bolts tighten up.
Also is the starter the same for both
motors, I checked at the local parts store
and they show the same parts number
the cleveland is a 71, the mod is a 77.
thanks
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clevelandstyle
Gearhead Posts: 113
From: Connersville, IN
Registered: Jul 2001
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posted 12-13-2001 12:53 PM
The trans WILL NOT bolt up. The M trans is a big block bolt pattern and the C is a small block bolt pattern. You need a small block trans.
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SteveLaRiviere
Administrator Posts: 18560
From: Saco, Maine MCA # 47773
Registered: May 99
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posted 12-13-2001 05:46 PM
You're ok with the starter, but clevelandstyle is right about the bellhousing.------------------
'70 Mustang Mach 1 M code 351C 4V/FMX/3.25 open
'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Lok
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
'97 Probe GTS 2.5L DOHC Christmas shopping? Why not use the
M&M Bookstore?
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rex
Journeyman Posts: 12
From: Los Angeles, Ca, USA
Registered: Nov 2001
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posted 12-13-2001 07:23 PM
thanks guys, I already solved that
problem with a small block bolt pattern
bellhousing. My 351m cam with a c4 with
the large bolt bellhousing..
wonder why i'm having such a hard time
getting the block and bellhousing to
meet... oh well I'll be on it in the
morning...
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Just Strokin
Journeyman Posts: 35
From: Tuscaloosa, Alabama
Registered: Dec 2001
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posted 12-21-2001 01:41 PM
You may need a starter for the cleveland also. Some of the 351m/400 has a hole in the starter that is threaded. The small block starter doesn't.Make sure the convertor is fully seated in the pump and the convertor studs & the TC DRAIN PLUG are aligned. You may have the wrong flex plate/convertor combo. That is the diameter of the converter studs are not the same diameter of the felxplate holes. just my 2 cents is all....do i get any change?...lol [This message has been edited by Just Strokin (edited 12-21-2001).]
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SteveLaRiviere
Administrator Posts: 18560
From: Saco, Maine MCA # 47773
Registered: May 99
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posted 12-21-2001 06:59 PM
quote:
Originally posted by rex:
thanks guys, I already solved that
problem with a small block bolt pattern
bellhousing. My 351m cam with a c4 with
the large bolt bellhousing..
wonder why i'm having such a hard time
getting the block and bellhousing to
meet... oh well I'll be on it in the
morning...
Did you feel three clicks when you spun the torque convertor on the front pump? That's the usual reason the block and bellhousing don't mate. The convertor must engage with three different things as it mounts. You need to spin it and hear three clicks as you push it in. Be careful, if it's wrong and you start the engine you'll probably ruin your tranny's front pump. ------------------
'70 Mustang Mach 1 M code 351C 4V/FMX/3.25 open
'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Lok
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
'97 Probe GTS 2.5L DOHC
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rex
Journeyman Posts: 12
From: Los Angeles, Ca, USA
Registered: Nov 2001
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posted 12-22-2001 08:37 AM
Thanks guys, here are some things I found
out.
I have the motor, trans bolted together.
the starter needs to be for a cleveland
because the bolt pattern on the c6 use
one bolt in the bellhousing and one bolt
into the starter, where the c4 both bolt
to the bellhousing.
Yes you need either headers or the
exhaust manifold off the Cleveland if
you don't want to spend $150 + for a small
starter. I picked up a pair of Cleveland
manifolds at the junk yard yesterday, although the passanger side one has a gaping
hole in it. Will have it welded today
should have the motor turning over today.Lesson learned, A (m) and (C) motors
are too different to think that you swap
parts, and have an easy time of getting
everything to work.
Although it has been some fun. I rediscoved a whole vocabulary that I had
forgotten......
Thanks all
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