C4 ?? C6 ?? for 6 cyl to V8 swap
hj...@earthlink.net
decided on all the upgrades/conversion parts except for the trans. I
was going to go with a C4, but then someone told me a C6 would be
better. Then, someone else told me the C6 can only be used for a big
block (i putting in a 302). Then, another person told me a C6 can be
used, just make sure I use a SB bellhousing.
Can anyone clear this up for me? I am new to Fords but have been
building Mopars for years so I have technical knowledge, just not the
brands specifics.
Also,
would the crossmember be the same?
do the trannies (C4 or C6) differ year to year? If so, which
years are good ones?
do the bellhousings differ year to year ? (For example: if I
use a 68 302 do I have to use a specific year trans or bellhousing?)
Any help would be GREATLY appreciated. You can post a reply or e-mail
me at hj...@earthlink.net
Thanks
Craig Keto
then the earlier ones. No 302 you can build will hurt a properly built
C-4, and they are cheap to build. A C-6 would just rob power cause it takes
more to turn the sucker. If I am correctly half guessing, your car may have
a C-4 in it, as I think they put C-4's behind some 6 cylinders, I know they
did with the 300 inline at least.. There was also a lousy C-3 behind other
6's, but I am not sure when it debuted. small block bellhousings are all
the same, no problem there. That's about all I can tell you, someone else
can fill in the rest.
hj...@earthlink.net wrote in message
<3773cf5c...@news.earthlink.net>...
Dan W
> C4 ?? C6 ?? for 6 cyl to V8 swap
>I am in th eprocess of converting a 66 6
>cyl into a V8 car. I have decided on all
>the upgrades/conversion parts except for
>the trans. I was going to go with a C4,
>but then someone told me a C6 would be
>better.
A C-6 is stronger but it weighs more than a C-4 and unless you plan on
making major horsepower (over say 600) theres no need for a C-6
> Then, someone else told me the
>C6 can only be used for a big block
>(putting in a 302). Then, another person
>told me a C6 can be used, just make
>sure I use a SB bellhousing.
Ford did make a small block C-6 but the bellhousings on C-6's don't
separate from the tranny like a C-4 does
> Can anyone clear this up for me? I am
>new to Fords but have been building
>Mopars for years so I have technical
>knowledge, just not the brands specifics.
>Also,
> would the crossmember be the same? Yes I believe they would be
the same
> do the trannies (C4 or C6)
>differ year to year? If so, which years are
>good ones? do the
>bellhousings differ year to year ? (For
>example: if I use a 68 302 do I have to
>use a specific year trans or bellhousing?)
As far as the year to year differance I'm not sure other than input
shaft spline count on C-4's 24 or 26 spline.
You should use a C-4 with a medium sized bellhousing 10 1/2 in diameter
flywheel. I think that is what came in those cars. The bigger
bellhousing would limit room for headers in the small chassis.
Bill S did I miss anything?
Dan
90LX 408W C-4
making 530 hp@5800
and 519 ft lbs @4800 at the flywheel
should run high 10's on the motor
http://home.mho.net/mhanna/ramfm/dan/dan.html (this is the old setup)
remove _nospam to email
Steve Finkelstein
The bellhousing of on a C6 and C4 transmissions are not removable. They
are cast as part of the tranmission case. C6 automatic transmissions were
mainly used behind 390 and 428 engines. It was never intended to be used
behind a small block V-8. You would be off with a C4 transmission. Check
with a 66 Mustang shop manual you might find that the transmisson might
have been an MX which was an early ford three speed automatic
transmission. You might also want to check with the Mustang speciallity
magazines for more information.
The C4 can be beefed up by changing the number of clutch packs used for
low/reverse and high gears and also a shift kit. You might also want
check the bolt pattern of the bellhousing on the small block because they
might be different. A Mustang Shop Manual should be helpful in this case.
Also a good source of parts compatiblity could be at you locate Ford part
department. They might still have some of the parts catologs from that
time available.
Steve
hj...@earthlink.net wrote:
> I am in th eprocess of converting a 66 6 cyl into a V8 car. I have
> decided on all the upgrades/conversion parts except for the trans. I
> was going to go with a C4, but then someone told me a C6 would be
> better. Then, someone else told me the C6 can only be used for a big
> block (i putting in a 302). Then, another person told me a C6 can be
> used, just make sure I use a SB bellhousing.
>
> Can anyone clear this up for me? I am new to Fords but have been
> building Mopars for years so I have technical knowledge, just not the
> brands specifics.
>
> Also,
> would the crossmember be the same?
> do the trannies (C4 or C6) differ year to year? If so, which
> years are good ones?
> do the bellhousings differ year to year ? (For example: if I
> use a 68 302 do I have to use a specific year trans or bellhousing?)
>
Whole Lotta Tom
behind the 351C CJ, a smallblock engine, and behind 351C 2V low deck blocks
in some towing/station wagon applications. But, yes, there is no need to
use a C6 behind a stock/mild performance smallblock, especially today with
all the great C4 parts available.
--
To reply, remove the obvious.
tomcr...@poboxnospam.com
Steve Finkelstein <byt...@hotmail.com> wrote in message
news:37767D30...@hotmail.com...
CobraJet
<byt...@hotmail.com> wrote:
> Hi,
>
> The bellhousing of on a C6 and C4 transmissions are not removable. They
> are cast as part of the tranmission case. C6 automatic transmissions were
> mainly used behind 390 and 428 engines. It was never intended to be used
> behind a small block V-8. You would be off with a C4 transmission. Check
> with a 66 Mustang shop manual you might find that the transmisson might
> have been an MX which was an early ford three speed automatic
> transmission. You might also want to check with the Mustang speciallity
> magazines for more information.
You might spend some time on research yourself. Let's nip some of this
nonsense in the bud before it gets around.
The bell housing on C4's ARE removeable. Any article on rebuilds or the
factory sevice manual will show you that. C6's have theirs cast with the
main body, and come in three styles: FE big block,429-460/351M-400M, and
SMALL BLOCK (289-302-351W-351C). MX transmissions debuted in the 1969 cars
behind 351's, and are a medium-duty design descendant of the Ford
Cruise-0-Matic. The only V8 automatic in a '66 Mustang would be a C4 (which
came out for '64, which would be C4 in Ford parts language. Care to guess
when the C6 came out?).
The C6's factory use behind small blocks started in 1971 behind both
styles of 351's. This came about because the FMX was not cutting it in the
longevity department. They are most commonly found behind 70's Windsors in
trucks and vans, as well as 351 HO and CJ cars. It is true that they are an
overkill behind all but the nastiest 289-302 engines.
>
> The C4 can be beefed up by changing the number of clutch packs used for
> low/reverse and high gears and also a shift kit. You might also want
> check the bolt pattern of the bellhousing on the small block because they
> might be different.
To be more precise, pre-'66 small blocks had 5-bolt housings. '66 and
later had 6-bolt housings.
A Mustang Shop Manual should be helpful in this case.
> Also a good source of parts compatiblity could be at you locate Ford part
> department. They might still have some of the parts catologs from that
> time available.
Better yet would be anyone that has been in the transmission biz for a
while, as they have no doubt done hundreds or thousands of them.
CobraJet
>
> Steve
>
> hj...@earthlink.net wrote:
>
> > I am in th eprocess of converting a 66 6 cyl into a V8 car. I have
> > decided on all the upgrades/conversion parts except for the trans. I
> > was going to go with a C4, but then someone told me a C6 would be
> > better. Then, someone else told me the C6 can only be used for a big
> > block (i putting in a 302). Then, another person told me a C6 can be
> > used, just make sure I use a SB bellhousing.
> >
> > Can anyone clear this up for me? I am new to Fords but have been
> > building Mopars for years so I have technical knowledge, just not the
> > brands specifics.
> >
> > Also,
> > would the crossmember be the same?
> > do the trannies (C4 or C6) differ year to year? If so, which
> > years are good ones?
> > do the bellhousings differ year to year ? (For example: if I
> > use a 68 302 do I have to use a specific year trans or bellhousing?)
> >
> > Any help would be GREATLY appreciated. You can post a reply or e-mail
> > me at hj...@earthlink.net
> >
> > Thanks
..
CobraJet
<c4t...@sprynet.com> wrote:
> CobraJet <two...@blacktop.com> wrote:
>
> > You might spend some time on research yourself. Let's nip some of this
> > nonsense in the bud before it gets around.
> > The bell housing on C4's ARE removeable. Any article on rebuilds or
> the
> > factory sevice manual will show you that. C6's have theirs cast with the
> > main body, and come in three styles: FE big block,429-460/351M-400M, and
> > SMALL BLOCK (289-302-351W-351C). MX transmissions debuted in the 1969
> cars
> > behind 351's, and are a medium-duty design descendant of the Ford
> > Cruise-0-Matic. The only V8 automatic in a '66 Mustang would be a C4
> (which
> > came out for '64, which would be C4 in Ford parts language. Care to guess
> > when the C6 came out?).
>
> Speaking of C4's......I have my stock '79 C4 (with a shift kit
and 10inch
> convertor) matched up to an '86 302. If I plan to upgrade to a 351W, what
> bellhousing(s) will work? Thanks.
The two bellhousing patterns are the same. Your welcome.
CobraJet
> --
> Brian
> '79 Mustang 5.0L
> 13...@101.7mph 1.85 60 foot.
> (new best 60 foot of 1.83...updated et and mph to come)
>
> mr...@hotmail.com
> http://home.sprynet.com/~c4trans
..
CobraJet
two...@blacktop.com (CobraJet) wrote:
>
> The two bellhousing patterns are the same. Your welcome.
Oh shit I misspelled "You're". No soup for me.
>
> CobraJet
>
> > --
> > Brian
> > '79 Mustang 5.0L
> > 13...@101.7mph 1.85 60 foot.
> > (new best 60 foot of 1.83...updated et and mph to come)
> >
> > mr...@hotmail.com
> > http://home.sprynet.com/~c4trans
> ..
..
c4t...@sprynet.com
CobraJet <two...@blacktop.com> wrote:
> You might spend some time on research yourself. Let's nip some of this
> nonsense in the bud before it gets around.
> The bell housing on C4's ARE removeable. Any article on rebuilds or
the
> factory sevice manual will show you that. C6's have theirs cast with the
> main body, and come in three styles: FE big block,429-460/351M-400M, and
> SMALL BLOCK (289-302-351W-351C). MX transmissions debuted in the 1969
cars
> behind 351's, and are a medium-duty design descendant of the Ford
> Cruise-0-Matic. The only V8 automatic in a '66 Mustang would be a C4
(which
> came out for '64, which would be C4 in Ford parts language. Care to guess
> when the C6 came out?).
Speaking of C4's......I have my stock '79 C4 (with a shift kit and 10inch
convertor) matched up to an '86 302. If I plan to upgrade to a 351W, what
bellhousing(s) will work? Thanks.