B-Body 4spd Conversion how hard?
#229617
02/19/09 09:42 AM
02/19/09 09:42 AM
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Joined: Nov 2007
Posts: 505 Northampton Pa
65 NSS 500
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mopar
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mopar
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Posts: 505
Northampton Pa
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Hello Im looking for thoughts on how hard it would be to convert a 65 Coronet to a 4spd car. I really want to row the gears and dont race that often so I was considering going with a 4sp rather than upgrade my Auto/conv for my new motor. I will be running a 340 12.1 comp 680 roller cam etc. I fiqured to put my money toward the conversion rather than upgrading my Auto. If I go with Buying a package "Everything needed from Brewers Perfomance" Rather than try to hunt it down piece by piece the install should not be to bad? Just change out everything and weld in hump. Anyone ever do this and also how is brewers performance? any other thoughts, warnings or recomendations appreciated. I am going to run the 340 for 2-3 years and then want to upgrade to BB . let me know your thought s
1965 Coronet 500
340 40+ Passon 4sp
12.90 2.6 60' street tires
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Re: B-Body 4spd Conversion how hard?
[Re: 65 NSS 500]
#229620
02/19/09 12:15 PM
02/19/09 12:15 PM
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Joined: Dec 2006
Posts: 554 Florida
65HemiCoronet
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mopar
Joined: Dec 2006
Posts: 554
Florida
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I did that exact change in my 65 Coronet, but I went from a 318 Poly auto, to a 528 hemi 4 speed. It is a fairly easy swap actually. My circumstances were a lot different, as I had to use a later K member pushing the motor back over an inch. Had to fabricate a custom trans cross member, and massage the torsion bar cross member for shifter clearance. I bought a fiberglass trans hump from Brewers at Carlisle and it worked out great. All you really need are the b body clutch pedal assy, the clutch Z bar and brackets and clutch linkage. The rest is fairly easy to come by....bellhousing, flywheel, clutch assy, shift linkage, etc. I'm not sure if the auto trans cross member will work on the standard 4 speed install. I think buying it from Brewers or such will be convenient, but will most certainly cost more than scrounging parts up. Depends on your time line I guess.
Yeah, it's got a hemi........a REAL hemi.
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Re: B-Body 4spd Conversion how hard?
[Re: mike67net]
#229623
02/19/09 01:38 PM
02/19/09 01:38 PM
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Joined: Nov 2007
Posts: 505 Northampton Pa
65 NSS 500
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Thanks, I agree on the scattershield. Now I have a small block K frame I shouldnt have to change anything there should I?
1965 Coronet 500
340 40+ Passon 4sp
12.90 2.6 60' street tires
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Re: B-Body 4spd Conversion how hard?
[Re: 65 NSS 500]
#229624
02/19/09 03:32 PM
02/19/09 03:32 PM
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Joined: Dec 2006
Posts: 554 Florida
65HemiCoronet
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mopar
Joined: Dec 2006
Posts: 554
Florida
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Your K frame should be fine, the only question again is the automatic trans cross member and the 4 speed. You may have to hunt down a 4 speed cross member or get one from Brewers. On second thought.......what motor came out of it? If you are going with a 340, and had a standard 318 poly, the mounts may not be the same. Maybe a call to Schumacher motor mounts should be in order. Quote:
Thanks, I agree on the scattershield. Now I have a small block K frame I shouldnt have to change anything there should I?
Last edited by 65HemiCoronet; 02/19/09 03:35 PM.
Yeah, it's got a hemi........a REAL hemi.
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Re: B-Body 4spd Conversion how hard?
[Re: 65HemiCoronet]
#229625
02/19/09 03:42 PM
02/19/09 03:42 PM
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Joined: Nov 2007
Posts: 505 Northampton Pa
65 NSS 500
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mopar
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From what I can tell it was a 273 2V car. The 340 is bolted in now without anything special. One problem I did have was when I repalced one motor mount the drivers side. The one I got from Autozone was a little different than the one that came out like a 1/4 inch and I had problems getting it to line up. The pin thats goes into the frame dont line up. Not sure why?
1965 Coronet 500
340 40+ Passon 4sp
12.90 2.6 60' street tires
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Re: B-Body 4spd Conversion how hard?
[Re: 65 NSS 500]
#229626
02/19/09 04:20 PM
02/19/09 04:20 PM
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Joined: Dec 2004
Posts: 10,637 Rittman Ohio
fourgearsavoy
I Live Here
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I Live Here
Joined: Dec 2004
Posts: 10,637
Rittman Ohio
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There is a nice looking smallblock Lakewood can in the swap meet section.It's in the trans/differential section.B-body 23 spline boxes are pretty easy to obtain.The pedals and Z-bar may be your only challange to locate.I like to deal with Jamie over at Passon performance for all my 4-speed needs.He is also in PA so you might save some shipping by driving to his place. Gus
64 Plymouth Savoy 493 Indy EZ's by Nick at Compu-Flow 5-Speed Richmond faceplate Liberty box Dana 60
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Re: B-Body 4spd Conversion how hard?
[Re: 65HemiCoronet]
#229627
02/19/09 08:09 PM
02/19/09 08:09 PM
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Joined: Feb 2003
Posts: 21,318 Manitoba, Canada
DaytonaTurbo
Too Many Posts
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Too Many Posts
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
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Quote:
I bought a fiberglass trans hump from Brewers at Carlisle and it worked out great.
Out of curiousity, why would one want a fiberglass hump over a metal hump that you can weld in?
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Re: B-Body 4spd Conversion how hard?
[Re: DaytonaTurbo]
#229628
02/19/09 08:59 PM
02/19/09 08:59 PM
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Joined: Nov 2007
Posts: 505 Northampton Pa
65 NSS 500
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I would use the metal one but I looked on Brewers and they dont sell the fiberglass one anymore.I saw the scattershield but I dont know if it will work for me because it has some modification for a truck done to it.
1965 Coronet 500
340 40+ Passon 4sp
12.90 2.6 60' street tires
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Re: B-Body 4spd Conversion how hard?
[Re: 65 NSS 500]
#229629
02/19/09 09:38 PM
02/19/09 09:38 PM
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Joined: Nov 2007
Posts: 505 Northampton Pa
65 NSS 500
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mopar
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OP
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Posts: 505
Northampton Pa
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One concern I am not sure of , My car does not have the trunion style drive shaft It was conerted to a 727 without that. Can I put in a non 65 trans from a 66-70 B body so I can use the same drive shaft. Do I look for an 18 or 23 spline trans and also from what body should I look for.
1965 Coronet 500
340 40+ Passon 4sp
12.90 2.6 60' street tires
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Re: B-Body 4spd Conversion how hard?
[Re: 65 NSS 500]
#229631
02/19/09 10:10 PM
02/19/09 10:10 PM
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Joined: Dec 2004
Posts: 10,637 Rittman Ohio
fourgearsavoy
I Live Here
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I Live Here
Joined: Dec 2004
Posts: 10,637
Rittman Ohio
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I would use a later model non B&T unit and I think a 23 spline unit will hold up in your application with a small block.Now if you intend to keep the four speed behind a big block I would recommend the 18 spline unit and be done with it.I know where you can get a fresh rebuilt B-body 18 spline unit ready to rock. Gus
64 Plymouth Savoy 493 Indy EZ's by Nick at Compu-Flow 5-Speed Richmond faceplate Liberty box Dana 60
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Re: B-Body 4spd Conversion how hard?
[Re: larry890]
#229632
02/19/09 10:12 PM
02/19/09 10:12 PM
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Joined: Mar 2008
Posts: 768 Ohio
Dan Brewer
super stock
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super stock
Joined: Mar 2008
Posts: 768
Ohio
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Quote:
I have a complete 4 spd pedal assembly with a z bar out if a 68 b-body if your interested pm me.
Will not work in a 65 car
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Re: B-Body 4spd Conversion how hard?
[Re: 65HemiCoronet]
#229634
02/19/09 11:06 PM
02/19/09 11:06 PM
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Joined: Feb 2003
Posts: 21,318 Manitoba, Canada
DaytonaTurbo
Too Many Posts
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Too Many Posts
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
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Quote:
Quote:
Quote:
I bought a fiberglass trans hump from Brewers at Carlisle and it worked out great.
Out of curiousity, why would one want a fiberglass hump over a metal hump that you can weld in?
Saving $$ is why. Glass was half the cost of the steel one. The hump serves no structural service to the body. It just allows clearance for the shifter and linkage. I have mine screwed in with sheet metal screws, and it's easy to remove for easy access to shifter and linkage.
Really, I would have thought having a continuous floor on a unibody would only serve to help with overall structural integrity. But I agree, for the stamped piece of steel you get, those tunnels are not the cheapest thing out there.
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