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07-09-2007, 01:09 PM
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#1 |
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Registered User
Join Date: Jul 2007
Location: Covina Calif
Posts: 172
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3 speed trans
HHHEEELLLPPP i want to convert my 70 C10 SWB to a Turbo 350 and wanted to know if i need a new cross member or can i use the one from the 3 speed trans any help.
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07-09-2007, 01:14 PM
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#2 |
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Senior Member
 
Join Date: Dec 2006
Location: Studio City, Calif.
Posts: 2,883
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Re: 3 speed trans
I think you need one,at least I did for changing from 4spd to 350. I never did the switch so if you want to swing by I'll give it to you. -(in Studio City)
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'69 GMC C2500 Custom Camper, 8 1/2' bed, New GM 350, NP 435 Close Ratio 4spd. Trans., 3.73 Dana-60 open.Camper and Trailer wiring, PS, PB, AC, tach , three gas tanks, stereo speakers, 2nd owner, Work-Truck supreme. |
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07-09-2007, 01:44 PM
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#3 |
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Junior Member
Join Date: May 2007
Location: Fort Worth, TX
Posts: 47
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Re: 3 speed trans
I had only a bellhousing crossmember from my 3 speed. If yours is the same, I'd say you definitely need a new crossmember for a TH350.
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72 C10 Long Bed, Vortec 350, Muncie M20, 3.73 Posi 79 Camaro, Vortec 350, Muncie M21, 3.90 Posi 07 BMW 328i, Wife's |
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07-09-2007, 03:10 PM
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#4 |
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Questionable
Join Date: Mar 2005
Location: Atlanta
Posts: 13,373
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Re: 3 speed trans
my 3spd used a totally different crossmember, and it was in a completely different location. 3spd is farther forward and has two mounting points, offset from center (one on the left, one on the right). auto mounts in the very middle of the crossmember, and about a foot farther back.
__________________
If I've got anything up for grabs, it'll be here: 7-hole gauge cluster for a 67-72 p/u FREE (link) I can't check the forum daily. If I don't reply to you within 24 hours, drop me a PM! I'm (hopefully) still alive and will reply faster to a PM. |
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07-09-2007, 03:19 PM
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#5 |
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never finish start another
Join Date: Mar 2007
Location: North Platte Nebraska
Posts: 432
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Re: 3 speed trans
there's one on e-bay #290136559378. looks like everthing you need for a complete conversion. If nothing else, look at the picture!
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07-09-2007, 03:32 PM
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#6 |
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Questionable
Join Date: Mar 2005
Location: Atlanta
Posts: 13,373
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Re: 3 speed trans
compare that with the 3spd crossmember:
http://satellitehead.com/images/68ch...%20%282%29.jpg here is the auto crossmember: http://satellitehead.com/gallery/dis...207&fullsize=1
__________________
If I've got anything up for grabs, it'll be here: 7-hole gauge cluster for a 67-72 p/u FREE (link) I can't check the forum daily. If I don't reply to you within 24 hours, drop me a PM! I'm (hopefully) still alive and will reply faster to a PM. |
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