manual to auto swap problem???????? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Jetmech727 · 02-24-2009, 12:24 AM

Doing a manual to auto swap. Bolted everything together and i'm coming up an 1" short on the trans crossmember with the c/m bolted to frame (nothing is tight at this point bolts in place). Everything needs to go fwd about and 1". I have loosened all motor mounts and slid everything fwd as far as i could and still can not get the trans to mate to the crossmember. Any Ideas?? Thanks in advance

67ChevyRedneck · 02-24-2009, 12:50 AM

What transmission are you using?

I used a 700R and had to redrill the holes for the mounts. I think I was able to use the back holes for the front of the crossmember and had to drill the back holes.

Jetmech727 · 02-24-2009, 01:09 AM

350 trans

67ChevyRedneck · 02-24-2009, 02:01 AM

V8, I-6? If V-8, is the V-8 in the correct V-8 location or is it in the I-6 location?

Jetmech727 · 02-24-2009, 06:26 AM

the truck started life as a big block. Then went to small block. It has never had a I-6. Thanks for the reply

70GMCer · 02-24-2009, 08:35 AM

What length tail shaft is on the 350. You may have the longer one & you need the 6" one to align with the xmember to fit in the stock location. If you have the longer shaft, you will have to redrill for the xmember to fit.

Also, does your driveshaft fit?

my67chevytruck · 02-24-2009, 08:45 AM

ANy pics to share? Are you sliding the slip yoke as far in the tranny as possible, then trying to connect to the rear end? I believe 67redneck was asking what position you have the motor mounted in. some ppl mount a sbc in the I-6 position.

Pics will help 100 Fold....

Jetmech727 · 02-24-2009, 02:39 PM

Ok I'm down to a 1/2" to 3/4" shy. Take a look at the pics and see if you can find any think that looks incorrect. If evething looks good I'm going to start walking holes. Thanks

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my67chevytruck · 02-24-2009, 04:09 PM

hmm. wondering if those are BB motor mounts. my SBC dont curve like that. it looks in the forward position to me. I have attached some pics for you.

Jetmech727 · 02-24-2009, 04:30 PM

I'm pretty sure that thay are bb mounts. I did not know there was a difference. What do I need to change just the mount on the frame or eng mount as well?

Longhorn Man · 02-24-2009, 04:49 PM

Been a long time since I've had 68 - 71 BBC engine stands... but are his on the wrong side... left for right? That'll move the engine forward a bit if I remember correctly.

my67chevytruck · 02-24-2009, 09:50 PM

Bttt. lets help Jet out. will switching to swb frame towers move the engine forward enough. could the bbc frame towers be reversed as longhorn mentioned.

my67chevytruck · 02-25-2009, 08:50 AM

You may want to try switching the mounts from left to right to see if that gives you the 3/4 you need. That would be a little cheaper , and you could reuse your current bbc mounts.

Jetmech727 · 02-25-2009, 09:50 PM

Got small block mm coming from memeber pumpgas. I'll try that this weekend. Anybody need bb mounts?

spinning wheels · 02-25-2009, 11:09 PM

BB mounts? sure.

What did you do with the stick tranny? ( I ain't talkin about the skinny dude dressed like a woman).

Was it a 4 speed?

my67chevytruck · 02-26-2009, 09:50 AM

Quote:

Originally Posted by Jetmech727

Got small block mm coming from memeber pumpgas. I'll try that this weekend. Anybody need bb mounts?

Sweet, let us know how it turns out...

Jetmech727 · 09-11-2009, 08:38 PM

I have now got the trans cross member where I believe that it should be. I obtained a set of sb motor mounts and any configeration that I have tried them in does not work. The sb mounts do line up with any of the lower holes on the cross member. The postion that I have the mounts in pics is as close as I could get them. I could make it work but would have to drill new holes top and bottom. I really don't want to do that. But I really don't want to spend the rest of my life on mounting this drive train. Any help would be great.

Tx Firefighter · 09-12-2009, 06:32 AM

Uh fellas, those original mounts were not big block mounts.

Here are the big block mounts.

Length of tailshaft has zero to do with trans mounting to the crossmember. The mount is in the same place regardless of tailshaft length.

Small block mounts will mount in the three front holes without drilling. If you are having to drill holes to mount them you either have six cylinder mounts or you have them reversed left to right side. Post pictures of your small block mounts and I can tell you if they are really small block mounts.

Please read this thread. I posted lots of pictures and details about identifying frame stands.

http://67-72chevytrucks.com/vboard/s...d.php?t=341808

02-24-2009, 12:24 AM	#1
Jetmech727 Registered User Join Date: Sep 2004 Location: Indianapolis,IN Posts: 148	manual to auto swap problem???????? Doing a manual to auto swap. Bolted everything together and i'm coming up an 1" short on the trans crossmember with the c/m bolted to frame (nothing is tight at this point bolts in place). Everything needs to go fwd about and 1". I have loosened all motor mounts and slid everything fwd as far as i could and still can not get the trans to mate to the crossmember. Any Ideas?? Thanks in advance __________________ "When cows laugh, does milk come out of their nose?"

02-24-2009, 12:50 AM	#2
67ChevyRedneck Hittin E-Z Street on Mud Tires Join Date: Nov 2004 Location: Greenville, SC Posts: 23,090	Re: manual to auto swap problem???????? What transmission are you using? I used a 700R and had to redrill the holes for the mounts. I think I was able to use the back holes for the front of the crossmember and had to drill the back holes. __________________ Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride American Born, Country by the Grace of God 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications! Last edited by 67ChevyRedneck; 02-24-2009 at 12:51 AM.

02-24-2009, 01:09 AM	#3
Jetmech727 Registered User Join Date: Sep 2004 Location: Indianapolis,IN Posts: 148	Re: manual to auto swap problem???????? 350 trans __________________ "When cows laugh, does milk come out of their nose?"

02-24-2009, 02:01 AM	#4
67ChevyRedneck Hittin E-Z Street on Mud Tires Join Date: Nov 2004 Location: Greenville, SC Posts: 23,090	Re: manual to auto swap problem???????? V8, I-6? If V-8, is the V-8 in the correct V-8 location or is it in the I-6 location? __________________ Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride American Born, Country by the Grace of God 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications! Last edited by 67ChevyRedneck; 02-24-2009 at 02:01 AM.

02-24-2009, 06:26 AM	#5
Jetmech727 Registered User Join Date: Sep 2004 Location: Indianapolis,IN Posts: 148	Re: manual to auto swap problem???????? the truck started life as a big block. Then went to small block. It has never had a I-6. Thanks for the reply __________________ "When cows laugh, does milk come out of their nose?"

02-24-2009, 08:35 AM	#6
70GMCer Senior Member Join Date: Apr 2005 Location: Joppa, Maryland Posts: 4,408	Re: manual to auto swap problem???????? What length tail shaft is on the 350. You may have the longer one & you need the 6" one to align with the xmember to fit in the stock location. If you have the longer shaft, you will have to redrill for the xmember to fit. Also, does your driveshaft fit? __________________ 1997 GMC Sierra Ext 1965 Mustang Last edited by 70GMCer; 02-24-2009 at 08:35 AM.

02-24-2009, 08:45 AM	#7
my67chevytruck Under Construction Join Date: Oct 2007 Location: Midlothian,TX (DFW) Posts: 4,555	Re: manual to auto swap problem???????? ANy pics to share? Are you sliding the slip yoke as far in the tranny as possible, then trying to connect to the rear end? I believe 67redneck was asking what position you have the motor mounted in. some ppl mount a sbc in the I-6 position. Pics will help 100 Fold.... __________________ Heath subscribe to the board here: http://67-72chevytrucks.com/vboard/payments.php http://67-72chevytrucks.com/vboard/s...d.php?t=157669 FAQ how to's 1956 Chevy Apache 1967 C10 SWB FleetSide (under construction) 1969 K10 SWB FleetSide (Future Build) 1972 C10 SWB Stepside (Future Build) 56 chevy truck : http://www.cardomain.com/ride/2955823/1 67 truck build: http://www.67-72chevytrucks.com/vboard/showthread.php?t=281357/1 69 k10: http://67-72chevytrucks.com/vboard/s...d.php?t=389470 Last edited by my67chevytruck; 02-24-2009 at 08:45 AM.

02-24-2009, 02:39 PM	#8
Jetmech727 Registered User Join Date: Sep 2004 Location: Indianapolis,IN Posts: 148	Re: manual to auto swap problem???????? Ok I'm down to a 1/2" to 3/4" shy. Take a look at the pics and see if you can find any think that looks incorrect. If evething looks good I'm going to start walking holes. Thanks [IMG][/IMG] [IMG][/IMG] [IMG][/IMG] [IMG][/IMG] [IMG][/IMG] [IMG][/IMG] __________________ "When cows laugh, does milk come out of their nose?" Last edited by Jetmech727; 02-24-2009 at 02:44 PM. Reason: add image

02-24-2009, 04:09 PM	#9
my67chevytruck Under Construction Join Date: Oct 2007 Location: Midlothian,TX (DFW) Posts: 4,555	Re: manual to auto swap problem???????? hmm. wondering if those are BB motor mounts. my SBC dont curve like that. it looks in the forward position to me. I have attached some pics for you. Attached Images __________________ Heath subscribe to the board here: http://67-72chevytrucks.com/vboard/payments.php http://67-72chevytrucks.com/vboard/s...d.php?t=157669 FAQ how to's 1956 Chevy Apache 1967 C10 SWB FleetSide (under construction) 1969 K10 SWB FleetSide (Future Build) 1972 C10 SWB Stepside (Future Build) 56 chevy truck : http://www.cardomain.com/ride/2955823/1 67 truck build: http://www.67-72chevytrucks.com/vboard/showthread.php?t=281357/1 69 k10: http://67-72chevytrucks.com/vboard/s...d.php?t=389470

02-24-2009, 04:30 PM	#10
Jetmech727 Registered User Join Date: Sep 2004 Location: Indianapolis,IN Posts: 148	Re: manual to auto swap problem???????? I'm pretty sure that thay are bb mounts. I did not know there was a difference. What do I need to change just the mount on the frame or eng mount as well? __________________ "When cows laugh, does milk come out of their nose?"

02-24-2009, 04:49 PM	#11
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: manual to auto swap problem???????? Been a long time since I've had 68 - 71 BBC engine stands... but are his on the wrong side... left for right? That'll move the engine forward a bit if I remember correctly.

02-24-2009, 09:50 PM	#12
my67chevytruck Under Construction Join Date: Oct 2007 Location: Midlothian,TX (DFW) Posts: 4,555	Re: manual to auto swap problem???????? Bttt. lets help Jet out. will switching to swb frame towers move the engine forward enough. could the bbc frame towers be reversed as longhorn mentioned. __________________ Heath subscribe to the board here: http://67-72chevytrucks.com/vboard/payments.php http://67-72chevytrucks.com/vboard/s...d.php?t=157669 FAQ how to's 1956 Chevy Apache 1967 C10 SWB FleetSide (under construction) 1969 K10 SWB FleetSide (Future Build) 1972 C10 SWB Stepside (Future Build) 56 chevy truck : http://www.cardomain.com/ride/2955823/1 67 truck build: http://www.67-72chevytrucks.com/vboard/showthread.php?t=281357/1 69 k10: http://67-72chevytrucks.com/vboard/s...d.php?t=389470

02-25-2009, 08:50 AM	#13
my67chevytruck Under Construction Join Date: Oct 2007 Location: Midlothian,TX (DFW) Posts: 4,555	Re: manual to auto swap problem???????? You may want to try switching the mounts from left to right to see if that gives you the 3/4 you need. That would be a little cheaper , and you could reuse your current bbc mounts. __________________ Heath subscribe to the board here: http://67-72chevytrucks.com/vboard/payments.php http://67-72chevytrucks.com/vboard/s...d.php?t=157669 FAQ how to's 1956 Chevy Apache 1967 C10 SWB FleetSide (under construction) 1969 K10 SWB FleetSide (Future Build) 1972 C10 SWB Stepside (Future Build) 56 chevy truck : http://www.cardomain.com/ride/2955823/1 67 truck build: http://www.67-72chevytrucks.com/vboard/showthread.php?t=281357/1 69 k10: http://67-72chevytrucks.com/vboard/s...d.php?t=389470

02-25-2009, 09:50 PM	#14
Jetmech727 Registered User Join Date: Sep 2004 Location: Indianapolis,IN Posts: 148	Re: manual to auto swap problem???????? Got small block mm coming from memeber pumpgas. I'll try that this weekend. Anybody need bb mounts? __________________ "When cows laugh, does milk come out of their nose?"

02-25-2009, 11:09 PM	#15
spinning wheels Registered User Join Date: Sep 2001 Location: Hacienda Heights, California USA Posts: 474	Re: manual to auto swap problem???????? BB mounts? sure. What did you do with the stick tranny? ( I ain't talkin about the skinny dude dressed like a woman). Was it a 4 speed? __________________ '72 GMC custom camper 350/350



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09-11-2009, 08:38 PM	#17
Jetmech727 Registered User Join Date: Sep 2004 Location: Indianapolis,IN Posts: 148	Re: manual to auto swap problem???????? motor mount trouble I have now got the trans cross member where I believe that it should be. I obtained a set of sb motor mounts and any configeration that I have tried them in does not work. The sb mounts do line up with any of the lower holes on the cross member. The postion that I have the mounts in pics is as close as I could get them. I could make it work but would have to drill new holes top and bottom. I really don't want to do that. But I really don't want to spend the rest of my life on mounting this drive train. Any help would be great. __________________ "When cows laugh, does milk come out of their nose?"

09-12-2009, 06:32 AM	#18
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Re: manual to auto swap problem???????? Uh fellas, those original mounts were not big block mounts. Here are the big block mounts. Length of tailshaft has zero to do with trans mounting to the crossmember. The mount is in the same place regardless of tailshaft length. Small block mounts will mount in the three front holes without drilling. If you are having to drill holes to mount them you either have six cylinder mounts or you have them reversed left to right side. Post pictures of your small block mounts and I can tell you if they are really small block mounts. Please read this thread. I posted lots of pictures and details about identifying frame stands. http://67-72chevytrucks.com/vboard/s...d.php?t=341808 __________________ I'm on the Instagram- @Gearhead_Kevin Last edited by Tx Firefighter; 09-12-2009 at 06:39 AM.

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