stick to automatic swap question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

TooMany2count · 02-04-2007, 01:40 AM

I hve a 68 chevy longbed that had a 6 popper & 3spd stick in it. i'm going to slide in a SBC & 350 turbo long tailshaft tranny.
my question is this other then the yoke on the driveshaft is lenght of the driveshaft different between the 3spd stick trans & the auto???? thanks....joe

GREASEMONKEY72 · 02-04-2007, 03:43 AM

im pretty sure it is but i dont know how much

70GMCer · 02-04-2007, 07:43 AM

I know when I did my swap, I already had a 350 engine in mine w/3spd manual. The 350 turbo I used was the short shaft and hooked right into the drive shaft without any shortening. I think with the long shaft turbo, you will need to cut the drive shaft down, or get a short tail shaft for the trans. It would be cheaper to get the short shaft at a junk yard. Easy change. Someone else can chime in on this. While you're at it, check your speedo gears to make sure your speedometer will be correct.

70c/10barebone · 02-04-2007, 08:37 AM

Are you planning to mount the sbc in the 6cyl position? I've heard this is common and addresses some peoples drive shaft lenght issues. But that is using short shaft 350 turbo which is the same lenght as the 3sd manual.

cooters · 02-04-2007, 09:37 AM

changing tailshaft length requires a complete teardown of the tranny to change so it is cheaper to buy a driveshaft then change the shaft.

02-04-2007, 01:40 AM	#1
TooMany2count Who's in CHARGE?????????? Join Date: Nov 2002 Location: Cahokia, IL Posts: 454	stick to automatic swap question I hve a 68 chevy longbed that had a 6 popper & 3spd stick in it. i'm going to slide in a SBC & 350 turbo long tailshaft tranny. my question is this other then the yoke on the driveshaft is lenght of the driveshaft different between the 3spd stick trans & the auto???? thanks....joe __________________ Send a card to a soldier in Iraq My Music PlayList Large Marge Donate Blood,Plasma,Platelets & sign your DONORS CARD & SAVE a LIFE

02-04-2007, 03:43 AM	#2
GREASEMONKEY72 Registered User Join Date: Aug 2006 Location: Bakersfield,CA Posts: 7,893	Re: stick to automatic swap question im pretty sure it is but i dont know how much __________________ -steven Alte Seele S.S. "Allison" '72 C/10 LWB 350SB/TH350 - DD PITBULL IS NOT A CRIME

02-04-2007, 07:43 AM	#3
70GMCer Senior Member Join Date: Apr 2005 Location: Joppa, Maryland Posts: 4,408	Re: stick to automatic swap question I know when I did my swap, I already had a 350 engine in mine w/3spd manual. The 350 turbo I used was the short shaft and hooked right into the drive shaft without any shortening. I think with the long shaft turbo, you will need to cut the drive shaft down, or get a short tail shaft for the trans. It would be cheaper to get the short shaft at a junk yard. Easy change. Someone else can chime in on this. While you're at it, check your speedo gears to make sure your speedometer will be correct. __________________ 1997 GMC Sierra Ext 1965 Mustang

02-04-2007, 08:37 AM	#4
70c/10barebone Junior Member Join Date: Oct 2006 Location: Lawrence, KS Posts: 79	Re: stick to automatic swap question Are you planning to mount the sbc in the 6cyl position? I've heard this is common and addresses some peoples drive shaft lenght issues. But that is using short shaft 350 turbo which is the same lenght as the 3sd manual. __________________ 70 C/10 LWB 250

02-04-2007, 09:37 AM	#5
cooters Senior Member Join Date: Oct 2006 Location: Edmonton Alberta Posts: 458	Re: stick to automatic swap question changing tailshaft length requires a complete teardown of the tranny to change so it is cheaper to buy a driveshaft then change the shaft.



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