62 straight 6 v8 conversion question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

retselgerg · 02-10-2010, 10:59 AM

My friend has a 1962 shortbed i6 3 on the tree hydra clutch (all orginal 80k no rust truck..hes going to do a v8 swap what issues will he face as far as the clutch goes, motor mount location etc.. the truck has the older style setup...any input would be nice

markeb01 · 02-10-2010, 04:18 PM

Here's are a couple of links that will help. Almost everything applies, except the type of engine you are removing. Captainfab offers a plate for the hydraulic clutch that looks better than the item I designed.

http://67-72chevytrucks.com/vboard/s...d.php?t=369663
http://www.sixty7ss.proboards.com/in...lay&thread=666

http://www.67-72chevytrucks.com/vboa...49#post3479149
The link to his 60-62 plate doesn't appear to be working.

jchav62 · 02-10-2010, 05:17 PM

I'm assuming his '62 currently has a 235 or 261 in it now? That being the case, if he wants to use the original transmission, he will need an adapter plate. The older transmission will not bolt up to an SBC or BBC. It would be easier and probably cheaper to go with an automatic trans, IMO.

Good luck and keep us posted...

padresag · 02-10-2010, 06:01 PM

Quote:

Originally Posted by jchav62

I'm assuming his '62 currently has a 235 or 261 in it now? That being the case, if he wants to use the original transmission, he will need an adapter plate. The older transmission will not bolt up to an SBC or BBC. It would be easier and probably cheaper to go with an automatic trans, IMO.

Good luck and keep us posted...

the trans will bolt up to a later bellhouing. it is the 235-261 bellhousing that will not bolt up to a 63 and up eng. an early 283 b/housing will bolt to the later eng. what you do need to simplify things is a 60-62 v8 bellhousing from a 283-348 eng that has the pass side opening for the clutch linkage (hydraulic) light and med duty trucks 60-62 would use that bellhousing
ron

mikesC10 · 02-12-2010, 12:46 AM

This same swap was just recently done on my '62. I had to change out the bellhousing to a V-8 style. It bolted right in using the stock '62 crossmember and mounts. With the motor bolted to the bellhousing, this gave me the location to drill the frame to attach the stock style side motor mounts. A 1" spacer was needed between the motor mount and truck frame as mentioned above. I opted to swap out the hyd. clutch to a Z-bar assembly out of a '64 C-10. Plugged the hyd. side of the master cylinder, dropped in some block hugger headers. Hope this helps.

62gmc910 · 02-13-2010, 12:32 PM

I kept the hyd clutch but built a simple bracket for the slave cylinder to mount on the 63-72 bell housing , if all else is good it is a simple bracket , I made with a hack saw and drill , when I was 14 (a real long time ago ) If you need a pic I might be able to find one

If you want to be period correct the engine would have had a horse shoe mount to the crossmember

02-10-2010, 10:59 AM	#1
retselgerg Registered User Join Date: Mar 2007 Location: Grundy Virginia Posts: 385	62 straight 6 v8 conversion question My friend has a 1962 shortbed i6 3 on the tree hydra clutch (all orginal 80k no rust truck..hes going to do a v8 swap what issues will he face as far as the clutch goes, motor mount location etc.. the truck has the older style setup...any input would be nice __________________ "OLE BLUE" Goodwrench 350, 5speed, Tilt, PS, PB, "some guys got into cars for money or girls but i got into cars because of the cars" -Jay Leno

02-10-2010, 04:18 PM	#2
markeb01 Senior Enthusiast Join Date: Feb 2007 Location: Spokane Valley, WA Posts: 8,356	Re: 62 straight 6 v8 conversion question Here's are a couple of links that will help. Almost everything applies, except the type of engine you are removing. Captainfab offers a plate for the hydraulic clutch that looks better than the item I designed. http://67-72chevytrucks.com/vboard/s...d.php?t=369663 http://www.sixty7ss.proboards.com/in...lay&thread=666 http://www.67-72chevytrucks.com/vboa...49#post3479149 The link to his 60-62 plate doesn't appear to be working.

02-10-2010, 05:17 PM	#3
jchav62 1962 C-10 Join Date: Apr 2005 Location: Las Vegas, New Mexico Posts: 4,978	Re: 62 straight 6 v8 conversion question I'm assuming his '62 currently has a 235 or 261 in it now? That being the case, if he wants to use the original transmission, he will need an adapter plate. The older transmission will not bolt up to an SBC or BBC. It would be easier and probably cheaper to go with an automatic trans, IMO. Good luck and keep us posted... __________________ Joseph Chavez "See the USA in a Chevrolet!!" ......................_____ .........________//__{\_____ ,,,,,,,/__(O)___//___/__(O)_/ 1962 C10 Shortbed Fleetside 327/th350 GV overdrive 1974 C10 Longbed Fleetside 350/th350 "The Trash Truck" 1999 Chevy 2500 OBS, Longbed 5.7/4L80E 4x4 2015 GMC Sierra SLE 1500 4x4

02-12-2010, 12:46 AM	#5
mikesC10 Registered User Join Date: Jan 2010 Location: Yakima,WA Posts: 34	Re: 62 straight 6 v8 conversion question This same swap was just recently done on my '62. I had to change out the bellhousing to a V-8 style. It bolted right in using the stock '62 crossmember and mounts. With the motor bolted to the bellhousing, this gave me the location to drill the frame to attach the stock style side motor mounts. A 1" spacer was needed between the motor mount and truck frame as mentioned above. I opted to swap out the hyd. clutch to a Z-bar assembly out of a '64 C-10. Plugged the hyd. side of the master cylinder, dropped in some block hugger headers. Hope this helps.

02-13-2010, 12:32 PM	#6
62gmc910 Registered User Join Date: Nov 2009 Location: Cremona AB Canada Posts: 370	Re: 62 straight 6 v8 conversion question I kept the hyd clutch but built a simple bracket for the slave cylinder to mount on the 63-72 bell housing , if all else is good it is a simple bracket , I made with a hack saw and drill , when I was 14 (a real long time ago ) If you need a pic I might be able to find one If you want to be period correct the engine would have had a horse shoe mount to the crossmember __________________ 62 GMC 910 short fleetside 454 super t10 14 bolt w/gov lock 70s c20 front discs (built in the 80s) 65 GMC 930 dualwheel 292 4spd all origonal 39k mi(my sons truck) 63 GMC 950 camperized school bus, (Gus the bus) 350 4speed 2 speed rear 64 GMC 950 "spare" bus 283? 4speed detroit locker 53 GMC 1ton dual wheel bus 78 GMC c25 short course off road race truck(son's truck) 355 th400 14 bolt (www.wheel2wheel.ca) 88 Peterbilt 379 longhood (hauls race truck) Last edited by 62gmc910; 02-13-2010 at 12:34 PM.



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