65-70 Full Size Power Train Tech Forum

cdnpont · cdnpont

I figure I might try to document the conversion of the 65 Laurentian, from power glide to a 4 speed Muncie M20. I'll ad that Carl Stevenson has been a invaluable resource on this conversion, and has helped me out immensely. thanks Carl! And be sure to check out Dave's conversion post sticky as well. I'll...

4SPEED427 · 4SPEED427

I've decided to make an attempt at "tightening up" an original shifter for my 66. This is the same shifter body that was used in Canadian Pontiacs, Beaumonts, Acadians, numerous Chevrolets and I think maybe some Buicks prior to 1967. I have it all disassembled and need to order some parts for it. Fo...

cdnpont · cdnpont

It can be smooth when the bolts turn like new. Even the lines came undone. No rust. Drivers side needed the Vice Grip, but only just (because I wasn't willing to wait for the PB Blaster to work). But I'm sort of worried about the flex line to main chassis line. Cracked it open and pulled the axles. They hav...

cdnpont · cdnpont

I've thought it might of of interest to document my TH400 build, hopefully sparking some discussion around of what is best. Like my rear end build, the transmission was originally one of those things "Black art" and best thought as being left to the pro's. I have had very good success with my 12 bolt bui...

2drpost · 2drpost

i've had past inquires about parts and info, thought i'd post some info and pictures for those who have thoughts about yanking gears. keep in mind, this is chevrolet, cdn pontiac. starting with the pedals, '65-'70 pedals are basically the same. '65-'68 pedals have the clutch pedal stop angled towa...

Macker · Macker

I decided after having some issues with the plugs fouling in cylinders 5,8 and a bit of a choppy idle i would have the heads pulled as the engine has never been touched. Compression was tested and strong at 175 and 180 across all cylinders and the engine was running pretty well overall, I was pretty optim...

koolconvertible · koolconvertible

the diff breather for the diff I am putting in, seems to have come out and disappeared, never to be seen again. Any suggestions on what I could use? I could always use the one out of the diff which is in the car at the moment, but prefer not to. Cheers all!

Oldreliable · Oldreliable

Had anyone had an issue with finding the correct size u-jojnt? I have a 69 Gto convertible w/4 speed Muncie. It was originally an automatic. I ordered a pair of u joints, they were too big. New joints had 1.125" cups, mine are 1.060". I checked other 69 pontiac models and found the firebird had the size I n...

cdnpont · cdnpont

Here's an important tip for those choosing to use an aluminum rad for running up an engine on a stand. Use coolant, Never straight water. I used straight water. Drained it after testing the engine, but left it on the test stand hoses still connected. The residual water left in the bottom tank caused pin...

koolconvertible · koolconvertible

very curious why my vert has 3.07 ratio diff as apposed to what is in all aussie built b bodies which is 3.55. Maybe because it was assembled in canada? Anywho, explains why it has terrible launch and is a bit uninspiring planting the boot even though it has the big block But is fantastic for a long high spe...

cdnpont · cdnpont

Ready to move into finishing the cooling on the 65. I had mocked up the aluminum rad on the large 67 spacer, and the fan sits really close to the rad. Close in like just a little bit better than 1/4" Might be able to gain a little more when everything gets bolted in. Still have to add tabs to the spacer to accom...

flatop · flatop

i cant find the number for this manifold any where. Date code is K 6 7. so im thinking 1967 # is 3746833 GM 2 XF-1028 Thanks Percy PICS ADDED NOW it is a 4 bbl with 4 small holes -- Edited by flatop on Wednesday 26th of August 2020 01:...

cdnpont · cdnpont

On a 65 CP 327 300HP V8, where and how would the tips exit if they extended all the way to the back? Would they look and be positioned similar to the 65 Impala seen below, less resonators? The pipes I have kind of exit a little way back from the WW opening. Stealthy. It might grow on me leaving them this way (o...

SGS Welding · SGS Welding

67 Quadrajet The accelerator pump works once or twice then it hangs up halfway during the upstroke it gets stuck halfway then pops back to its ready position? need a new rubber? something to do with the checkball? Any help appreciated Im very green with carbureters Thanks Greg

SGS Welding · SGS Welding

Does anyone know the G M part number for a quality 180 thermostat the guys in my local dealership tell me they just get them from car quest for those old engines lol this needs to fit a small block Chevy thanks Greg

Riddler · Riddler

Driver side under carburator. What part is this? It's leaking oil

cdnpont · cdnpont

Got the exhaust system home after a very nice drive along 7 to Carlton place, and back home to the Kawartha's, north through Arnprior, Renfrew and Bancroft. Beautiful scenery, some eastern towns not yet seen, and the roads were actually pretty quiet. System is in very good shape so it seems to have bee...

Hobbes · Hobbes

Hi all, I have a 1965 standard (3 on the tree) I have a clutch question. When I start out in the morning the clutch engages quite nicely but as things heat up it tends to shutter going into gear. The whole car vibrates quite intensely. When I increase the RPM it overcomes this but its not really what I want to...

gparis7 · gparis7

I need to have a concours quality rebuild of my Quadrajet carb. I've been looking online but can't seem to find out who is who in this business. There was a company called Carburetor Rebuilders on Eugene St. In Oshawa. Are they still in business and recommended? There is also a company in Oshawa called...

seventy2plus2 · seventy2plus2

I had my engine built in 2006, and chose an entire valve train from Comp Cams. I actually picked it up from Year One just outside Atlanta while in the area visiting family. From the start I had weak vacuum, resulting in non-working power brakes. I've tried a few things, including changing the intake...

Topic		Started By	Replies	Views	Last Post
	STICKY: 65 B Body 4 speed conversion post. ( 1 2 3 4 ) (Preview) I figure I might try to document the conversion of the 65 Laurentian, from power glide to a 4 speed Muncie M20. I'll ad that Carl Stevenson has been a invaluable resource on this conversion, and has helped me out immensely. thanks Carl! And be sure to check out Dave's conversion post sticky as well. I'll...	cdnpont	80	2956	August 3rd by ABC123
	STICKY: 67 and older 4 speed shifter restoration (Preview) I've decided to make an attempt at "tightening up" an original shifter for my 66. This is the same shifter body that was used in Canadian Pontiacs, Beaumonts, Acadians, numerous Chevrolets and I think maybe some Buicks prior to 1967. I have it all disassembled and need to order some parts for it. Fo...	4SPEED427	9	673	May 8th by Canadian Poncho
	STICKY: Removal and rebuild of the 8.875" 12 bolt. ( 1 2 ) (Preview) It can be smooth when the bolts turn like new. Even the lines came undone. No rust. Drivers side needed the Vice Grip, but only just (because I wasn't willing to wait for the PB Blaster to work). But I'm sort of worried about the flex line to main chassis line. Cracked it open and pulled the axles. They hav...	cdnpont	41	2817	Nov 25, 2019 by cdnpont
	STICKY: TH400. Build post, ( 1 2 ) (Preview) I've thought it might of of interest to document my TH400 build, hopefully sparking some discussion around of what is best. Like my rear end build, the transmission was originally one of those things "Black art" and best thought as being left to the pro's. I have had very good success with my 12 bolt bui...	cdnpont	44	7774	Feb 20, 2019 by Bill shuba
	STICKY: '65-'70 AUTOMATIC TO MANUAL TRANS CONVERSION (Preview) i've had past inquires about parts and info, thought i'd post some info and pictures for those who have thoughts about yanking gears. keep in mind, this is chevrolet, cdn pontiac. starting with the pedals, '65-'70 pedals are basically the same. '65-'68 pedals have the clutch pedal stop angled towa...	2drpost	24	9628	Jul 10, 2018 by seventy2plus2
	Engine pulled and heads rebuilt on Pontiac after 50 years (Preview) I decided after having some issues with the plugs fouling in cylinders 5,8 and a bit of a choppy idle i would have the heads pulled as the engine has never been touched. Compression was tested and strong at 175 and 180 across all cylinders and the engine was running pretty well overall, I was pretty optim...	Macker	4	122	5 days ago by 73SC
	Lost the diff breather (Preview) the diff breather for the diff I am putting in, seems to have come out and disappeared, never to be seen again. Any suggestions on what I could use? I could always use the one out of the diff which is in the car at the moment, but prefer not to. Cheers all!	koolconvertible	2	155	September 21st by 4SPEED427

	69 GTO U-joints (Preview) Had anyone had an issue with finding the correct size u-jojnt? I have a 69 Gto convertible w/4 speed Muncie. It was originally an automatic. I ordered a pair of u joints, they were too big. New joints had 1.125" cups, mine are 1.060". I checked other 69 pontiac models and found the firebird had the size I n...	Oldreliable	4	197	September 15th by North
	Aluminum Rad...lesson learned. (Preview) Here's an important tip for those choosing to use an aluminum rad for running up an engine on a stand. Use coolant, Never straight water. I used straight water. Drained it after testing the engine, but left it on the test stand hoses still connected. The residual water left in the bottom tank caused pin...	cdnpont	19	447	September 11th by hawkeye5766
	Diff sizes aussie full size (Preview) very curious why my vert has 3.07 ratio diff as apposed to what is in all aussie built b bodies which is 3.55. Maybe because it was assembled in canada? Anywho, explains why it has terrible launch and is a bit uninspiring planting the boot even though it has the big block But is fantastic for a long high spe...	koolconvertible	12	263	September 3rd by long stroke
	Can a cooling fan be too close to a radiator? (Preview) Ready to move into finishing the cooling on the 65. I had mocked up the aluminum rad on the large 67 spacer, and the fan sits really close to the rad. Close in like just a little bit better than 1/4" Might be able to gain a little more when everything gets bolted in. Still have to add tabs to the spacer to accom...	cdnpont	8	252	September 2nd by oshawacliff
	intake manifold help id PICS ADDED (Preview) i cant find the number for this manifold any where. Date code is K 6 7. so im thinking 1967 # is 3746833 GM 2 XF-1028 Thanks Percy PICS ADDED NOW it is a 4 bbl with 4 small holes -- Edited by flatop on Wednesday 26th of August 2020 01:...	flatop	18	377	September 1st by cranks38
	1965 B body tailpipe exit question. Opinion. (Preview) On a 65 CP 327 300HP V8, where and how would the tips exit if they extended all the way to the back? Would they look and be positioned similar to the 65 Impala seen below, less resonators? The pipes I have kind of exit a little way back from the WW opening. Stealthy. It might grow on me leaving them this way (o...	cdnpont	15	314	August 30th by CdnGMfan
	Quadrajet accelerator valve sticking (Preview) 67 Quadrajet The accelerator pump works once or twice then it hangs up halfway during the upstroke it gets stuck halfway then pops back to its ready position? need a new rubber? something to do with the checkball? Any help appreciated Im very green with carbureters Thanks Greg	SGS Welding	9	221	August 20th by unruhjonny

	180 thermostat (Preview) Does anyone know the G M part number for a quality 180 thermostat the guys in my local dealership tell me they just get them from car quest for those old engines lol this needs to fit a small block Chevy thanks Greg	SGS Welding	6	201	August 12th by SGS Welding
	'67 283 oil leak (Preview) Driver side under carburator. What part is this? It's leaking oil	Riddler	5	346	August 8th by jmont64
	Got the pipes home. Now Questions. (Preview) Got the exhaust system home after a very nice drive along 7 to Carlton place, and back home to the Kawartha's, north through Arnprior, Renfrew and Bancroft. Beautiful scenery, some eastern towns not yet seen, and the roads were actually pretty quiet. System is in very good shape so it seems to have bee...	cdnpont	5	259	July 30th by seventy2plus2
	Clutch question? (Preview) Hi all, I have a 1965 standard (3 on the tree) I have a clutch question. When I start out in the morning the clutch engages quite nicely but as things heat up it tends to shutter going into gear. The whole car vibrates quite intensely. When I increase the RPM it overcomes this but its not really what I want to...	Hobbes	5	215	July 29th by cranks38
	Looking for a Reliable Carburetor Rebuilder ( 1 2 ) (Preview) I need to have a concours quality rebuild of my Quadrajet carb. I've been looking online but can't seem to find out who is who in this business. There was a company called Carburetor Rebuilders on Eugene St. In Oshawa. Are they still in business and recommended? There is also a company in Oshawa called...	gparis7	27	1221	June 26th by gparis7
	It's time for a cam change in the 454 (Preview) I had my engine built in 2006, and chose an entire valve train from Comp Cams. I actually picked it up from Year One just outside Atlanta while in the area visiting family. From the start I had weak vacuum, resulting in non-working power brakes. I've tried a few things, including changing the intake...	seventy2plus2	23	876	June 23rd by Pontiacanada
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