65-70 Full Size Power Train Tech Forum

Harvster · Harvster

I have a 1969 Pontiac Grande Parisienne 4door 427 V8 335 hp , but it has dual exhaust. It is original and my grandfather bought it in 1969 from Roy Pett GM in Lindsay Ontario. It has never seen a Canadian winter. It went to Florida until 1981. Stored for 28 years it looks a little rough but it is all there. A li...

4SPEED427 · 4SPEED427

Tonight I went on a mission. I'm trying to sort out what bench seat shifter handles fit what cars, and what each one looks like. Quite a bit of info online but from what I can tell, LOTS of wrong info on this topic, so I dug into the limited resources I have. From what I can find, from 64-67 Canadian Pontiacs...

cdnpont · cdnpont

What physical differences are there between an automatic coded Q-Jet compared to a manual one? I have a 1967 7027202 as came standard on my 67 327 automatic. Just wondering as the engine is now mated to a manual. Also, the carb was pro rebuilt about 9 years ago by Carburetor Rebuilders. it has sat dry fo...

67-Beaumont · 67-Beaumont

Hello, I have had a few Holley carbs in my day and never had them go dry Recently I got a 67 Beaumont , all is good but then it sits the carb bowls go dry (About a week) Stay Safe

cdnpont · cdnpont

New extra long cable to the 4 speed. Needle started off decent, but now is bouncing wildly. Any solution to the issue? Anyone experience the same? Thanks, Mark.

cdnpont · cdnpont

Question; Can one change a SBC 2 piece seal with the engine in place, in a 65 B Body? I have just detected a small drip in the 65. Don't think its the pan. If it stays this small I'll not worry too much. Second, Will this wee drip eventually foul my clutch?

koolconvertible · koolconvertible

So installed new diff. On removing driveshaft, the uni at the diff was tight. Removed and has strange wear patterns. How do you adjust the pinion angle on the 65s when they have a 4 link rear?? Cheers

cdnpont · cdnpont

Was there ever such a thing as a 3.23 ring and pinion for a 8.875" 12 bolt? The reason I ask, is in my thinking, it would be a great on road compromise ratio for a big car with a M20. And I'll be building a 4 leg 12 bolt for my 65 and already have an good open 3.08 carrier. My current 10 bolt has a 3.36 since it was a s...

Junkyard James · Junkyard James

First Time Post: Long story short, I have taken on a friends son's first car restoration. 65 Pontiac Parisienne Convertible. My question goes out to all you Pontiac full size experts. I would like to know exactly what I am working with before I start. MUCH appreciate any assistance you can provide me f...

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

Topic		Started By	Replies	Views	Last Post
	1969 427 Grande Parisienne (Preview) I have a 1969 Pontiac Grande Parisienne 4door 427 V8 335 hp , but it has dual exhaust. It is original and my grandfather bought it in 1969 from Roy Pett GM in Lindsay Ontario. It has never seen a Canadian winter. It went to Florida until 1981. Stored for 28 years it looks a little rough but it is all there. A li...	Harvster	23	2678	Nov 28, 2020 by CDN2PLS2
	Help identifying 4 speed bench seat handles. (Preview) Tonight I went on a mission. I'm trying to sort out what bench seat shifter handles fit what cars, and what each one looks like. Quite a bit of info online but from what I can tell, LOTS of wrong info on this topic, so I dug into the limited resources I have. From what I can find, from 64-67 Canadian Pontiacs...	4SPEED427	15	1524	Nov 26, 2020 by bjburnout
	AT/MT Quadrajet. What is the difference between the two? (Preview) What physical differences are there between an automatic coded Q-Jet compared to a manual one? I have a 1967 7027202 as came standard on my 67 327 automatic. Just wondering as the engine is now mated to a manual. Also, the carb was pro rebuilt about 9 years ago by Carburetor Rebuilders. it has sat dry fo...	cdnpont	15	3043	Nov 24, 2020 by unruhjonny
	Car sits for a week Holley carb bowls are dry. (Preview) Hello, I have had a few Holley carbs in my day and never had them go dry Recently I got a 67 Beaumont , all is good but then it sits the carb bowls go dry (About a week) Stay Safe	67-Beaumont	14	1517	Nov 23, 2020 by North
	Anyone ever have needle bounce with a new speedo cable? (Preview) New extra long cable to the 4 speed. Needle started off decent, but now is bouncing wildly. Any solution to the issue? Anyone experience the same? Thanks, Mark.	cdnpont	20	1324	Nov 20, 2020 by cdnpont
	SBC Main seal question, (Preview) Question; Can one change a SBC 2 piece seal with the engine in place, in a 65 B Body? I have just detected a small drip in the 65. Don't think its the pan. If it stays this small I'll not worry too much. Second, Will this wee drip eventually foul my clutch?	cdnpont	3	1454	Nov 13, 2020 by cdnpont
	Pinion angle (Preview) So installed new diff. On removing driveshaft, the uni at the diff was tight. Removed and has strange wear patterns. How do you adjust the pinion angle on the 65s when they have a 4 link rear?? Cheers	koolconvertible	6	1212	Nov 2, 2020 by cdnpont
Nov 18 to Dec 2 Black Friday UP TO 50% OFF Plus Huge Coupons
	12 bolt ratios. Availability question. (Preview) Was there ever such a thing as a 3.23 ring and pinion for a 8.875" 12 bolt? The reason I ask, is in my thinking, it would be a great on road compromise ratio for a big car with a M20. And I'll be building a 4 leg 12 bolt for my 65 and already have an good open 3.08 carrier. My current 10 bolt has a 3.36 since it was a s...	cdnpont	12	1065	Oct 30, 2020 by cdnpont
	65 Pontiac Parisienne Convertible Identification Help (Preview) First Time Post: Long story short, I have taken on a friends son's first car restoration. 65 Pontiac Parisienne Convertible. My question goes out to all you Pontiac full size experts. I would like to know exactly what I am working with before I start. MUCH appreciate any assistance you can provide me f...	Junkyard James	10	1358	Oct 29, 2020 by Junkyard James
	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	1100	Oct 15, 2020 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	1317	Sep 21, 2020 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	1229	Sep 15, 2020 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	1811	Sep 11, 2020 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	1380	Sep 3, 2020 by long stroke
Nov 18 to Dec 2 Black Friday UP TO 50% OFF Plus Huge Coupons
	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	1230	Sep 2, 2020 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	1333	Sep 1, 2020 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	960	Aug 30, 2020 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	1222	Aug 20, 2020 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	1106	Aug 12, 2020 by SGS Welding
	'67 283 oil leak (Preview) Driver side under carburator. What part is this? It's leaking oil	Riddler	5	1468	Aug 8, 2020 by jmont64
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