65-70 Full Size Power Train Tech Forum

Neilvermilion · Neilvermilion

Hey there, my car was born with a floor shifter which was gutted out and column shifter was installed. Now I'm collecting all parts to convert it back to floor shift and I thought I got all the parts (console with shifter, hump, linkage and kick down rod), however that thingy in between linkage rod and ki...

Shrike · Shrike

Can anyone explain this? The torque rating difference of the LS1 between Pontiac and Chevrolet? -- Edited by Shrike on Saturday 21st of October 2023 01:50:34 AM

cdnpont · cdnpont

The HP post previous got me looking at the specs, and surprised I see that my 69 Parisienne 350/250 with the powerglide should have a 3.08. I coud swear that it was a 2.73 as the car cruises along the highway no issue at 80 mph. No tach, but she feels like she's not working too hard at that speed.

LandShark68_2+2 · LandShark68_2+2

Hi guys, I've got my drivetrain moved over to the new frame and the mechanic painted the engine and tranny as well as other items. However, other parts don't look as good now. What would you suggest for replacing the power brake booster and reservoir ? What is the deal with these cadmium coated brake boo...

4SPEED427 · 4SPEED427

Oh man, what have I done......... Are you happy now Dan?

4SPEED427 · 4SPEED427

Man, in the past it was easy. Rock Auto or my local parts store. I would order a Luk or a Sachs clutch and no worries. Now neither one of them list a stock replacement clutch for a 66 396/427. Any of you guys buy one lately? If so, what did you buy?

ABC123 · ABC123

I just changed the plugs and wires with all AC Delco Pertronix conversion. The plugs taken out all showed even burn. You have watch carefully for the slight shake. When you are driving you can feel the slight shake. The re-manufacture carb w...

cdnpont · cdnpont

So in the new 69 resides a 35/250 with a Powerglide. Works and shifts as intended behind the 350. Just does it's job. I never thought I'd like a 2 speed, had mental designs on a 3 speed and maybe a OD, but I have to say it's a fine transmission for a cruiser with a 2.93. Exceeds what I would have thought, smoot...

SGS Welding · SGS Welding

Looking for an explanation I read online the debate about ported vacuum vs manifold for the vacuum advance canister on my distributor. the drivers side port on my carb SEEMS to be manifold vacuum because when it was idling I pulled it off to check and it definitely has good vacuum car runs and works f...

ABC123 · ABC123

The 335 horse 427 Carburetor is having major issues. Changed the filter. My carburetor rebuilder gave me a new filter to try first, The jobber units have stop valves (Not my filter and not my hand) Still not solving the problem in the carb Either starved for fuel or flooding out. Looks like a needle/sea...

4SPEED427 · 4SPEED427

So yesterday I pulled a pair of manifolds off an old seized 283. Naturally the heat riser valve is seized as they always seem to be. I thought I'd heat it to see if I could get the shaft to move. I'm glad I had glasses plus my tinted goggles on over them. As I heated it, suddenly it sounded like a gunshot and wha...

Doc69 · Doc69

When I close my hood the rear portion of the hood sits high to the fender on both sides. If I push it down on both sides it levels out. Is there a way to correct this without having to push it down all the time? thanks in advance for the suggestions

oshawacliff · oshawacliff

I took this set of gears out of my Impala to improve my gas mileage. Replaced with 3.08 ratio. Posted on Kijji for 50.00 Willing to take anything just to get them out of my trunk. Can be retrieved at the next show and shine. Meet me at your favourite location and unload my trunk. Part # on the crown 10090-G...

flatop · flatop

-- Edited by flatop on Saturday 19th of August 2023 01:43:21 PM -- Edited by flatop on Saturday 19th of August 2023 02:20:37 PM -- Edited by flatop on Saturday 19th of August 2023 02:22:33 PM -- Edited by flatop on Saturday 19th of August 2023 02:42:06 PM

ABC123 · ABC123

I have been giving a set of original, big block valve covers. Chrome but I will scuff them and paint them. They look correct for a 1969 but I am looking for opinions.

blkl36 · blkl36

Question, does anyone have or had an original survivor 1968 385 hp Canadian built Chevrolet or pontiac who has pictures of or knows/remembers definitively which air cleaner was used? My car is a 1968 Biscayne and I have the recognized 4 speed air cleaner (no thermal heat stove) but since the 68's did...

LandShark68_2+2 · LandShark68_2+2

Hi guys, I've been thinking about upgrading my rearend from a non-posi 2.56 to a posi 3.08. I came across this fella selling this slightly used Eaton Posi. Is this a good price ? He suggested they're about 900 new. Regards, Scott (LandShark ...)

Marty1 · Marty1

Having a noisy issue on both wheels and will have to prevent damages. I have a 1967 Bonneville Superior ambulance, the differential is 10 bolts. I found one used and rebuilt 3 hours south and the seller is pretty unclear on measurements. He said the differential is from a 1966 GTO and told me "59 inches h...

4SPEED427 · 4SPEED427

I've been gathering everything needed for...................well, you know..................... The last (and one of the most important pieces!) arrived in the mail today. I think all I need to do is bend a little bracket to weld on to the frame where the outer ball on the Z-bar fastens. Should ha...

4SPEED427 · 4SPEED427

When I rebuilt my 427 a few years ago, I wanted an original looking fuel pump but wasn't eager to pay the price for NOS. The fittings on the 66 pump didn't carry over into 67, so in Canada it was a unique pump. I think the US cars with a 396 in 65 used the 66 style pump but of course we never had them here. I bought...

Topic		Started By	Replies	Views	Last Post
	Powerglide linkage question (Preview) Hey there, my car was born with a floor shifter which was gutted out and column shifter was installed. Now I'm collecting all parts to convert it back to floor shift and I thought I got all the parts (console with shifter, hump, linkage and kick down rod), however that thingy in between linkage rod and ki...	Neilvermilion	1	382	November 15th by Neilvermilion
	LS1 Performance numbers (Preview) Can anyone explain this? The torque rating difference of the LS1 between Pontiac and Chevrolet? -- Edited by Shrike on Saturday 21st of October 2023 01:50:34 AM	Shrike	7	660	Oct 22, 2023 by 4SPEED427
	What rear end ratio do I have? (Preview) The HP post previous got me looking at the specs, and surprised I see that my 69 Parisienne 350/250 with the powerglide should have a 3.08. I coud swear that it was a 2.73 as the car cruises along the highway no issue at 80 mph. No tach, but she feels like she's not working too hard at that speed.	cdnpont	15	619	Oct 22, 2023 by CdnGMfan
	68 Fullsize Power Brake Booster/Reservoir question (Preview) Hi guys, I've got my drivetrain moved over to the new frame and the mechanic painted the engine and tranny as well as other items. However, other parts don't look as good now. What would you suggest for replacing the power brake booster and reservoir ? What is the deal with these cadmium coated brake boo...	LandShark68_2+2	3	399	Oct 18, 2023 by CdnGMfan
	Pictures for Dano (4 speed conversion) ( 1 2 ) (Preview) Oh man, what have I done......... Are you happy now Dan?	4SPEED427	47	5441	Sep 22, 2023 by 4SPEED427
	11" clutch for big block? (Preview) Man, in the past it was easy. Rock Auto or my local parts store. I would order a Luk or a Sachs clutch and no worries. Now neither one of them list a stock replacement clutch for a 66 396/427. Any of you guys buy one lately? If so, what did you buy?	4SPEED427	17	627	Sep 21, 2023 by 4SPEED427
	Slight Stutter every 5 seconds at idle, can't figure it out. ( 1 2 ) (Preview) I just changed the plugs and wires with all AC Delco Pertronix conversion. The plugs taken out all showed even burn. You have watch carefully for the slight shake. When you are driving you can feel the slight shake. The re-manufacture carb w...	ABC123	40	3166	Sep 9, 2023 by DonSSDD

	Powerglides. Hey, they ain't so bad after all. (Preview) So in the new 69 resides a 35/250 with a Powerglide. Works and shifts as intended behind the 350. Just does it's job. I never thought I'd like a 2 speed, had mental designs on a 3 speed and maybe a OD, but I have to say it's a fine transmission for a cruiser with a 2.93. Exceeds what I would have thought, smoot...	cdnpont	15	673	Sep 8, 2023 by MC
	67 quadrajet 4mv (Preview) Looking for an explanation I read online the debate about ported vacuum vs manifold for the vacuum advance canister on my distributor. the drivers side port on my carb SEEMS to be manifold vacuum because when it was idling I pulled it off to check and it definitely has good vacuum car runs and works f...	SGS Welding	7	506	Sep 8, 2023 by SGS Welding
	Rochester 101 Student not the teacher (Preview) The 335 horse 427 Carburetor is having major issues. Changed the filter. My carburetor rebuilder gave me a new filter to try first, The jobber units have stop valves (Not my filter and not my hand) Still not solving the problem in the carb Either starved for fuel or flooding out. Looks like a needle/sea...	ABC123	16	713	Sep 6, 2023 by ABC123
	Exhaust manifold heat riser valve explosion! (Preview) So yesterday I pulled a pair of manifolds off an old seized 283. Naturally the heat riser valve is seized as they always seem to be. I thought I'd heat it to see if I could get the shaft to move. I'm glad I had glasses plus my tinted goggles on over them. As I heated it, suddenly it sounded like a gunshot and wha...	4SPEED427	5	418	Sep 2, 2023 by 4SPEED427
	Hood hinges question (Preview) When I close my hood the rear portion of the hood sits high to the fender on both sides. If I push it down on both sides it levels out. Is there a way to correct this without having to push it down all the time? thanks in advance for the suggestions	Doc69	2	383	Aug 30, 2023 by Doc69
	used crown and pinion set for sale FREE TO CP A MEMBER (Preview) I took this set of gears out of my Impala to improve my gas mileage. Replaced with 3.08 ratio. Posted on Kijji for 50.00 Willing to take anything just to get them out of my trunk. Can be retrieved at the next show and shine. Meet me at your favourite location and unload my trunk. Part # on the crown 10090-G...	oshawacliff	5	800	Aug 30, 2023 by oshawacliff
	12 BOLT SERIES 4 POSI 4.10 ratio (Preview) -- Edited by flatop on Saturday 19th of August 2023 01:43:21 PM -- Edited by flatop on Saturday 19th of August 2023 02:20:37 PM -- Edited by flatop on Saturday 19th of August 2023 02:22:33 PM -- Edited by flatop on Saturday 19th of August 2023 02:42:06 PM	flatop	5	523	Aug 19, 2023 by SD 396

	Scored ! A free set of original big block valve covers Experts What year are they ? (Preview) I have been giving a set of original, big block valve covers. Chrome but I will scuff them and paint them. They look correct for a 1969 but I am looking for opinions.	ABC123	7	784	Aug 10, 2023 by CdnGMfan
	1968 427 air cleaners (Preview) Question, does anyone have or had an original survivor 1968 385 hp Canadian built Chevrolet or pontiac who has pictures of or knows/remembers definitively which air cleaner was used? My car is a 1968 Biscayne and I have the recognized 4 speed air cleaner (no thermal heat stove) but since the 68's did...	blkl36	17	1549	Aug 6, 2023 by NOS
	Is this a good price for a 12 bolt 3-Series Eaton Posi ? (Preview) Hi guys, I've been thinking about upgrading my rearend from a non-posi 2.56 to a posi 3.08. I came across this fella selling this slightly used Eaton Posi. Is this a good price ? He suggested they're about 900 new. Regards, Scott (LandShark ...)	LandShark68_2+2	5	446	Aug 5, 2023 by blkl36
	1967 differential and rear axle question (Preview) Having a noisy issue on both wheels and will have to prevent damages. I have a 1967 Bonneville Superior ambulance, the differential is 10 bolts. I found one used and rebuilt 3 hours south and the seller is pretty unclear on measurements. He said the differential is from a 1966 GTO and told me "59 inches h...	Marty1	9	670	Jun 18, 2023 by a421cat
	The last puzzle piece (Preview) I've been gathering everything needed for...................well, you know..................... The last (and one of the most important pieces!) arrived in the mail today. I think all I need to do is bend a little bracket to weld on to the frame where the outer ball on the Z-bar fastens. Should ha...	4SPEED427	4	648	Jun 6, 2023 by 4SPEED427
	1966 Fuel Pump for 396 or 427 ( 1 2 ) (Preview) When I rebuilt my 427 a few years ago, I wanted an original looking fuel pump but wasn't eager to pay the price for NOS. The fittings on the 66 pump didn't carry over into 67, so in Canada it was a unique pump. I think the US cars with a 396 in 65 used the 66 style pump but of course we never had them here. I bought...	4SPEED427	38	2248	May 13, 2023 by 4SPEED427
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