65-70 Full Size Power Train Tech Forum

cdnpont · cdnpont

So I'm contemplating building up the bare 12 bolt housing I have sitting. To go into the 65 post project. Need a winter project I guess. Reason being, I'd like to be rid of the 3 arm 10 bolt. I'd probably not even notice, but I'd still know it was there. Plus the 10 bolt is leaking like a sieve. The current gea...

Bill shuba · Bill shuba

Hello all can you help me figure this motor out,,year ect any info will help thank you !! 618 block heads 441 Z ? front casting numbers 791155811 TO6I HM

Gmc guy · Gmc guy

Hi all. I am seeking the shift linkage for my 68. It is bolted to the body and the rod sits in a bushing. The rod goes across to the tranny shifter Linkage. The one I have does not have a bushing and my car starts in reverse even though the gear shift on the steering column is completely up in the park position....

4SPEED427 · 4SPEED427

I just had an interesting conversation with a friend who is a big follower of the L72 427's in 66 B bodies. He has documentation for one of his cars that is a Canadian car. When he mentioned that, it hit me that GM in those years documented the engines lumped together over both car lines. If you document a fu...

70Laurentian · 70Laurentian

Hi there, Ive got a 1970 Pontiac Laurentian and it seems to have a 2.56 10 bolt rear end. Does anyone know if this is an 8.2 or 8.5 corporate size rear? All help is appreciated

SGS Welding · SGS Welding

I seem to remember one Mark did a few years back??? I searched for it but alas , I could not find it.... Does anyone remember? Or am I out lunch???

68 Grande · 68 Grande

I just wanted to share my experience of my water pump rebuild by Winnipeg based AutoLine Products. I pulled this short necked water pump off the Grande's 396 at the time of rebuild and came to the conclusion that this pump must be the original factory pump. There was a little play in the bearing but the p...

cdnpont · cdnpont

Can you test shift, or bench shift a Muncie trans without a fill of oil? It only has sticky assembly lube on pretty much everything. Some oil on the gears. I'd heard somewhere that you shouldn't do it without the proper fill of lube. True?

4SPEED427 · 4SPEED427

So today Carl (68_Grande) sent me the copy of the powertrain chart he got with his GM documents. To me, the thinking is backwards on axle ratios between the 396 and 427. Why would the 427 need a steeper rear gear than a 396? More power, more torque on a 427 and yet they give it more gear? Why would you want...

mike667 · mike667

Alright guys, So the cooler months are ahead of us, and Im looking to be working on the car this winter in the garage. So for my 66 Pontiac, it comes with a 389 with AC. It does run, but does need a tune up badly. still seems to run smoothly though. 1)It only has a 2bbl carb on it currently... I do want to upgrade...

cdnpont · cdnpont

On a 65 B, what colour would a 4 speed bellhousing be paired with a 327? Chevrolet orange, or natural? Thanks, Mark

cdnpont · cdnpont

I know it's been gone over before, but will all straight across bolt pattern starter motors work on a 153 tooth manual flywheel? More importantly, will the straight across style fit in the smaller bellhousing? Specifically a GM 3840383. Above all, do I need a straight across pattern starter with a sp...

cdnpont · cdnpont

So I'm rebuilding and setting up my 66 vintage Muncie 4 speed shifter mechanism. All the parts have been cleaned, zinc etched, and are just lightly oiled, polished smooth on the contact surfaces. Working now to shim it all in close, and align it to neutral. What lube would you use on it in the end? Certai...

ABC123 · ABC123

Todd suggested I go see Tiny's in Ingersoll, ON A long time Canadian Poncho friend. Other people have told me he is the best small block Chev guy around. After seeing my car he suggested that the points have to go. The biggest problem he said is that no one makes a decent set of points any more. He said I woul...

Mondo Poncho · Mondo Poncho

I have one of our members at my place in the lower mainland near Vancouver. He drove across the country for one of my cars. Putting it together, we see that the rear differential has seized. Im trying to attach a picture with the cover open. Im wondering if anyone has any advice on how to get this thing roll...

cdnpont · cdnpont

https://www.gearvendors.com/product/manual-4-speed-muncie-m-202122-27-spline/

Riddler · Riddler

Hi, i have a 67 Parisienne with a 283. Recently when i unplugged one of the spark wires from the distributor, i noticed the gromet came off with the wire (pictured) Is there a way to fix this? If i need a new cap, does anyone recognize this kind of distributor? Thanks -- Edited by Riddler on Friday 28th of Ju...

oshawacliff · oshawacliff

400HP unit part #30003 https://fitechefi.com/ There is a $150.00 off deal..... peaked my interest. I have been getting terrible gas mileage with my 350 Crate in my Impala. I am running hei distributor. edelbrock intake and a edelbrock 1405 carb Use cruise control on the highway above 40 mph. No...

396 Big Block · 396 Big Block

Hi All, Im new to this forum and very excited to check it out. I am in the process of purchasing a 71 Acadian SS in fantastic shape. Theres not a lot of info on this model so let me describe it to you all 71 Acadian SS 396 BBC (72 Block), M22,373 Posi, 31Spline Axles, aftermarket Intake and carb, Gun Metal grey...

Bill shuba · Bill shuba

I took my gas tank out today..can't save it too badly dented up,the price of a new one if you can find one is crazy anyways took the sending unit out and have never seen one like it, its a canister, is the floats inside it and can you get to them to check it out or do youi replace the whole unit ?? thank you ...

Topic		Started By	Replies	Views	Last Post
	What axle ratio would you go with? (Preview) So I'm contemplating building up the bare 12 bolt housing I have sitting. To go into the 65 post project. Need a winter project I guess. Reason being, I'd like to be rid of the 3 arm 10 bolt. I'd probably not even notice, but I'd still know it was there. Plus the 10 bolt is leaking like a sieve. The current gea...	cdnpont	24	2290	Dec 16, 2019 by unruhjonny
	350 numbers (Preview) Hello all can you help me figure this motor out,,year ect any info will help thank you !! 618 block heads 441 Z ? front casting numbers 791155811 TO6I HM	Bill shuba	7	1706	Dec 10, 2019 by HK1837
	1968 Parisienne shift linkage (Preview) Hi all. I am seeking the shift linkage for my 68. It is bolted to the body and the rod sits in a bushing. The rod goes across to the tranny shifter Linkage. The one I have does not have a bushing and my car starts in reverse even though the gear shift on the steering column is completely up in the park position....	Gmc guy	3	1222	Dec 6, 2019 by seventy2plus2
	L72 66 Canadian Pontiacs (Preview) I just had an interesting conversation with a friend who is a big follower of the L72 427's in 66 B bodies. He has documentation for one of his cars that is a Canadian car. When he mentioned that, it hit me that GM in those years documented the engines lumped together over both car lines. If you document a fu...	4SPEED427	5	1286	Dec 5, 2019 by 66 ponchoboy
	1970 Pontiac Laurentian Rear end determinations (Preview) Hi there, Ive got a 1970 Pontiac Laurentian and it seems to have a 2.56 10 bolt rear end. Does anyone know if this is an 8.2 or 8.5 corporate size rear? All help is appreciated	70Laurentian	2	1271	Nov 27, 2019 by 70Laurentian
	12 bolt tutorial (Preview) I seem to remember one Mark did a few years back??? I searched for it but alas , I could not find it.... Does anyone remember? Or am I out lunch???	SGS Welding	2	1393	Nov 26, 2019 by SGS Welding
	68 Water Pump Re-build (Preview) I just wanted to share my experience of my water pump rebuild by Winnipeg based AutoLine Products. I pulled this short necked water pump off the Grande's 396 at the time of rebuild and came to the conclusion that this pump must be the original factory pump. There was a little play in the bearing but the p...	68 Grande	13	1420	Nov 9, 2019 by 68 Grande
Nov 18 to Dec 2 Black Friday UP TO 50% OFF Plus Huge Coupons
	Can you safely dry shift a Muncie? (Preview) Can you test shift, or bench shift a Muncie trans without a fill of oil? It only has sticky assembly lube on pretty much everything. Some oil on the gears. I'd heard somewhere that you shouldn't do it without the proper fill of lube. True?	cdnpont	2	1345	Nov 8, 2019 by cdnpont
	68 Powertrain Axle Chart (Preview) So today Carl (68_Grande) sent me the copy of the powertrain chart he got with his GM documents. To me, the thinking is backwards on axle ratios between the 396 and 427. Why would the 427 need a steeper rear gear than a 396? More power, more torque on a 427 and yet they give it more gear? Why would you want...	4SPEED427	13	1066	Nov 7, 2019 by 73SC
	Pontiac 389: Where to Start? (Preview) Alright guys, So the cooler months are ahead of us, and Im looking to be working on the car this winter in the garage. So for my 66 Pontiac, it comes with a 389 with AC. It does run, but does need a tune up badly. still seems to run smoothly though. 1)It only has a 2bbl carb on it currently... I do want to upgrade...	mike667	5	1217	Oct 22, 2019 by Prefectca
	4 speed Bellhousing; colour question. (Preview) On a 65 B, what colour would a 4 speed bellhousing be paired with a 327? Chevrolet orange, or natural? Thanks, Mark	cdnpont	9	1184	Oct 19, 2019 by 4SPEED427
	Starter motor question; for 153 tooth, manual. (Preview) I know it's been gone over before, but will all straight across bolt pattern starter motors work on a 153 tooth manual flywheel? More importantly, will the straight across style fit in the smaller bellhousing? Specifically a GM 3840383. Above all, do I need a straight across pattern starter with a sp...	cdnpont	9	1343	Oct 14, 2019 by 4SPEED427
	Muncie 4 speed shifter, what to lube with? (Preview) So I'm rebuilding and setting up my 66 vintage Muncie 4 speed shifter mechanism. All the parts have been cleaned, zinc etched, and are just lightly oiled, polished smooth on the contact surfaces. Working now to shim it all in close, and align it to neutral. What lube would you use on it in the end? Certai...	cdnpont	6	1261	Oct 11, 2019 by cdnpont
	"Get the points out" SB 350 question (Preview) Todd suggested I go see Tiny's in Ingersoll, ON A long time Canadian Poncho friend. Other people have told me he is the best small block Chev guy around. After seeing my car he suggested that the points have to go. The biggest problem he said is that no one makes a decent set of points any more. He said I woul...	ABC123	22	12511	Sep 21, 2019 by Taylor55
Nov 18 to Dec 2 Black Friday UP TO 50% OFF Plus Huge Coupons
	Need quick fix or replacement for seized differential. Help appreciated (Preview) I have one of our members at my place in the lower mainland near Vancouver. He drove across the country for one of my cars. Putting it together, we see that the rear differential has seized. Im trying to attach a picture with the cover open. Im wondering if anyone has any advice on how to get this thing roll...	Mondo Poncho	6	1238	Sep 2, 2019 by Mondo Poncho
	Gear Vendors Overdrive, on a Muncie M20 (Preview) https://www.gearvendors.com/product/manual-4-speed-muncie-m-202122-27-spline/	cdnpont	6	2201	Aug 21, 2019 by dualquadpete
	Recognize this distributor (Preview) Hi, i have a 67 Parisienne with a 283. Recently when i unplugged one of the spark wires from the distributor, i noticed the gromet came off with the wire (pictured) Is there a way to fix this? If i need a new cap, does anyone recognize this kind of distributor? Thanks -- Edited by Riddler on Friday 28th of Ju...	Riddler	4	1235	Jul 17, 2019 by Riddler
	Considering EFI Tech 400 hp unit any feedback appreciated (Preview) 400HP unit part #30003 https://fitechefi.com/ There is a $150.00 off deal..... peaked my interest. I have been getting terrible gas mileage with my 350 Crate in my Impala. I am running hei distributor. edelbrock intake and a edelbrock 1405 carb Use cruise control on the highway above 40 mph. No...	oshawacliff	6	1483	Jul 1, 2019 by koolconvertible
	71 Acadian SS (Preview) Hi All, Im new to this forum and very excited to check it out. I am in the process of purchasing a 71 Acadian SS in fantastic shape. Theres not a lot of info on this model so let me describe it to you all 71 Acadian SS 396 BBC (72 Block), M22,373 Posi, 31Spline Axles, aftermarket Intake and carb, Gun Metal grey...	396 Big Block	6	1030	Jun 4, 2019 by seventy2plus2
	69 gas tank ( 1 2 ) (Preview) I took my gas tank out today..can't save it too badly dented up,the price of a new one if you can find one is crazy anyways took the sending unit out and have never seen one like it, its a canister, is the floats inside it and can you get to them to check it out or do youi replace the whole unit ?? thank you ...	Bill shuba	39	6204	May 23, 2019 by Bill shuba
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