65-70 Full Size Power Train Tech Forum

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 ...

cdnpont · cdnpont

Looking to buy a flywheel and a clutch kit. I'm looking at a RAM 1511 Billet steel, 10.5", 153 tooth SFI rated for the 327. Says it weighs 26 lbs. Drilled for a diaphragm type clutch unit. Is there a weight difference between a cast and billet FW? I know they are much stronger, but should any weight diffe...

cdnpont · cdnpont

Is the Z Bar engine ball stud the longer one with the bigger thread.. And the frame side, the shorter one with the smaller thread. Thanks,

SGS Welding · SGS Welding

I was wondering if any members have tried this engine in our heavy cars? chevy performance crate engine HT383 part number 19355720 330 hp approx 440 ft/lbs torque approx all done around 5000 rpm sounds right for a 67 Parisienne 2 speed powerfullglide any suggestions or experience??? thanks guys G...

cdnpont · cdnpont

I'm wanting to restore my 67 327 Distributor. It has pretty low miles on it, and it's converted over to the basic Pertronix breakerless system. Is there much I can do to it (or need to do?)? I remember a post on this a ways back, but can't seem to find it. Also, should I do a new dist. gear owing to the purchase...

Topic		Started By	Replies	Views	Last Post
	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	1147	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	1247	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	1297	Nov 9, 2019 by 68 Grande
	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	1285	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	813	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	1054	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	1043	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	1229	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	1227	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	9474	Sep 21, 2019 by Taylor55
	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	1154	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	2046	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	1121	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	1300	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	897	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	5385	May 23, 2019 by Bill shuba
	Flywheel questions, (Preview) Looking to buy a flywheel and a clutch kit. I'm looking at a RAM 1511 Billet steel, 10.5", 153 tooth SFI rated for the 327. Says it weighs 26 lbs. Drilled for a diaphragm type clutch unit. Is there a weight difference between a cast and billet FW? I know they are much stronger, but should any weight diffe...	cdnpont	1	1161	May 14, 2019 by oshawacliff
	Z Bar Ball question; (Preview) Is the Z Bar engine ball stud the longer one with the bigger thread.. And the frame side, the shorter one with the smaller thread. Thanks,	cdnpont	2	1143	May 11, 2019 by 4SPEED427
	Small Block Chevy questions (Preview) I was wondering if any members have tried this engine in our heavy cars? chevy performance crate engine HT383 part number 19355720 330 hp approx 440 ft/lbs torque approx all done around 5000 rpm sounds right for a 67 Parisienne 2 speed powerfullglide any suggestions or experience??? thanks guys G...	SGS Welding	8	1133	May 1, 2019 by oshawacliff
	Wanting to restore my 327 distributor. Is there much I should know? (Preview) I'm wanting to restore my 67 327 Distributor. It has pretty low miles on it, and it's converted over to the basic Pertronix breakerless system. Is there much I can do to it (or need to do?)? I remember a post on this a ways back, but can't seem to find it. Also, should I do a new dist. gear owing to the purchase...	cdnpont	5	1447	Apr 9, 2019 by macsleuth
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