65-70 Full Size Power Train Tech Forum

flatop · flatop

1968 327 replacement,truck engine.piston number is 3796494.cant find any info on it.What im looking for is the pluc cc' measurement to use for calculating compression as I have a set of 58 cc' heads and don't want to be too high. thanks percy why are the rods red?

Kevin66427 · Kevin66427

So, I could use your help here gang. For 30 years, I have always had trouble with the belt running on the fan, radiator etc. They all seem to stretch so easily. I have to reposition the alternator on it's bracket frequently and now it is once again at it's full travel so that I cannot put anymore tension on t...

koolconvertible · koolconvertible

My little vert was not real good off he mark. Not really getting into the power band of the cam. Heavy car to get going.....worked out my diff ratio is 3.08. It is a posi which is pretty handy. More a highway kind of thing...have a set of closed chamber heads with larger valves to go on And some roller rocker...

jonathanD · jonathanD

Hi guys! So i ended up with a posi unit in a trade will This work in my 12 bolt?

ABC123 · ABC123

Say good bye to my "Dorky little pipe" This week I am upgrading to dual exhaust from the current low flow system. I have been told that this new free flowing system may not agree with my carburetor settings. I'm looking for thoughts from those whom had experience with a 2 barrel, dual exhaust set up. Th...

4SPEED427 · 4SPEED427

These things always get a bad rap. I rebuilt it with a new thicker shim, pivot pin and adjusted it just right. I'm not ready to blow up my 427 if I miss a gear but tonight I had the urge to do what I said I'd never do to this car, powershifting, just not at full throttle... [video=https://www.youtube.com/w...

Leo2+2 · Leo2+2

My V-shaped drive belt broke today, lucky I wasn't far from home. Will try to buy one tomorrow morning if stores are open otherwise will have to wait. I wonder should I leave 1/2 or 3/4 inch deflection? I don't want to put it too tight nor too loose. 67 Parisienne V8 with a 305 from a GMC pick-up instead of i...

cdnpont · cdnpont

So my 327 build has been sitting in dry heated storage for about 8 months now after having been run in on the stand for about an hour. Block drained of water. I've been thinking about it. Should I pull the plugs, give the cylinders each a shot of storage oil and crank it over a few times? Maybe until I see some...

cdnpont · cdnpont

In our place, For Carl,

BB-Acadian · BB-Acadian

I was fortunate to own a 66 Pontiac grande pariensene with an original 427 390HP in the late 80's. Like a doppy kid my desire was for the motor, not the car. In 1988, I pulled the 427 out, installed a 396 in the car and sold it to a guy who took it to Fort McMurray and have since heard the car is in Banff? The 42...

4SPEED427 · 4SPEED427

I am looking online to try to find the correct air cleaner decals for my 66. I can find the "Pontiac 427" decal but underneath it would be a"JET FLAME 427 390 HORSEPOWER" and it appears nobody reproduces that one. Has anyone ever seen the Jet Flame decal reproduced listing the 390 horsepower? I can only f...

cdnpont · cdnpont

Interesting eye opening topic from Team Chevelle,https://www.chevelles.com/forums/32-heating-cooling/1095108-exploding-fans.html

jim_ss409 · jim_ss409

http://www.348-409.com/forum/threads/1965-ss-impala-409-production-question.27541/#post-241319

Dave Rose · Dave Rose

Hurst Shifter I.DI bought a box of shifters-trying to i.d this one-I cleaned it up-it is very nice the tranny/linkage rods seem to be newer Hurst Competition Plus Stamping3138 stamping890242F stamping which I believe is date code August 1969 for the 1970 model yearWhat would be the value of this?An...

koolconvertible · koolconvertible

has anyone had a crack at fitting an electric power steering pump into there fullsize chev/pontiac? cheers!

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

Topic		Started By	Replies	Views	Last Post
	need help identify pistons (Preview) 1968 327 replacement,truck engine.piston number is 3796494.cant find any info on it.What im looking for is the pluc cc' measurement to use for calculating compression as I have a set of 58 cc' heads and don't want to be too high. thanks percy why are the rods red?	flatop	9	1116	Jun 15, 2020 by HK1837
	Drive belt (Preview) So, I could use your help here gang. For 30 years, I have always had trouble with the belt running on the fan, radiator etc. They all seem to stretch so easily. I have to reposition the alternator on it's bracket frequently and now it is once again at it's full travel so that I cannot put anymore tension on t...	Kevin66427	18	961	Jun 13, 2020 by Kevin66427
	Nice score today in my search for better launch. (Preview) My little vert was not real good off he mark. Not really getting into the power band of the cam. Heavy car to get going.....worked out my diff ratio is 3.08. It is a posi which is pretty handy. More a highway kind of thing...have a set of closed chamber heads with larger valves to go on And some roller rocker...	koolconvertible	3	995	Jun 12, 2020 by koolconvertible
	Posi identification (Preview) Hi guys! So i ended up with a posi unit in a trade will This work in my 12 bolt?	jonathanD	4	833	Jun 2, 2020 by Beaumont4008
	2 barrel question ( 1 2 ) single to dual exhaust (Preview) Say good bye to my "Dorky little pipe" This week I am upgrading to dual exhaust from the current low flow system. I have been told that this new free flowing system may not agree with my carburetor settings. I'm looking for thoughts from those whom had experience with a 2 barrel, dual exhaust set up. Th...	ABC123	35	3116	May 25, 2020 by ABC123
	Powershifting a stock Muncie shifter (Preview) These things always get a bad rap. I rebuilt it with a new thicker shim, pivot pin and adjusted it just right. I'm not ready to blow up my 427 if I miss a gear but tonight I had the urge to do what I said I'd never do to this car, powershifting, just not at full throttle... [video=https://www.youtube.com/w...	4SPEED427	21	1251	May 21, 2020 by dualquadpete
	Drive belt just broke (Preview) My V-shaped drive belt broke today, lucky I wasn't far from home. Will try to buy one tomorrow morning if stores are open otherwise will have to wait. I wonder should I leave 1/2 or 3/4 inch deflection? I don't want to put it too tight nor too loose. 67 Parisienne V8 with a 305 from a GMC pick-up instead of i...	Leo2+2	1	945	Apr 11, 2020 by 4SPEED427

	New engine. Sitting for 8 months. What to do? ( 1 2 ) (Preview) So my 327 build has been sitting in dry heated storage for about 8 months now after having been run in on the stand for about an hour. Block drained of water. I've been thinking about it. Should I pull the plugs, give the cylinders each a shot of storage oil and crank it over a few times? Maybe until I see some...	cdnpont	26	2291	Feb 18, 2020 by Yukon man
	Got the 4 speed shifter in place in today, (Preview) In our place, For Carl,	cdnpont	7	1392	Jan 31, 2020 by cdnpont
	1966 Pontiac Grande Parisienne -427 engine looking for the original car ( 1 2 3 4 5 ) (Preview) I was fortunate to own a 66 Pontiac grande pariensene with an original 427 390HP in the late 80's. Like a doppy kid my desire was for the motor, not the car. In 1988, I pulled the 427 out, installed a 396 in the car and sold it to a guy who took it to Fort McMurray and have since heard the car is in Banff? The 42...	BB-Acadian	101	19869	Jan 22, 2020 by 4SPEED427
	66 Air Cleaner Decal 427 Jet Flame ( 1 2 3 4 ) (Preview) I am looking online to try to find the correct air cleaner decals for my 66. I can find the "Pontiac 427" decal but underneath it would be a"JET FLAME 427 390 HORSEPOWER" and it appears nobody reproduces that one. Has anyone ever seen the Jet Flame decal reproduced listing the 390 horsepower? I can only f...	4SPEED427	88	4778	Jan 5, 2020 by 4SPEED427
	Do you have an aftermarket Flex Fan? (Preview) Interesting eye opening topic from Team Chevelle,https://www.chevelles.com/forums/32-heating-cooling/1095108-exploding-fans.html	cdnpont	4	1140	Dec 26, 2019 by long stroke
	The last 409 car? ( 1 2 ) (Preview) http://www.348-409.com/forum/threads/1965-ss-impala-409-production-question.27541/#post-241319	jim_ss409	43	7036	Dec 24, 2019 by 4SPEED427
	Hurst Shifter I.D..HELP! (Preview) Hurst Shifter I.DI bought a box of shifters-trying to i.d this one-I cleaned it up-it is very nice the tranny/linkage rods seem to be newer Hurst Competition Plus Stamping3138 stamping890242F stamping which I believe is date code August 1969 for the 1970 model yearWhat would be the value of this?An...	Dave Rose	5	871	Dec 23, 2019 by Dave Rose

	Electricpower steering pump (Preview) has anyone had a crack at fitting an electric power steering pump into there fullsize chev/pontiac? cheers!	koolconvertible	9	1452	Dec 22, 2019 by Pontiacanada
	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	1960	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	1591	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	1105	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	1123	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	1142	Nov 27, 2019 by 70Laurentian
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