65-70 Full Size Power Train Tech Forum

4SPEED427 · 4SPEED427

https://www.ebay.com/itm/1965-1966-1967-1968-1969-1970-Chevy-Impala-Bel-Air-Caprice-Biscayne-Radiator/291519...

Hobbes · Hobbes

Hi ponchonians, just checking to see if someone knows what these symptoms might be, I have 1965 stratochief with the straight 6/250 one barrel. upon accelerating it started to stumble the engine sounds like its running fine but has a definite stumble in it It seems to be becoming more pronounced, It s...

koolconvertible · koolconvertible

hey hey! for the big block peeps, I am changing my heads. Tight budget and want to get a little more bang. presently running 781 heads in standard form. Good heads with hardened seats. Also have a pair of 049 heads spare on the shelf, also good heads but not hardened seats standard form. Both type heads ar...

oshawacliff · oshawacliff

I have an aluminum rad in my 67 350 crate and air conditioning. I have a flex fan and a spacer to position the fan. What I am experiencing is the temp continues to rise when left at idle for a few minutes. The temp will go to normal once I get moving and get some air through the rad. I want to consider putt...

SGS Welding · SGS Welding

I seem to remember Carl made mention of this a while back? Cant seem to find the thread

seventy2plus2 · seventy2plus2

Yesterday I was at Flatla Auto Wrecking by Brooks AB and got a complete cruise control system from a 69 Parisienne. I'd been looking for the white hardtop the last couple times I was there, but wasn't able to find it. Upon stopping by the office when I was there a few weeks ago, they gave me better instru...

65 SD L79 · 65 SD L79

Would a 66 impala dual exhaust system be the same as a 66 Parisienne?

4SPEED427 · 4SPEED427

Detailing on my 427 yesterday and I remembered I'd had an issue with the water pump pulley reinforcement not fitting the inside of the pulley. The reinforcement would drop down inside the pulley where it should go ( it sits up against the water pump hub, then the pulley goes on) but there was about .030"...

65 SD L79 · 65 SD L79

im looking for a diagram to to put this original 66 396 valve cover gasket Back to together

SGS Welding · SGS Welding

Anyone ever install one of these? Looking at pics on the Summit website it seems they have no fan? my pulley Im thinking of replacing is a fan and pulley all in one Just looking for any insight or others that have experience with this power saving upgrade? Thanks Greg

Junkyard James · Junkyard James

Evening All. After a few years its time for body mounts. However the full size frame comes with two sizes of body mounts marked as A and B, 7 of each and ABSOLUTLY no one can tell me where or what body position uses the A mount or B mount. This is after long (And I am NOT Joking Here) numerous discussions with e...

4SPEED427 · 4SPEED427

Never too old to learn. Today I decided to work on getting a spare starter for a big block (or manual trans small block with 11" flywheel) with the cast iron nose. I purchased a nose with the fork recently. I had a couple of used starters here with the aluminum nose, so simple enough, just swap the iron no...

4SPEED427 · 4SPEED427

Many of you may know that our 60's GM's had some special starter bolts for the starters that had a cast iron nose. I believe this nose was used exclusively on big blocks and/or small blocks with the 11" clutch (168 tooth flywheel) The original GM number is 3733289 for this bolt and it's not just a plain 3/8...

tulobf12 · tulobf12

I am swapping out a 283 and installing a 0.030 over 402 BBC in my 65 Parisienne. Would the optimum be factory rubber style or aftermarket poly? What parts have others used with success? It will be attached to the original PG (after a redo) or possibly a TH350 if finances allow.

65 SD L79 · 65 SD L79

does the 327 small and large journal crank use the same rear main seal?

gtodrive · gtodrive

So, I am looking through the Canadian GM parts manual and I come across a phrase that I'm scratching my head over. Next to the power steering pulley part number it reads: "1969/ALL WITH 396-427 ENGINES T/W FIELD INSTALLED CAR COOLING." What is considered 'car cooling'? In other pulley applications,...

oshawacliff · oshawacliff

STREET FEATUREThis Big-Block Pro-Street '76 Pontiac Stands Out In A Crowd! A multi-time World of Wheels winner, this 1976 Firebird was constructed in the early 1980s. Since completion it has only been driven about 200-250 miles and still looks like it's show-ready. This bird is equipped with a C...

LT1Caddy · LT1Caddy

Is there anyone who overhauls Muncie shifters? Can you install a Hurst shift handle on a Muncie? Answer my own question Duh... Yes someone makes a conversion attachment THX -- Edited by LT1Caddy on Saturday 13th of November 2021 09:48:06 PM

cdnpont · cdnpont

On the 65 over the last while, when I've been out driving on the highway at any length of time, at, say 2300 RPM sustained, a rattle at the back starts. Starts quiet, not constant then becomes louder and all the time. Sounds like it's near the right rear tire. Travels right through the body and it's alarmi...

65 SD L79 · 65 SD L79

So I have the 4 bolt block, 858 square port heads, 6223 crank, dimple rods and factory 069 intake. What I have to figure out is what pistons , cam and lifters to go with? Obviously cant go with the factory specs solid lifters and high dome pistons have to be able to drive this thing on todays gas

Topic		Started By	Replies	Views	Last Post
	Anyone use this aluminum radiator? ( 1 2 ) (Preview) https://www.ebay.com/itm/1965-1966-1967-1968-1969-1970-Chevy-Impala-Bel-Air-Caprice-Biscayne-Radiator/291519...	4SPEED427	27	3985	Jul 8, 2022 by 4SPEED427
	Stumble on acceleration ( 1 2 ) (Preview) Hi ponchonians, just checking to see if someone knows what these symptoms might be, I have 1965 stratochief with the straight 6/250 one barrel. upon accelerating it started to stumble the engine sounds like its running fine but has a definite stumble in it It seems to be becoming more pronounced, It s...	Hobbes	31	1862	Jul 4, 2022 by Hobbes
	Swapping my Big block heads over (Preview) hey hey! for the big block peeps, I am changing my heads. Tight budget and want to get a little more bang. presently running 781 heads in standard form. Good heads with hardened seats. Also have a pair of 049 heads spare on the shelf, also good heads but not hardened seats standard form. Both type heads ar...	koolconvertible	3	1180	Jun 25, 2022 by koolconvertible
	Instruments for measuring air flow through radiator (Preview) I have an aluminum rad in my 67 350 crate and air conditioning. I have a flex fan and a spacer to position the fan. What I am experiencing is the temp continues to rise when left at idle for a few minutes. The temp will go to normal once I get moving and get some air through the rad. I want to consider putt...	oshawacliff	11	1157	Jun 25, 2022 by koolconvertible
	New style mini starter swap? (Preview) I seem to remember Carl made mention of this a while back? Cant seem to find the thread	SGS Welding	15	1095	Jun 25, 2022 by koolconvertible
	What a score!! a COMPLETE cruise control system from a 69 Parisienne (Preview) Yesterday I was at Flatla Auto Wrecking by Brooks AB and got a complete cruise control system from a 69 Parisienne. I'd been looking for the white hardtop the last couple times I was there, but wasn't able to find it. Upon stopping by the office when I was there a few weeks ago, they gave me better instru...	seventy2plus2	16	1704	Jun 14, 2022 by seventy2plus2
	Exhaust system (Preview) Would a 66 impala dual exhaust system be the same as a 66 Parisienne?	65 SD L79	2	688	Jun 8, 2022 by 4SPEED427

	Water pump pulley reinforcement (Preview) Detailing on my 427 yesterday and I remembered I'd had an issue with the water pump pulley reinforcement not fitting the inside of the pulley. The reinforcement would drop down inside the pulley where it should go ( it sits up against the water pump hub, then the pulley goes on) but there was about .030"...	4SPEED427	7	694	Jun 5, 2022 by LT1Caddy
	Diagram needed (Preview) im looking for a diagram to to put this original 66 396 valve cover gasket Back to together	65 SD L79	6	884	Jun 3, 2022 by cdnpont
	5 inch Moroso alternator under drive pulley (Preview) Anyone ever install one of these? Looking at pics on the Summit website it seems they have no fan? my pulley Im thinking of replacing is a fan and pulley all in one Just looking for any insight or others that have experience with this power saving upgrade? Thanks Greg	SGS Welding	4	641	May 21, 2022 by seventy2plus2
	1965 Pontiac Parisienne Convertible Body Mounts Issue!! (Preview) Evening All. After a few years its time for body mounts. However the full size frame comes with two sizes of body mounts marked as A and B, 7 of each and ABSOLUTLY no one can tell me where or what body position uses the A mount or B mount. This is after long (And I am NOT Joking Here) numerous discussions with e...	Junkyard James	11	963	May 5, 2022 by Junkyard James
	Cast iron starter nose fork (Preview) Never too old to learn. Today I decided to work on getting a spare starter for a big block (or manual trans small block with 11" flywheel) with the cast iron nose. I purchased a nose with the fork recently. I had a couple of used starters here with the aluminum nose, so simple enough, just swap the iron no...	4SPEED427	3	782	Apr 2, 2022 by beaumontguru
	327 396 427 Starter Bolts (Preview) Many of you may know that our 60's GM's had some special starter bolts for the starters that had a cast iron nose. I believe this nose was used exclusively on big blocks and/or small blocks with the 11" clutch (168 tooth flywheel) The original GM number is 3733289 for this bolt and it's not just a plain 3/8...	4SPEED427	14	1110	Apr 1, 2022 by jduffett
	Motor mounts ?? (Preview) I am swapping out a 283 and installing a 0.030 over 402 BBC in my 65 Parisienne. Would the optimum be factory rubber style or aftermarket poly? What parts have others used with success? It will be attached to the original PG (after a redo) or possibly a TH350 if finances allow.	tulobf12	7	1209	Mar 27, 2022 by hawkeye5766

	327 rear main seal question (Preview) does the 327 small and large journal crank use the same rear main seal?	65 SD L79	10	1337	Feb 16, 2022 by 4SPEED427
	Need A Parts Manual Phrase Interpretation (Preview) So, I am looking through the Canadian GM parts manual and I come across a phrase that I'm scratching my head over. Next to the power steering pulley part number it reads: "1969/ALL WITH 396-427 ENGINES T/W FIELD INSTALLED CAR COOLING." What is considered 'car cooling'? In other pulley applications,...	gtodrive	10	936	Jan 24, 2022 by gtodrive
	Anybody into 76 Firebirds (Preview) STREET FEATUREThis Big-Block Pro-Street '76 Pontiac Stands Out In A Crowd! A multi-time World of Wheels winner, this 1976 Firebird was constructed in the early 1980s. Since completion it has only been driven about 200-250 miles and still looks like it's show-ready. This bird is equipped with a C...	oshawacliff	3	1220	Dec 2, 2021 by 65Camino
	Muncie shifter overhaul... (Preview) Is there anyone who overhauls Muncie shifters? Can you install a Hurst shift handle on a Muncie? Answer my own question Duh... Yes someone makes a conversion attachment THX -- Edited by LT1Caddy on Saturday 13th of November 2021 09:48:06 PM	LT1Caddy	5	966	Nov 14, 2021 by LT1Caddy
	Hearing a rattle...hmm. (Preview) On the 65 over the last while, when I've been out driving on the highway at any length of time, at, say 2300 RPM sustained, a rattle at the back starts. Starts quiet, not constant then becomes louder and all the time. Sounds like it's near the right rear tire. Travels right through the body and it's alarmi...	cdnpont	1	858	Nov 10, 2021 by oshawacliff
	1966 L72 427 build (Preview) So I have the 4 bolt block, 858 square port heads, 6223 crank, dimple rods and factory 069 intake. What I have to figure out is what pistons , cam and lifters to go with? Obviously cant go with the factory specs solid lifters and high dome pistons have to be able to drive this thing on todays gas	65 SD L79	9	1246	Nov 9, 2021 by DANO65
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