65-70 Full Size Power Train Tech Forum

4SPEED427 · 4SPEED427

https://www.summitracing.com/parts/ado-d3968a Anyone ever heard of these, or had one? Kind of embarrassing who spanned 40 years in GM parts to admit he's never heard of these, but I've never heard of these. I was piddling around on the AC Delco site to see what all they had listed for my car and this...

65 SD L79 · 65 SD L79

I wanted to put a nice new shiny exhaust system on the 396 car so I ordered a system off eBay. I picked it up in Ohio on my way to the car show. After seeing it I figured I would use it on the L72 car -- Edited by 70 SS ACADIAN on Monday 8th of August 2022 08:27:53 PM

1965CS · 1965CS

Yet another incident that I cannot explain, hoping someone here can. Rocker tension seemed ok, can tell in the images that the nuts are not loose. Replaced the bent rods, replaced the rockers with roller type, then the other side did this:

gord · gord

Would anybody happen to know anything about these numbers on my 396 block? 3955272. P. Gm4. B25-9

LandShark68_2+2 · LandShark68_2+2

Hi guys, I recently installed a new carb on the 68 2+2 and I am wondering what this rubber hose is for, coming out of the bottom of the breather. Does it attach to the carb somewhere or does it just dangle ? Regards, Scott (LandShark ...)

koolconvertible · koolconvertible

Hi all, so the F40 RPO all our aussie cars got is for heavy duty front and rear suspension. I know that means 4 link and possible shockie ratings but what is the difference for front suspension over standard? Just shockie ratings? cheers all.

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.

Topic		Started By	Replies	Views	Last Post
	Delco electronic ignition conversion kit (Preview) https://www.summitracing.com/parts/ado-d3968a Anyone ever heard of these, or had one? Kind of embarrassing who spanned 40 years in GM parts to admit he's never heard of these, but I've never heard of these. I was piddling around on the AC Delco site to see what all they had listed for my car and this...	4SPEED427	11	1557	Aug 18, 2022 by unruhjonny
	66 B body exhaust system (Preview) I wanted to put a nice new shiny exhaust system on the 396 car so I ordered a system off eBay. I picked it up in Ohio on my way to the car show. After seeing it I figured I would use it on the L72 car -- Edited by 70 SS ACADIAN on Monday 8th of August 2022 08:27:53 PM	65 SD L79	15	1321	Aug 11, 2022 by Canadian Poncho
	Rocker-lifter issue (Preview) Yet another incident that I cannot explain, hoping someone here can. Rocker tension seemed ok, can tell in the images that the nuts are not loose. Replaced the bent rods, replaced the rockers with roller type, then the other side did this:	1965CS	12	1536	Jul 21, 2022 by 1965CS
	Motor (Preview) Would anybody happen to know anything about these numbers on my 396 block? 3955272. P. Gm4. B25-9	gord	4	1152	Jul 20, 2022 by 694279
	What's this rubber hose for ? (Preview) Hi guys, I recently installed a new carb on the 68 2+2 and I am wondering what this rubber hose is for, coming out of the bottom of the breather. Does it attach to the carb somewhere or does it just dangle ? Regards, Scott (LandShark ...)	LandShark68_2+2	19	1639	Jul 20, 2022 by MC
	F40 heavy duty suspension RPO (Preview) Hi all, so the F40 RPO all our aussie cars got is for heavy duty front and rear suspension. I know that means 4 link and possible shockie ratings but what is the difference for front suspension over standard? Just shockie ratings? cheers all.	koolconvertible	16	1531	Jul 13, 2022 by Canadian Poncho
	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	4288	Jul 8, 2022 by 4SPEED427
Nov 18 to Dec 2 Black Friday UP TO 50% OFF Plus Huge Coupons
	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	2089	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	1361	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	1351	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	1252	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	1944	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	870	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	815	Jun 5, 2022 by LT1Caddy
Nov 18 to Dec 2 Black Friday UP TO 50% OFF Plus Huge Coupons
	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	1196	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	832	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	1073	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	903	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	1327	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	1453	Mar 27, 2022 by hawkeye5766
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