what are the correct exhaust manifolds? Number? Shape? I kind of remember someone saying one side (driver?) was straight down and the other angled back.
Both angle back. Lots of guys use a straight down on the right side because it's easy to find and the proper angle back for the right side is hard to find. I'll look for pictures of the correct ones.
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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles
1966 Grande Parisienne, 396 1 of 23 factory air cars
Notice that one end bolt on each manifold has a very thin casting for the bolt hole. I believe only the Nova manifold has that. There's a few different casting numbers but if you google Nova 283 or Nova 327 manifold you'll be able to find them all.
Both angle back. Lots of guys use a straight down on the right side because it's easy to find and the proper angle back for the right side is hard to find. I'll look for pictures of the correct ones.
SOME GUYS HAVE USED 67 --72 TRUCK MANIFOLDS
THE LEFT ONE TURNS BACK, NOT EXACTLY LIKE ORIGINAL , BUT IT WILL WORK
NOT SURE IF IT HAS THE ALT. BRACKET MOUNTING HOLES.
-- Edited by OURWAGON on Sunday 21st of January 2024 09:59:34 PM
The right side will work fine but it doesn't have that thin bolt flange on the end, no big deal.
However, the left side is angled as it should be which is great but as OURWAGON stated, if you want to use the stock alternator brackets from the Acadian you will be out of luck.
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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles
1966 Grande Parisienne, 396 1 of 23 factory air cars
There was a place that did extrude honing on exhaust manifolds that I am trying to remember.
Ah yes, Brzezinski Racing Products.
They used to sell prepped exhaust manifolds for class racing where headers were not allowed.
Straight extrude honing may or may not yield dramatic results, but a talented honing artist with a dingleball might do even better.
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67 Chevelle Malibu Sport Coupe, Oshawa-built 250 PG never disturbed.
In garage, 296 cid inline six & TH350...
Cam, Toronto.
I don't judge a man by how far he's fallen, but by how far back he bounces - Patton
Boy, it's been a while since I've worked on these! If I had to guess I'd say the upper alternator brace/bracket/arm was almost flat and bolted to either the front of the intake or the upper water pump bolt on the driver's side. I'll see if I can find a parts picture.
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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles
1966 Grande Parisienne, 396 1 of 23 factory air cars
Dug this up if it works. Yours for contribution to the site and postage. Jim
Nice work Jim!
HAAAA....Knew I had it..took James (my son) and I 2 days to find it..... Found the aftermarket one in 5 minutes!
Not sure that is aftermarket , looks like the one from my 59 & 62 283/327 generators. They bolt to the exhaust manifold, maybe even on later alternators.
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63 Parisienne sport coupe (The Big GTO), black, maroon interior, 409 4 speed; former owner of a 59 El Camino, 63 Corvette SWC, 62 Chev Bel Air SC. 1963- Pontiac top selling car in Canada
Mahone Bay, NS Still not old enough to need an automatic
Dug this up if it works. Yours for contribution to the site and postage. Jim
Nice work Jim!
HAAAA....Knew I had it..took James (my son) and I 2 days to find it..... Found the aftermarket one in 5 minutes!
Not sure that is aftermarket , looks like the one from my 59 & 62 283/327 generators. They bolt to the exhaust manifold, maybe even on later alternators.
Thinking genny would have a rear mount support as they are long and only have a front and rear tab.
-- Edited by hawkeye5766 on Friday 26th of January 2024 02:02:58 AM
You are correct, I was remembering my 63 alternator bracket on the 409 and 327.
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63 Parisienne sport coupe (The Big GTO), black, maroon interior, 409 4 speed; former owner of a 59 El Camino, 63 Corvette SWC, 62 Chev Bel Air SC. 1963- Pontiac top selling car in Canada
Mahone Bay, NS Still not old enough to need an automatic
