Need Input
Thread Starter
Burning Brakes
Joined: Feb 2005
Posts: 894
Likes: 91
Need Input
Looking for any info on an intake manifold for a BBC.
This is a "square-port" setup, single 4 brl., and set up to accept a 4500 carb!
Has "Winters" snowflake, G.M. part #3963647, with a mid-'66 casting date.
Thanks, Gary in N.Y.
P.S. This piece has been heavily modified and MAY have been done by G.M.?
This is a "square-port" setup, single 4 brl., and set up to accept a 4500 carb!
Has "Winters" snowflake, G.M. part #3963647, with a mid-'66 casting date.
Thanks, Gary in N.Y.
P.S. This piece has been heavily modified and MAY have been done by G.M.?
Thread Starter
Burning Brakes
Joined: Feb 2005
Posts: 894
Likes: 91
BBC Intae?
Hi Jim, after doing some "measuring" it turns out a Q-Jet had been adapted, probably some sort of "cheater" in some class racing.
Just took the dimensions and it's definitely NOT a 4500 nor does it like like any factory mod!
My son just dropped it off by me, I didn't get a close up look earlier, now I see what was done.
Thanks, Gary in N.Y.
P.S. Still would like to I.D. original application, can't identify that part number (3963647)!! In the photo, the lower right corner has the casting number super-imposed!
Just took the dimensions and it's definitely NOT a 4500 nor does it like like any factory mod!
My son just dropped it off by me, I didn't get a close up look earlier, now I see what was done.
Thanks, Gary in N.Y.
P.S. Still would like to I.D. original application, can't identify that part number (3963647)!! In the photo, the lower right corner has the casting number super-imposed!
Drifting
Joined: Jul 2005
Posts: 1,977
Likes: 194
From: Putnam Valley, New York. Amateur Radio Operator K2NS
Not 1966
It's not a 1966 casting, as there are no tapped holes in the coolant runner at the front of the manifold. There are 2 untapped bosses. GM started putting the temperature gauge sending units in the cylinder heads with the 1968 models. I would suspect that the manifold is a service part cast in 1976 possibly for a 454. The service part probably had a completely different part number than the OEM unit it replaced. What is the casting date---you never gave it.
RON
Thread Starter
Burning Brakes
Joined: Feb 2005
Posts: 894
Likes: 91
BBC Intake
It's not a 1966 casting, as there are no tapped holes in the coolant runner at the front of the manifold. There are 2 untapped bosses. GM started putting the temperature gauge sending units in the cylinder heads with the 1968 models. I would suspect that the manifold is a service part cast in 1976 possibly for a 454. The service part probably had a completely different part number than the OEM unit it replaced. What is the casting date---you never gave it.
RON
The only piece I have here now to compare it to is an intake from a '69 Yenko resto (#3933163) with a date on the underside of 05 11 9. The same numbers on the bottom of the 3963647 is 7 11 6. I would have to assume this is the date!
Thanks, Gary in N.Y.
P.S. It's most definitely a "high-rise" style intake, not the later "pancake" type!
Le Mans Master
Joined: Jul 2000
Posts: 8,506
Likes: 3
From: Calhoun, GA_______ Let It Rock
Here is one that I brought home back in the early 80's from the junk yard. It is a 9-27-65 dated square port. Kicking myself for not bringing more home and stashing them back then 
And wondering what I left there to be crushed. 
And wondering what I left there to be crushed.
Race Director
Joined: Jan 2000
Posts: 13,018
Likes: 2,262
From: Corsicana, Tx
2020 C2 of the Year - Modified Winner
2020 Corvette of the Year (performance mods)
C2 of Year Winner (performance mods) 2019
2017 C2 of Year Finalist
Well that's pretty interesting. Someone sure had their way with that one!
Maybe it is an LS-6 crate intake from the 70's/80's?
JIM
Maybe it is an LS-6 crate intake from the 70's/80's?
JIM
Melting Slicks
Joined: Aug 2000
Posts: 2,767
Likes: 1
From: Spring Branch Texas
intake
Hi Jim, after doing some "measuring" it turns out a Q-Jet had been adapted, probably some sort of "cheater" in some class racing.
Just took the dimensions and it's definitely NOT a 4500 nor does it like like any factory mod!
My son just dropped it off by me, I didn't get a close up look earlier, now I see what was done.
Thanks, Gary in N.Y.
P.S. Still would like to I.D. original application, can't identify that part number (3963647)!! In the photo, the lower right corner has the casting number super-imposed!
I have the exact manifold, only the plenum has not been cut out, has only one set of carb stud holes, and it is dated 7 16 69.
I sent this info and photos to Joe Lucia (NCRS numbers/parts wizzard) a few years ago, and he could not identify it.
?????
George
Just took the dimensions and it's definitely NOT a 4500 nor does it like like any factory mod!
My son just dropped it off by me, I didn't get a close up look earlier, now I see what was done.
Thanks, Gary in N.Y.
P.S. Still would like to I.D. original application, can't identify that part number (3963647)!! In the photo, the lower right corner has the casting number super-imposed!
I have the exact manifold, only the plenum has not been cut out, has only one set of carb stud holes, and it is dated 7 16 69.
I sent this info and photos to Joe Lucia (NCRS numbers/parts wizzard) a few years ago, and he could not identify it.
?????
George
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Race Director
Joined: Jan 2000
Posts: 13,018
Likes: 2,262
From: Corsicana, Tx
2020 C2 of the Year - Modified Winner
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Marine ones usually have the brass insert in the water neck and crossover areas.
JIM
JIM
