aaronz28

looking for a factory (winters foundry) aluminum intake
oval port - either spread or square

what would it have been used on and/or part number?

i don't want aftermarket intake and i'm not crazy about using the rect port L72 style intake on oval port heads - unless someone can convince me that it works without issue

cheers

Nowhere Man

I'm sure there was one in 68 or 69

aaronz28

a quick ebay search showed the 68-69 390hp 427 engines were oval port, aluminum q-jet intakes.

so thats the ticket

provette67

There are three that I know of Part #3919849 #3937793 #3947801

aaronz28

those are all for qjet right?

JRRHINO

68

DZAUTO

Yep, 68-69 ONLY, and yes, they were all Q-jet.
There was a time when they could be had dirt cheap----------------------and now you can't hardly buy one!

DansYellow66

FWIW - From reports I've heard more than once, the rectangular port L72 manifold works very well bolted to the oval port heads.

BADBIRDCAGE

You are correct. You just need to use the square port gaskets.

ALSO the 400 hp tri-power intake was oval port.

BADBIRDCAGE

Absolutely works without issue. You can't run the oval port manifold on square port heads but you can run the square port intake on oval port heads. Just use the square port intake gaskets. I did this years ago.

409/409

68/69 aluminum intakes are Q-jet low rise. 66/67 are cast iron,but high rise like 66/67 square port aluminum. I have an L-72 intake and carburetor on pocket ported 390 heads with no issues. I wanted the L-72 look. It runs much better than the 390 intake and carburetor.

JRRHINO

The 69s I have seen have cast iron, maybe the early ones had aluminum?

409/409

You are correct. 68/69 are low rise cast iron Q-jet. Excluding tri-power.

DZAUTO

This is correct!
For many years (old wives tale I presume) it was emphatically stated that a rectangle port (some of you call it square port) intake would not work well on oval port heads because of the flow reversion effect which occurs. I don't know so much about on Corvette engines, but in the BB Chevelle world (which I am heavily into), MANY of the guys have run rectangular port intakes on oval port heads with excellent success.
Additionally, one of my Chevelle friends contoured the roof of his oval port heads (NO, I didn't think to take a picture) so that it more closely mated to the rectangular port intake and he said it seemed to help.
Also, there is a LOT more room for a tall manifold under the hood of a Chevelle than under the hood of a Vette.
And, to intentionally **** off everyone here, in my opinion a BB Chevelle is much cooler than a Vette any day (well, except for a 57 Airbox car).

GOSFAST

Over the years we've worked with a number of the alum oval intakes from the Vette.

The part number above is correct, 3947801. They are a "Winters" casting, you can see the snowflake in the photo below.

Thanks, Gary in N.Y.

P.S. On the right platform, a 100% stock-appearing build, they are capable of handling 500/525 HP with no porting. Here's 2 shots, one of the top and one of the bottom.

still cruzin

"And, to intentionally **** off everyone here, in my opinion a BB Chevelle is much cooler than a Vette any day (well, except for a 57 Airbox car)." DZAUTO

HMMM! I guess your safe behind your keyboard.

Bob:

Nowhere Man

Not sure if shoud add any thing or not

[URL=http://smg.photobucket.com/user/keithbrodbeck/media/Mobile%20Uploads/IMG_0647_zpss1o11sag.jpg.html][/URL

Dr L-88

I've used this combo more than once, with excellent results, particularly on a street engine.

Rex

DZAUTO

Keith,
That is one nice looking 66 SS396!!! It would look right at home next to our 70 conv.

426 Hemi

Long live the DogDish