Technical Hello to all and help required to id Chevy 327 intake manifold

Hello to all on this forum and seasons greetings to you. I have on many occasions been lead back to the HAMB when researching cars and components of the golden period, but I have now joined up as I need some help in identifying an intake manifold I have for fitting on a Chevy 327. When visiting the US I always try and fit it around a couple of weekends of nostalgic drag races around the South and love to see the early cars competing, as well as the original classes for '50's and '60's sedans, while in the UK I have attended the VHRA event at Pendine Sands.
However, back to my current problem and apologies if this is not deemed to fit comfortably here, but I throw myself on your mercy and vastly superior knowledge of speed parts, as I a m at a loss! I have attached a couple of pictures and would love to know anything about this multi-component manifold suitable for fitting 4 x twin-choke Weber 48 IDA Carburettors to a Chevy 327. It bears a logo, as you will see in one of the photos, either a "w", or an "m". Otherwise it has no markings, but is a lovely thing. All leads will be rewarded in heaven!

 

hands down the politest post this month.....let's see how many min's til the winner!

 

winters foundry snowflake? cool intake, hope someone knows what ya got....

 

The W surrounded with the "snowflake" is a Winters Foundry logo, they did all of (I think) the aluminum hi-perf intake manifolds for Chevrolet. Never seen this one that I recall, it may have been for the Corvette GrandSport racing program in the early 60's, pretty valuable if that is what it is.
That cast-in breather is a bit odd.
There may be a date cast into it, the other Chevy manifolds have it, it's underneath the tin oil splash shield on the bottom side of the intake.

 

I think the same^^^^^^^^^ Probably pretty rare, and worth some change$

 

Welcome aboard! Didn't McLaren and some other teams use Chevys in some kind of Formula and GT racing series? Not sure what teams used them, but I think I read the winters foundry did some special hiperf parts for GM.

 

Yep Winters Foundry tool mark & what Denny said. Interesting to see if someone can shed some light on this one. Not production, that's for sure.

 

Sorry, I just googled. ... the McLaren M8 had injected aluminum BBCs with 427 cui or more. ..but still the aluminum parts came from Winters. ..

 

i had a manifold like that once,mine was a Moon and took weber carbs.
I got a lot of money for it too,about 30 years ago.

 

I have never seen one but that is sure one pretty piece. I bet it's as rare as hens teeth. I've seen the snow flake on chevy alum heads and intakes. I look forward to finding out what this was on.

 

Could be out of something older, maybe a McLaren Chevrolet M10B or so,..they used small Chevs. I could not find a good enough engine pic on the web ...

 

It resembles the Grand Sport intake but definately different than the one here:
https://www.corvetteonline.com/feat...grand-sport-one-of-the-rarest-corvettes-ever/

Here is another related HAMB thread:
https://www.jalopyjournal.com/forum/threads/need-help-sbc-injection-intake-identification.442768/

If a casting number is found and there is 00 in it then that would mean a factory prototype.

 

This is interesting!!! I think in this case that snow flake is a translation for $ sign's!... Seriously Kool piece rite-Cheer!

 

I think this Lola T70 has a manifold on it which is looking pretty similar to yours...
https://www.google.com/search?q=lol...0#imgdii=LhToYmxB_hNVJM:&imgrc=Y4MNdzx-sKLjKM:

 

Looks like the lower intake for early Rochester FI system except for that stand-off and downdraft Weber adaptors. The OEM upper plenum wouldn't fit with the stand-off though

 

http://www.burgolracing.ch/catalogue/img_art/a378/_img2/lola-t-70-sl-119.jpg

 

It does resemble the lower casting of the C2 Rochester fuel injection intake, still not the same.
Many photos here:
https://www.google.com/search?biw=1.........0....1.rae2DSKBHlo#imgrc=o-QL0sAVz3OmUM:

 

Stumpy types faster than I do.

 

Sure looks like a 61-62 FI base plate except for the standoff/riser thing. Saw a similar one some years ago with cast adapters that used 2 bbl carbs but had balance tubes between the adapters

 

It might be this 1963 Jim Hall Chaparral engine that was featured in 1963 Hot Rod Magazine. Here is another link check out the picture. http://www.grandprixhistory.org/chap_2e.htm

 

Try the corvetteforum.com C1- C2 section, there are some racing guys there with a LOT of knowledge.

 

Jeff, the early can-am cars were my first thought. Did they have any factory support, even backdoor?

 

From post #20 link...

 

I say factory fuel injection lower intake with a set of aftermarket cast adapters....

 

I am with stumpy & Deuces, looks like it was heavily milled, center top, breather looks bolt on not cast with manifold.................................

 

Looks that way to me too, the adapters don't have the quality of the typical Winters casting. Also, the valley portion has been milled flat in two areas, one for the tall breather and you can see one of the holes drilled in the base of the breather to bolt it down. The other flat has what look to be 1/4-20 holes probably for a throttle bellcrank.

brigrat was quick on the draw!

 

What would be handy is if the OP would check back in with more photos, preferrably closeups hint, hint.

 

man you guy's are sharp !.......

 

This will enlighten you a bit, Zora Duntov got a bit of a push from the Boss so yeah I'd say there was "back door support" these manifolds were probably modified by Chevy in house based on the value these cars sold for this intake would go for high bucks if it could be authenticated by one of these collectors. http://www.superchevy.com/features/1606-day-corvette-grand-sports-stomped-the-cobras/

 

I agree it looks like a Corvette Rochester injection base plate with some adapter castings to fit the Webers. Does the breather standoff look like it was welded on and dressed nicely? or was it cast with the baseplate? More pictures please, that's a mighty cool intake!