SOLD - Offy Twin 2bbl. Intake Manifold, 215/ RV8

[roverman]

New, never installed. Pattern is Rochester 2GC. IF your crafty, adapt 2 Webbers/ etc. ? $210.
   10%  of sale price will go to BV8. Contact with BV8 message system.
                                                                            Thanks, Art.

[MGBV8]

Or, adapt a Holley Sniper 2 bbl EFI.

[jjohanski]

Or adapt two Holley Sniper 2 gc type EFI's.  Maybe with progressive, but distribution may be bad.

[MGBV8]

"Or adapt two Holley Sniper 2 gc type EFI's"

It's a 2 bbl manifold, James.

I said adapt a Holley Sniper 2 bbl because I am not sure on the flange mounts.

[roverman]

I think "copies" are available ?  Big Olds joke, after they killed the 215" Jet-fire, they put ONE, 2GC on the 394" V8, in 64, and air cleaner said Jet-fire, What a shame...

[jjohanski]

Carl,  Discription says twin 2 barrel--doesn't that mean 2 twos?  Rochester 2GC Sniper would fit right on with no adapter--that is two of them.  These I believe were for dual 2 barrel rochester.  I do not know if they were progressive or one to one.  I think one to one for distribution.

[Moderator]

I think Offy and Edelbrock have both offered twin 2bbl manifolds for 215.  Kurt Schley's <a href="http://www.britishv8.org/MG/KurtSchley.htm">How-It-Was-Done</a> article reported that he used the Edelbrock version:

Dual Rochester 2-bbl carburetors on Edelbrock manifold. Individual carbs are same as originally supplied on the Buick/Olds 215 low compression 2-bbl engines (except now equipped with .052" main jets and progressive linkage. Choke butterflies removed.)

Unfortunately, I didn't take very good photos of it when I had the chance - at the 1998 BritishV8 meet in Annapolis.

[MGBV8]

"Carl, Description says twin 2 barrel--doesn't that mean 2 twos?"

Yep.

[Richard/SIA]

I may have to buy this if I can get two Weber DCNF 40mm or 42mm to fit.
Need to compare bore spread and bolt patterns.

[Richard/SIA]

Hmm, found some info.
http://www.chevyclassicsclub.com/wp-content/themes/chevyclassicsclub/pdf/tech0213.pdf
There are early and late version 2GC's.
Mounting and bore differs.
Still looking for bore spacing.
Yes, I did find a source of almost reasonably priced DCNF's.

[Richard/SIA]

No. 5262?

[Richard/SIA]

Does this manifold feed four cylinders from each carb, or is the plenum full length so that all eight cylinders pull from both carbs?
A bottom view would probably make this clear but I have not been able to locate one.

[MGBV8]

Does this help?

01-30-2018
Both Offenhauser made dual 2 barrel carb intakes for Rochester 2GC carbs. The Offenhauser was similar to the EquaFlow 360 (single plane open plenum with short runners). The Edelbrock was a dual plane and the casting was surprisingly similar to the Edelbrock Performer Rover but with the dual carb flanges.

Dan Jones

[roverman]

Open plenum, like all of their single plane 215/RV8 manifolds.  Single  bolt pattern.   Art.

[DLCameron2]

WTB Offy Manifold like this one.  Is it still available?

[roverman]

Update, I found it ! It's still for sale.
                                                             Art.

[sblees@comcast.net]

[roverman]

A thing of beauty, looks like it's been welded.      Art.

[DiDueColpi]

Mercury marine has a 2GC that flows around 350cfm. Two of them would bolt on and give you enough for any RV8
Used them a lot in the old 2bbl limited stockcar days. Tunable for almost anything and cost less than a set of Weber jets.

[roverman]

Two 2bbl manifold pictured, must be Edelbrock, as a dual plane ?

[MGBV8]

Definitely Edelbrock.

[roverman]

10% donation to BV8.    Thank You Curtis !

[devonrod]

My Edelbrock twin two barrel on one of my cars, two Weber DGAS on adaptors, fantastic manifold been on the car 38 years, I have a twin two barrel Offenhauser for sale, will be on a well know auction site in the UK this weekend.
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