Rochester 2GC info - Page 4

John Beasaw III · 09-30-2015, 12:11 AM

Does anyone run a 2gc combo in super stock? I was looking at it as an option for both stock and super stock, I just have no clue where to start looking for info on how to make a 2gc work in either configuration.

I would be N/SA or SS/MA, in my 70 chevelle.

Hate the off season, ideas run rampant. Lol...

NORMAN BARNARD · 09-30-2015, 12:34 AM

John, there's plent of guy's on here that will share the info. With you. You didn't say what the engine spec's were!!!!

I see where your from upstate new york just east of rochester.
I'm also from upstate called batavia, about half way between
rochester and buffalo .

If i can be of help, just send me a pm......good luck.....norm

MikeMoller · 09-30-2015, 10:42 AM

I'm no expert, but I found this interesting link for 2GC info - Hot Rod Magazine article

http://www.hotrod.com/how-to/engine/...g-carburetors/

Dwight Southerland · 09-30-2015, 12:47 PM

I believe Mike Town runs one in SSGT.

T Ketels · 09-30-2015, 12:58 PM

Quote:

Originally Posted by Dwight Southerland

I believe Mike Town runs one in SSGT.

Along with Jeff Town, Tony Shaffer and myself. There are probably others out there as well.

Tim

Mark Yacavone · 09-30-2015, 03:02 PM

Quote:

Originally Posted by MikeMoller

I'm no expert, but I found this interesting link for 2GC info - Hot Rod Magazine article

http://www.hotrod.com/how-to/engine/...g-carburetors/

As stated in the article, the 1.250 venturi can be bored out to the 1.375 configuration, without going through the casting.
Not S/SS legal of course, but could be used as a test carb to get you started.

NORMAN BARNARD · 09-30-2015, 04:25 PM

Mark, why is it not legal to perform that process? I didn't think tech. Was looking for the part number any more, if the factory
defined carb. (roch.) meets the dimensional specifications indicated by nhra in the engine specifications for the combination
your running your good !!!!!

Good rochester cores are getting hard to find and the law of supply and demand willkeep the price too high for the sportsman. The flip side of this is maybe nhra needs to consider allowing the mercury marine carb. As a replacement as it meets the large bore rochester dimensions, doesn't require the necessary machining like the roch. To be competative along with
other things.

Just my 2-cent's for today.......norm

Mark Yacavone · 09-30-2015, 06:00 PM

Norm, It is illegal because it leaves machine marks and takes away the anodizing.
That being said, a grungy old core that was dipped in acid to clean it, wouldn't have any anodizing left, if you follow me.
Remember..Any machine marks or sanding scratches visible, and yer out!

I'm not familiar with the Mercury Marine carb.Made by who?
Link? Pic?

T Ketels · 09-30-2015, 07:08 PM

Here's a couple of pictures of the marine 2G - it measures 1.375 but it has sleeves in each bore. I've never built one to try yet - one of these days.

Tim

NORMAN BARNARD · 09-30-2015, 07:08 PM

Mark....you have a pm.....

09-30-2015, 12:11 AM	#31
John Beasaw III Member Join Date: Jan 2002 Location: Marion, N.Y. Posts: 126 Likes: 0 Liked 2 Times in 2 Posts	Re: Rochester 2GC info Does anyone run a 2gc combo in super stock? I was looking at it as an option for both stock and super stock, I just have no clue where to start looking for info on how to make a 2gc work in either configuration. I would be N/SA or SS/MA, in my 70 chevelle. Hate the off season, ideas run rampant. Lol...

09-30-2015, 12:34 AM	#32
NORMAN BARNARD Member Join Date: Mar 2006 Location: EL PASO, TEXAS Posts: 156 Likes: 0 Liked 2 Times in 2 Posts	Re: Rochester 2GC info John, there's plent of guy's on here that will share the info. With you. You didn't say what the engine spec's were!!!! I see where your from upstate new york just east of rochester. I'm also from upstate called batavia, about half way between rochester and buffalo . If i can be of help, just send me a pm......good luck.....norm

09-30-2015, 10:42 AM	#33
MikeMoller Senior Member Join Date: May 2010 Location: Raleigh NC Posts: 626 Likes: 27 Liked 242 Times in 72 Posts	Re: Rochester 2GC info I'm no expert, but I found this interesting link for 2GC info - Hot Rod Magazine article http://www.hotrod.com/how-to/engine/...g-carburetors/ __________________ Mike Moller NHRA 203 Q-R-T/SA Last edited by MikeMoller; 09-30-2015 at 10:48 AM.

09-30-2015, 12:47 PM	#34
Dwight Southerland VIP Member Join Date: Dec 2001 Location: Arkansas - In the middle of everything. Posts: 1,980 Likes: 53 Liked 724 Times in 177 Posts	Re: Rochester 2GC info I believe Mike Town runs one in SSGT. __________________

09-30-2015, 04:25 PM	#37
NORMAN BARNARD Member Join Date: Mar 2006 Location: EL PASO, TEXAS Posts: 156 Likes: 0 Liked 2 Times in 2 Posts	Re: Rochester 2GC info Mark, why is it not legal to perform that process? I didn't think tech. Was looking for the part number any more, if the factory defined carb. (roch.) meets the dimensional specifications indicated by nhra in the engine specifications for the combination your running your good !!!!! Good rochester cores are getting hard to find and the law of supply and demand willkeep the price too high for the sportsman. The flip side of this is maybe nhra needs to consider allowing the mercury marine carb. As a replacement as it meets the large bore rochester dimensions, doesn't require the necessary machining like the roch. To be competative along with other things. Just my 2-cent's for today.......norm

09-30-2015, 06:00 PM	#38
Mark Yacavone Veteran Member Join Date: Mar 2002 Location: Miles From Nowhere Posts: 7,417 Likes: 2,582 Liked 4,453 Times in 1,694 Posts	Re: Rochester 2GC info Norm, It is illegal because it leaves machine marks and takes away the anodizing. That being said, a grungy old core that was dipped in acid to clean it, wouldn't have any anodizing left, if you follow me. Remember..Any machine marks or sanding scratches visible, and yer out! I'm not familiar with the Mercury Marine carb.Made by who? Link? Pic? __________________ We are lucky we don't get as much Government as we pay for..... Will Rogers

09-30-2015, 07:08 PM	#39
T Ketels Junior Member Join Date: Jul 2005 Location: Dyersville, Iowa Posts: 52 Likes: 0 Liked 0 Times in 0 Posts	Re: Rochester 2GC info Here's a couple of pictures of the marine 2G - it measures 1.375 but it has sleeves in each bore. I've never built one to try yet - one of these days. Tim Attached Thumbnails __________________ SS/MA 5017

09-30-2015, 07:08 PM	#40
NORMAN BARNARD Member Join Date: Mar 2006 Location: EL PASO, TEXAS Posts: 156 Likes: 0 Liked 2 Times in 2 Posts	Re: Rochester 2GC info Mark....you have a pm.....