Photobucket

Canadian Poncho Swag Now Available! CLICK HERE TO VISIT STORE!

 

 

Members Login
Username 
 
Password 
    Remember Me  
Post Info TOPIC: Has anyone installed a dual or triple intake on a 261 in their Pontiac?


Veteran Member

Status: Offline
Posts: 69
Date:
Has anyone installed a dual or triple intake on a 261 in their Pontiac?


Hello again, I am trying to decide between a dual or triple carb intake for my 261 and not completely sure which way to go at this point. I would prefer the tri-power but  I talked to a person at Patricks Antique Cars and was informed of a firewall interference issue with the tri power intake. I had a look for myself and actually set a spare Rochester on the back of my stock single intake where the rear carb would sit and it looked to have about 3" from the back of the carb to the firewall. The only problem that I could forsee is if I was to put power brakes in at any point and needed to install a booster to firewall. Then there might be a space issue. Once again, Thanks in advance, any advice is always appreciated...Steve

__________________


Uber Guru

Status: Offline
Posts: 3916
Date:

Sounds like a neat project. The triple carbs get my vote. Cool factor alone.

__________________


Poncho Master!

Status: Offline
Posts: 2249
Date:

I did a little research into multiple-carb manifolds for our 6's and although I did not keep any notes, unless my memory is wrong, I am pretty sure that you will want to have exhaust heat into the bottom of the intake manifold or fuel will not atomize properly and it won't run right at low rpm's.

Dave

__________________

56Pontiac  1956 Pontiac Pathfinder 2dr sedan, 496 - dyno'd 545 hp, stick shift, 4.11 posi - Hot Rod

  1964 Acadian Beaumont SD convert, 283 - factory 195 hp, Powerglide, 3.08 10-bolt - Cruiser

  2012 US-built crew cab truck - Daily Driver and Boat Trailering



Poncho Master!

Status: Offline
Posts: 1338
Date:

I know the 3 or dual cab setup will look reall good but a small single four barrel will run better and be less trouble. If going with the mulitple carb setup get the BC series Rochester carbs that were originally used on the 261. They have slightly more cfm than the Carters that were used on the 235 six.

Al

__________________


Veteran Member

Status: Offline
Posts: 69
Date:

I am currently running coolant thru the bottom of my stock intake because I already have the Fenton headers and it has run great since day one. The other reason I was leaning towards the triple is because I would run a progressive linkage and for the most part just have the middle carb until higher in the throttle range.

__________________


Canadian Poncho Superstar!

Status: Offline
Posts: 19814
Date:

Here's some motivation.....

tri power 261.jpg

__________________

Ray White, Toronto ON

1973 LeMans 454 "Astro-Jet"

Built March 9, 1973 - Oshawa ON

1993 Corvette Convertible LT 1

Polo green metallic & tan  - Bowling Green Kentucky 






Veteran Member

Status: Offline
Posts: 69
Date:

That is a pretty impressive looking setup. Thanks for posting that pic. Dont know how long I looked on the net yesterday for a picture of a tri-carb install on an inline GM motor. I do like the looks of the Offy intake like the one in that pic compared to the Fenton version that is also still available. I think my engine compartment is going to look a little drab compared to that one though. All the shiny stuff just isn't in this years budget.

__________________


Canadian Poncho Superstar!

Status: Offline
Posts: 19814
Date:

Glad to help, for some reason I'm pretty good at finding things on the web. wink

__________________

Ray White, Toronto ON

1973 LeMans 454 "Astro-Jet"

Built March 9, 1973 - Oshawa ON

1993 Corvette Convertible LT 1

Polo green metallic & tan  - Bowling Green Kentucky 






Uber Guru

Status: Offline
Posts: 3916
Date:

Here is my favorite pic of a 261 with a rare Fisher head with hilborne injection. This head put the intake on one side and the exhaust on the other side. 




IMG6664.jpg

__________________


Uber Guru

Status: Offline
Posts: 3916
Date:

Here is another pic of it.




IMG6663.jpg

__________________


Newbie

Status: Offline
Posts: 2
Date:

Contact inliners.com they sell dual and triple intakes and adapters for more modern 2 throat ford type carberators. Intakes for 235and 261 are the same. Summit racing and Speedway also sell the intakes; Inliners would be your best bet. Have used thier system on my 53 Chev 235 engine.

Attachments
__________________


Uber Guru

Status: Offline
Posts: 3916
Date:

Thats a nice looking engine poncho1, Got a soft spot for 53 chevy's, got any more pics.

__________________


Veteran Member

Status: Offline
Posts: 69
Date:

Thanks Poncho1, I ended up ordering from a Hot Rod shop here in BC. They get them from Speedway Motors. Your motor does look good. Are those the new carbs that you are running? I will need to be finding the shortest carbs I can since I ordered the tri-power manifold and I want to squeeze this under the hood without adding a scoop.

__________________


Member

Status: Offline
Posts: 21
Date:

I had a tripple set up on my 58 Pathfinder, but was never realy happy with the performance of the change. I have now changes to an adapter with a 2bl and a stock air cleaner that I modified to house a round K&N air  filter. The 2bl has been an awsome improvement !

__________________
Page 1 of 1  sorted by
 
Quick Reply

Please log in to post quick replies.

Tweet this page Post to Digg Post to Del.icio.us
.
Support Canadian Poncho!
Select Amount:
<
.
.
.