my edmunds 2 carb intake . i got it on here a couple months ago , gonna try to fit it under the hood on my 59 chevy kustom By null By null By null By null
I'll be changing out the home-made headers as the intake will not fit. Will place my Fenton exhaust manifolds and a color change to the block. This '54 261 was built by a retired GM engine machinist, bored out to 280 ci. She ran well even with those pvc spacers that enabled us to test fire the engine!!
Has there ever been a dyno comparison for all the dual carb intakes to see which one is the better performer?
Ok, I am going to ask one more time.....Has there ever been a dyno comparison for all the dual carb intakes to see which one is the better performer?
Not a comprehensive one, at least in recent history. I don't have a copy of it, but there might be one in the Leo Santucci (sp?) book?
I wish someone would have made a single 2 bbl intake for the stovebolts,I want a 2 bbl but not dual one bbls since I have my 235 looking like a 216 and want to retain a stock look.
I have wondered about this too. It looks like it would not be too hard to modify a stock manifold to mount a 2 bbl on. I think a little welding and Bridgeport time would do it.
The main problem with that idea is that the stock heat riser chamber wraps up around the stock 1 bbl. opening and, if you machine the carb opening large enough to accept any sort of 2 bbl, you run into it.
Not to my knowledge, but somewhere I've got a '50s copy of Speed Mechanics that compared an Edmunds, Weiand, and one other intake whose brand I don't remember.
I converted a toyota landcruiser intake to fit the 216/235. It was about a 1/4" or so longer on each end. Cut out a slice and re-welded it together. ground the welds down and no one knows the difference. the owner put a weber on it and ran it his '32 chevy coupe.
Here you go on the 261 I just built and not the first one I made.The work was done with a hand held drill using a rasp bit and a drill press for boring holes.The stock intake throat can be hogged out to about 1-7/8,an adapter made from 1 inch thick phenolic material gradually tapered to match the carb to the intake opening.Not a perfect situation but much better than a funnel shaped typical carburetor adapter.The carb shown is a Rochester 2G with manual choke from a 72 Chevy 350 truck engine.I made one in the past using a 2300 Holley on a stock 261 .This situation made a noticeable in power and better fuel mileage. As mentioned milling out and welding is good if you don't need a heat riser. I posted a series of photos on the HAMB showing the whole procedure. Here's a shot of the home made throttle bellcrank. I also made the headers and hot water heated manifold plate.
No help on the Stovebolts, but there was a version of the 248/270 GMC intake that ran a four bolt base two barrel carb. The hole is oval, not round like a one barrel with a two-bolt base. Later, Kinky6
Very Proud to be the Grandson of one of the pioneers of Chevy and GMC 6 performance. a little about who he was http://www.californiabills.com/t-about.aspx I was lucky enough to have inherited a few of each part he ever built most have never been on a car including some un machined aluminum heads and some examples from a few other makers from the same era. The Problem? I cant stand Chevy or Gmc LOL but I do plan on building a a performance six with all fisher parts in memory of my grandpa. My family still sells all the how too books so check out the site. may learn something.
Come on,it's more fun and challenging to build something 300 bucks for the Clifford intake might be better spent on better fuel air distribution of a 2 or 3 carb intake.
Honestly, a dual carb intake is the best single modification you can make to a 235. Between more fuel/air and more even distribution to the ports, a properly tuned setup delivers both more power and better mileage........but I'd never even consider a dual setup without a dual exhaust system to announce your arrival.
The problem with going to a multiple carb intake on my 37 is I have the 235 looking as much like a stock 216 as I could get including getting a 216 side cover on it so if a old looking 2 bbl could be used I could get a 2 bbl to look like it came on the motor from the factory to the untrained eye,I picked up a Stromberg 2 bbl and will be trying to build a thin adapter to use on a 37 intake and will paint it so it wont show too much. The thought of cutting down a 302 GMC 2 bbl has crossed my mind and might be the way I go if I can find one.
Yeah, I figured you'd be the one to say that.... rube goldberg.... the guy isn't looking for a multi-carb intake, so I didn't see the need to go into it. btw, I find used 4bbl intakes for around $150-200 fairly regular......
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