tri carburetor set up

F

ford1948f1

Member
Hi everyone, I want some advice. I have 3 carburetor, 2 Stromberg 97 and 1 Holley 94, I want to put the 94 in the middle and 97s on the ends. Am I going to have any issues with this set up? thanks in advance Steven.
 
I'm assuming you are using progressive linkage? The 94 is slightly larger (cfm wise) than the 97's so should work fine as the primary. The 94 can be modified for ported vacuum to use with a later distributor if needed whereas a Stromberg cannot (easily)
 
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I do have trips but all Stromberg. But even tho you are using a Holley for your primary I don't think there will be a problem as long as everything is jetted correctly, of coarse.

9495881349_8477cba761.jpg
 
Y-Blockhead said:
I'm assuming you are using progressive linkage? The 94 is slightly larger (cfm wise) than the 97's so should work fine as the primary. The 94 can be modified for ported vacuum to use with a later distributor if needed whereas a Stromberg cannot (easily)
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Y-Blockhead, do you know if the newly reproduced Stromberg 97's have larger venturi's to flow more air comparable to the mid 50's Holley's (1 1/16" carbs) ? I know it's more truly nostalgic to use the 97's in hot rods since they were the original ones used back in the day, but would be nice if they could have the true old school look along with more air and power too.
Sal Cicala
 
Believe me I'm not an expert but I've been told that the new and old 97's flow about the same, 155-162cfm, depending on who you talk to.

I came across an article about 97's a while back and this is a quote from that;
"Our own flow test results put the new Genuine 97 at 162cfm. A Speedway carb made 154cfm. And (to avoid any bias) the Barry Grant 98 made 162cfm too. All measured at 1.5inHg."

So with that said I figure when the three 97's on my 312" are WFO it's flowing ~500cfm which is about the same as the 500 cfm Edelbrock I also have for the same engine.

FYI The new Edelbrock 94 is rated a 160cfm. Don't recall what the original 94's were rated at.

I'm sure someone on here can tell you more.
 
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Those 3 will work fine as a group running together BUT, you must remember that a 97 pulls from the top and a 94 pulls from the bottom. Very easy to fab progressive linkage. When you get by that you are good to go. Go for it.
 
Y-Blockhead said:
Believe me I'm not an expert but I've been told that the new and old 97's flow about the same, 155-162cfm, depending on who you talk to.

I came across an article about 97's a while back and this is a quote from that;
"Our own flow test results put the new Genuine 97 at 162cfm. A Speedway carb made 154cfm. And (to avoid any bias) the Barry Grant 98 made 162cfm too. All measured at 1.5inHg."

So with that said I figure when the three 97's on my 312" are WFO it's flowing ~500cfm which is about the same as the 500 cfm Edelbrock I also have for the same engine.

FYI The new Edelbrock 94 is rated a 160cfm. Don't recall what the original 94's were rated at.

I'm sure someone on here can tell you more.
Click to expand...


Well, it sounds like when they reproduced the 97's they made them the same in air flow too. A total of 500 CFM at WFO as you put it, should be plenty for a Y-Block with a mild cam and a maybe 9 or 10:1 compression.
So three 1 1/16" Holleys may be slightly overkill for the same engine, but better for a hotter Y-Block. Thanks for all of the info.
 
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