Edelbrock FM255 vs. FM257

Posted By Florida_Phil 6 Years Ago

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Edelbrock FM255 vs. FM257

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Florida_Phil

Posted 6 Years Ago

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Last Active: 2 Years Ago
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I understand an Edelbrock FM255 intake manifold will mount two Holley 4100's straight. I would like to use two Holley 465s with adapters. I have been told an Edelbrock 257 would require side mounting 4100s. I understand the FM 255 was designed for small port heads. Will a FM255 and two Holley 4100s mounted straight work with 1957 "G" heads on the street. Thanks!

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charliemccraney

Posted 6 Years Ago

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Yep. Aluminum is much easier to work with than iron

Lawrenceville, GA

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Edelbrock FM255 vs. FM257 By Florida_Phil ( 6 Years Ago )

[quote]Will a FM255 and two Holley 4100s mounted straight work with... By KULTULZ ( 6 Years Ago )

Sorry about that. The carbs I want to use are 4160 465 cfm. By Florida_Phil ( 6 Years Ago )

While the 255 has medium ports, it will work and in fact, it was the... By charliemccraney ( 6 Years Ago )

I saw that. Anyone ever tried that combo on the street? By Florida_Phil ( 6 Years Ago )

[quote]The carbs I want to use are 4160[/quote] Here is a photo of... By KULTULZ ( 6 Years Ago )

I think this would be a nice street combo. It has the right look and... By Florida_Phil ( 6 Years Ago )

I have a FM 257 on a 322" Y running two 550 CFM 4160s. Works great on... By Lord Gaga ( 6 Years Ago )

[quote] I'm pretty sure this would fit under the hood of my... By KULTULZ ( 6 Years Ago )

I assume this means I won't be able to use my road draft tube and will... By Florida_Phil ( 6 Years Ago )

Dist. does, not positive about draft tube but I think it will. (My... By Lord Gaga ( 6 Years Ago )

To fit the Edelbrock 573 three deuce manifold on my 292, I had to... By Florida_Phil ( 6 Years Ago )

I like the use of the smaller port manifold because of port velocity... By DryLakesRacer ( 6 Years Ago )

[quote][b]Florida_Phil (10/5/2019)[/b][hr] I assume this means I... By oldcarmark ( 6 Years Ago )

I have read different reports. The H4000 and/or WCFB will not... By KULTULZ ( 6 Years Ago )

[quote]I assume this means I won't be able to use my road draft tube... By KULTULZ ( 6 Years Ago )

[quote][b]Florida_Phil (10/5/2019)[/b][hr]I assume this means I won't... By Ted ( 6 Years Ago )

Great! Thanks. By Florida_Phil ( 6 Years Ago )

Looking at the intakes tested, there seems to be no clear correlation... By charliemccraney ( 6 Years Ago )

Here’s a Y with the Edelbrock ‘255’ dual quad manifold set up with... By Ted ( 6 Years Ago )

No real reason for the road draft tube. My car was stock when I... By Florida_Phil ( 6 Years Ago )

[quote]I assume you could install a PVC with an FM255 intake? In... By KULTULZ ( 6 Years Ago )

[quote][b]Florida_Phil (10/7/2019)[/b][hr]...I assume you could... By Ted ( 6 Years Ago )

There is an FM255 intake on EBay right now for $150.. It's rough and... By Florida_Phil ( 6 Years Ago )

E-Z Fix! By Lord Gaga ( 6 Years Ago )

I run dual Edelbrock 500 carbs on a FM 257 intake using Trans Dapt... By Rono ( 6 Years Ago )

I was too late. It sold this morning. By Florida_Phil ( 6 Years Ago )

Phil. Here's another eBay listing of an Edelbrock FM 255 2x4 intake.... By NoShortcuts ( 6 Years Ago )

Thank you! By Florida_Phil ( 6 Years Ago )

I have some questions for Ted. 1. In the photos you posted above of... By Florida_Phil ( 6 Years Ago )

[quote][b]Florida_Phil (11/18/2019)[/b][hr] I have some questions... By Ted ( 6 Years Ago )

Yep. Aluminum is much easier to work with than iron By charliemccraney ( 6 Years Ago )

Here are pics of the Flathead V8 with the 390cfm Holley carbs.... By Ted ( 6 Years Ago )

Thanks for the reply. Can I successfully run both carbs on the... By Florida_Phil ( 6 Years Ago )

Phil. Having both carburetors' primary throttle plates open together... By NoShortcuts ( 6 Years Ago )

Yes is does. Thanks for the reply. I am waiting for my FM255. It... By Florida_Phil ( 6 Years Ago )

[quote][b]Florida_Phil (11/18/2019)[/b][hr]Thanks for the reply. Can... By Ted ( 6 Years Ago )

Will my stock '57 vacuum advance distributor clear the rear Holley... By Florida_Phil ( 6 Years Ago )

Teds linkage picture is for a passenger car. T Birds have additional... By Oldmics ( 6 Years Ago )

Page 2 of this post shows you pictures to answer your question about... By Joe-JDC ( 6 Years Ago )

The bowl of a 57 tach drive strib sits up a little higher in the... By FORD DEARBORN ( 6 Years Ago )

[quote][b]FORD DEARBORN (11/21/2019)[/b][hr]This is assuming this... By Florida_Phil ( 6 Years Ago )

Ok, not a tach drive strib but sounds like there may still be concerns... By FORD DEARBORN ( 6 Years Ago )

That is exactly what I was thinking. Looking at the current position... By Florida_Phil ( 6 Years Ago )

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