Holley 4160 Marine Carburetor on road going 440?

[DamianC]

Hi guys.

I am steadily working through a '71 Challenger partial resto. It's a solid running car, with a 440 Auto. The 600 CFM 4160 Holley needs a rebuild - it leaks gas here and there. The list numbers are 9834-1 with a date code of 2919. Looking this up online it says it needs rebuild kit #37.720 as it is a 'Marine carb'. It seems to run fine, the engine has been rebuilt at some point in the past and runs very well, although I have yet to get it on the road since buying it and really see how it performs. Question. 'Marine carb' is good for road application? I can't see why not. What is the difference between the road/marine variants of the 4160?  Thanks.

[1 Wild R/T]

A marine carb has a CG (Coast Guard) certification number.... Other than that not much difference..

[DeathProofCuda]

this is from the Holley website:

"All Holley Marine Carburetors are designed to meet Coast Guard specifications. A marine carburetors fuel metering system is calibrated to compensate for unique engine loads found on boats. The J-style vent tubes direct fuel/fumes back into the carburetor for safe operation while on rough waters."

Seems like it could work, but might need some tinkering with the fuel metering system to maximize its performance for a street car.

[Chryco Psycho]

I was going to say that usually the bowl vents are different but it should work fine with some tuning . The biggest issue is the CFM , 600 CFM on a 440 is like running a 2 bbl !!
Welcome to the site from Panama BTW 

[DeathProofCuda]

The biggest issue is the CFM , 600 CFM on a 440 is like running a 2 bbl !!

Good point!

[JS29]

The biggest issue is the CFM , 600 CFM on a 440 is like running a 2 bbl !!

Good point!    Fuel starvation, It may even run hotter like that!   

[DamianC]

Thanks very much for your input guys. Interesting to read that a 600CFM carb is probably a bit anemic for a 440. I don't have any detail on the rebuild the engine has had, as it was done a few years ago for sure.  I do know the heads are 2780915-1 1967 2.08/1.74 HP. It's a 69 Block. The cam may be stock, I don't know, and it has new rods and pistons. The intake isn't stock, it's a Weiand 7512 - see pic. The Carb is pretty old, and I was thinking of replacing with new, so ......... . What would be a better choice of carb CFM?

If anyone is interested here's a link to a gallery of the work I have done so far.

https://photos.google.com/share/AF1QipNJ93yrENSW1kXcBQk8kJMmbcThgImMy_XmiRF0jaQXRLny6eOKJ3MpY5Th2XkSOg?key=dXdvV0g3MFlqRy1lYTFuT3JVNU4zOGZkT2d2R3hR

Thanks guys.

[Chryco Psycho]

I would recommend double the CI s @ around 850 & Proform is the best bang for $$ , Mancini has the best pricing typically or used to
Keep in mind the factory carb for the 440 was 800 cfm Tq

[Chryco Psycho]

Impressive !! You have completed a ton of metal work on the Chall !!

[JS29]

I have a 750-dp quick fuel on my 383, love it!   They say a vacuum secondary is best suited for an automatic, Mine is a stick so i wanted the double pumper.     

[DeathProofCuda]

Thanks very much for your input guys. Interesting to read that a 600CFM carb is probably a bit anemic for a 440. I don't have any detail on the rebuild the engine has had, as it was done a few years ago for sure.  I do know the heads are 2780915-1 1967 2.08/1.74 HP. It's a 69 Block. The cam may be stock, I don't know, and it has new rods and pistons. The intake isn't stock, it's a Weiand 7512 - see pic. The Carb is pretty old, and I was thinking of replacing with new, so ......... . What would be a better choice of carb CFM?

If anyone is interested here's a link to a gallery of the work I have done so far.

https://photos.google.com/share/AF1QipNJ93yrENSW1kXcBQk8kJMmbcThgImMy_XmiRF0jaQXRLny6eOKJ3MpY5Th2XkSOg?key=dXdvV0g3MFlqRy1lYTFuT3JVNU4zOGZkT2d2R3hR

Thanks guys.

    You certainly have been a busy man with that welder.  That is some inspiring work!  I've focusing on the mechanical and some interior stuff on my car, but am currently practicing with my mig to take on some similar patch work.  It's impressive to see how much you did by fabricating your own patches.  How did the fit of those lower quarter panel patches work out for you?  I have an old repop skin on one side of my Cuda that has very poor bottom edge contours so the rear valance doesn't connect correctly.  I've been wondering if I could remedy it with a lower quarter panel patch from AMD.

[DamianC]

Impressive !! You have completed a ton of metal work on the Chall !!

Thanks! It's been a fair bit of work so far. Apart front the front floors shes pretty solid. Hope to have the engine back in within a week or two.

[DamianC]

Thanks very much for your input guys. Interesting to read that a 600CFM carb is probably a bit anemic for a 440. I don't have any detail on the rebuild the engine has had, as it was done a few years ago for sure.  I do know the heads are 2780915-1 1967 2.08/1.74 HP. It's a 69 Block. The cam may be stock, I don't know, and it has new rods and pistons. The intake isn't stock, it's a Weiand 7512 - see pic. The Carb is pretty old, and I was thinking of replacing with new, so ......... . What would be a better choice of carb CFM?

If anyone is interested here's a link to a gallery of the work I have done so far.

https://photos.google.com/share/AF1QipNJ93yrENSW1kXcBQk8kJMmbcThgImMy_XmiRF0jaQXRLny6eOKJ3MpY5Th2XkSOg?key=dXdvV0g3MFlqRy1lYTFuT3JVNU4zOGZkT2d2R3hR

Thanks guys.

    You certainly have been a busy man with that welder.  That is some inspiring work!  I've focusing on the mechanical and some interior stuff on my car, but am currently practicing with my mig to take on some similar patch work.  It's impressive to see how much you did by fabricating your own patches.  How did the fit of those lower quarter panel patches work out for you?  I have an old repop skin on one side of my Cuda that has very poor bottom edge contours so the rear valance doesn't connect correctly.  I've been wondering if I could remedy it with a lower quarter panel patch from AMD.

Thanks buddy. Yeah I do like a bit of welding - thankfully! Fabbing your own patches is the way to go, unless they are the more intricate parts like the lower quarters. Yeah they fit very well indeed. They will need a bit of body filler to finish them off, but overall they were reasonable quality. I got them from Windy City Muscle. Keep practicing with your MIG, there's not much you can't fix with some basic welding skills and a decent MIG.

[DamianC]

Thanks for all your input guys. I just dropped a few hundred on a new 750 Holley.

Enjoy the weekend all!

[Chryco Psycho]

I hope it is an HP at least with removable air bleeds so it can be tuned properly