You guys really think its worthwhile to keep a 239 on the road?

 

Absolutely. It's a Y-block, too.

 

Agreed. Some guys even like their I-6. But if you have had experience with a healthy 292 or 312, it prob. would not work out well with the 239 .

 

I have a 4 barrell and carb for the y block ,check it out in my Parts I Have Album

 

Rick, when I get to this 312, the currnt plan is an Edelbrock breather in each valve cover, and a home made 1/4 inch aluminum valley with no fill tube, but rear pcv.

 

It is absolutely worth keeping on the road! It's the original Y-block!!! But, my wife would like me to get rid of the 3 other 239's I have in the garage - she may have a point!

 

Mike,


What's the best choice carb to go on that manifold?

 

Best choice? Whats that again? Heck I dont know. Maybe a Demon JR., but they are too expensive. When it is installed this spring, there is a new rebuilt 2V Autolite on the shelf. It was used in '72 Merc.s running 351s, big 1.21 venturi. I'll try that out. It should push rpm's up to 5000 which is good for me.
Will just have to put it to the test and see if there is a bog on acceleration due to its being TOO big.

A flat track/circle track 2V adaptor plate will be used between the carb and intake. It is the same one I had on the Blue Thunder.

 

Do you still need the vacuum signal to the distributor? I think Holley still makes a 4 barrel that works for that.

 

That will depend many things, including the manifold. For most street Y's, anything larger than 600 cfm will probably be too big.
If the question is relating to brand, then everyone has their preference. My choice would be a Holley over an Edelbrock but I would like to try a Demon because I have not yet.

 

Yes there are about 3 or 4 different Holley versions that would be possibilities. Like Charlie said everyone has their preference. Mine is the old Autolite. Someday I'll find a good Autolite 4100 1.08 4V.