Twin H manifold, what year?

[faustmb]

Is this a later 55-57 Twin H manifold? The casting has "5325118" on it between the carb mounts.

Thanks in advance,
Matt

[Bill Cox - TN]

Yes, it's a '55-'56 manifold. It doesn't have the "tube" on the front side like the '52-'54 manifolds have.

Bill

[faustmb]

That's what I thought, but have never seen one installed. Will these work in a stepdown?

[SuperDave]

Yes, as pictured, they will work just fine. You must use the stepdown exhaust manifold or change your exhaust pipe diameter and angle to fit the Hash exhaust. There is an equalizer tube cast into the hash manifold. A simple change to clear the spring towers on the nash/Kenosha body.
Dave w Fl

[Bill Cox - TN]

That's what I thought, but have never seen one installed. Will these work in a stepdown?Yes, the '55-'56 manifolds will work in a stepdown. There's one on my '54 Hollywood.

Like Dave said, you have to use a stepdown exhaust manifold, or change the way the angle/size of the exhaust pipe if you use the '55-'56 exhaust. Of course, my brother Corky eliminated that problem by going with the Clifford headers and dual exhaust.
:D

Bill

[bill a]

You Guys Are Steering Him Wrong, The Stepdown Exhaust Will Not Mate Up With The Hash Intake, You Will Need The Hash Exhaust To Go With The Intake Or Use Headers, The Only Difference Is The Outlet Flange Which Is Bigger, Bill Albright

[PAULARGETYPE]

You Guys Are Steering Him Wrong, The Stepdown Exhaust Will Not Mate Up With The Hash Intake, You Will Need The Hash Exhaust To Go With The Intake Or Use Headers, The Only Difference Is The Outlet Flange Which Is Bigger, Bill Albright
GIVE BILL A A STAR HE'S RIGHT ON YOU NEED BOTH PARTS THE INTAKE AND THE EXHAUST TO MAKE IT WORK NOW ALL YOU GUYS WHO DON'T LIKE HASH'S TAKE ALL THE 55,56 PARTS OFF THOSE STEP/downs!!!!lol
HUDSONLY
PAULARGETYPE

[Park W]

I have a very nice "Hash-type" exhaust manifold. Heat riser works freely. Has been welded, but in service long after with no problems. Also have the proper exhaust pipe to use it on a stepdown. Used but in excellent condition. Planning on bringing both to the Central Regional in Dayton.

[SuperDave]

You Guys Are Steering Him Wrong, The Stepdown Exhaust Will Not Mate Up With The Hash Intake, You Will Need The Hash Exhaust To Go With The Intake Or Use Headers, The Only Difference Is The Outlet Flange Which Is Bigger, Bill Albright

Dog gone it.. Bill is right. I checked my parts stash and the stepdown exhaust won't mate up. Gotta use the whole thing..The exhaust pipe hook up shouldn't be to big of a problem though. Sorry to put misinformation out there.
Dave W. Fl:mad:

[faustmb]

Thanks to all for the information. It's been said a million times on here, but this forum is an invaluable source of HET information.

I plan on using an exhaust header when I get to it. I'm just making sure that the parts I do have are going to work.

Matt