update carburator on Hemi 331 marine

Discussion of the Marine / Industrial Hemis.

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mychel001
Posts: 2
Joined: Thu Jun 18, 2009 8:25 am

update carburator on Hemi 331 marine

Postby mychel001 » Fri Jun 19, 2009 8:43 am

Allo,please supply any info of what type of carburator I can install on the old Hemi 331 marine m45s,the original was missing.thank-you

mart
Posts: 536
Joined: Tue Mar 22, 2005 2:06 pm

Re: update carburator on Hemi 331 marine

Postby mart » Fri Jun 19, 2009 10:34 am

mychel001 wrote:Allo,please supply any info of what type
of carburator I can install on the old Hemi 331 marine m45s,
the original was missing.thank-you

-----------------------------------------------
What intake manifold do you have? The marine hemis
came in 3 flavors - two 1-bbls, one 4-bbl and two 4-bbls.
The two 1-bbl. setup used Ball & Ball 1 bbl carbs similar
to those used on slant-6s. The single and dual 4-bbl
engines used Carter WCFBs that flowed about 350 cfm
each. If you have the two 1-bbl intake, I'd probably swap
it for a single 4-bbl intake although you could probably, with
a bit of work, get a pair of early slant 6 carbs to work on it.
For a single four or dual quad intake you could use 500 cfm
Carter AFBs or the equivelent Eldelbrock knockoffs. On a
a single 4-bbl intake, an adaptor plate and a 390 cfm Holley
(list number 0-8007) or a 550, 570 or 600 cfm Holley
(List numbers 1849-1, 0-80570 and 1850-5) would be
reasonable choices too. No mattter what carb (or carbs)
you adapt to this engine, with anything non-stock,
you're going to have to play around with the jetting and
modify or fabricate throttle linkage and choke set-up.

mart
====================================================

mychel001
Posts: 2
Joined: Thu Jun 18, 2009 8:25 am

Re: update carburator on Hemi 331 marine

Postby mychel001 » Mon Jun 22, 2009 4:17 am

Thank-you Mart,it was 2 carburators ,I think with single barrel.

mart
Posts: 536
Joined: Tue Mar 22, 2005 2:06 pm

Re: update carburator on Hemi 331 marine

Postby mart » Mon Jun 22, 2009 5:49 pm

mychel001 wrote:Thank-you Mart,it was 2 carburators ,I think with single barrel.

-------------------------------------------------------
You might be able to find a pair of rebuildable OEM marine
engine 1-bbls from someone here on this list or on ebay.
They show up on ebay fairly frequently because guys that
are converting Marine Hemis to automotive use don't
usually have any use for them.
============================================================

S&S
Posts: 4
Joined: Thu Mar 10, 2011 2:39 pm

Re: update carburator on Hemi 331 marine

Postby S&S » Tue Mar 15, 2011 3:23 pm

Do you know if the engines used the same cam for the 2-1 bbl and the 2-4 bbl intakes?

George
Posts: 626
Joined: Wed Aug 25, 2004 4:12 pm
Location: Fl

Re: update carburator on Hemi 331 marine

Postby George » Wed Mar 16, 2011 9:47 am

S&S wrote:Do you know if the engines used the same cam for the 2-1 bbl and the 2-4 bbl intakes?

typically the OEM cam is replaced by a 354 or a reground cam for a fresh start.


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