massey harris 444

444masseyharris · May 7, 2019

i am bulding a 444 puller and i want a big carb what is the best and whare can i find

David G · May 7, 2019

Are you changing the valves in the head?

They limit the amount of air.

old · May 7, 2019

What all are you doing?? If all your going to do is add a bigger carb you will gain little or nothing

David G · May 7, 2019

Agreed, I ran out of air long before fuel on my EFI, if I had it to do over again, would have bought a custom head from Goldburg, he mills them out and puts in bigger valves.

jm. · May 7, 2019

I built several heavy 44/444 engines for pulling for several years. We did bore the jets but never had to change the carb. As David said the most increase one can gain is by bigger intake and exhaust valves, changing the cam can help but where we were pulling RPMS were limited to 10% over stock. Bore and stroke can be increased on that engine also. If you see anyone I have a pulling ready propane 55 MH head that I would sell cheap. Already has the big valves.

David G · May 7, 2019

What would the compression ratio be on that with 277 displacement?

David G · May 7, 2019

Holy cr@p, that is a big engine, I thought it was same as 44.

roy prins · May 7, 2019

one word -- TURBO

David G · May 7, 2019

I would totally agree with that.

I put 9.5 to 1 pistons in mine, had to have them made, should have put in flattops, with a turbo.

old · May 7, 2019

One problem with that is if you do not build the bottom up that turbo will blow it right out.

444masseyharris · May 8, 2019

how much for that head

444masseyharris · May 8, 2019

(quoted from post at 13:27:15 05/07/19) Are you changing the valves in the head?

They limit the amount of air.

yes soon i am wanting to get over 200 hp

444masseyharris · May 8, 2019

how did you do the efi and what kind is the efi

massey harris 444

444masseyharris

Member

David G

Well-known Member

old

Well-known Member

David G

Well-known Member

jm.

Well-known Member

David G

Well-known Member

David G

Well-known Member

roy prins

Well-known Member

David G

Well-known Member

old

Well-known Member

444masseyharris

Member

444masseyharris

Member

444masseyharris

Member

Similar threads