oldschooliron

Hi all - I have a 70s 440 in our motorhome, redoing the intake gasket (dead rat) - anyway, can i block off the hot water crossover between heads? Also - there is a weird water pipe with coolant going from under carb to water pump (bypass?) - can I also plug this off?

No need for heated manifold in southern california! If anything ill put on an insulated gasket under the carb-

motor is a 440 stock in a 27ft 1967 travco 270-





thanks!

RacerHog

For around here... You can plug it off.... Just make sure the Electric Choke works and you shouldn't have any issues...
Mopar On !!!

oldschooliron

cool - yeah carb running good - what about the hot water cross over between heads? any chance i can block those off too? chevys have those block off plate shims that come in some kits..

Iowan

We plug them off in Iowa, but then I can’t think of one 440 that gets lit at -20 not one.

RacerHog

If your referring to the cross over holes in the middle of the intake manifold.... Yes you can block those off... Those should be just exhaust crossover's... Don't need those for around here nether..
And as you said... Use a good thick carb to intake gasket... The thickest you can get the better...

oldschooliron

gotcha thanks - since we might take the MH into altitude i just put it back on as it was- thanks for all the replies!

RacerHog

Safe Travels... Keep us posted on how it runs... Mopar On !!!!!

oldschooliron

will do - prob try get her running this week cos we gotta move our shop

RacerHog

I Hate Moving !!!! Again, Safe Travels... Best of luck on the moving... Cheers

oldschooliron

yep- had a deal fall thru to purchase and im sitting with 4 boats, rv, about 10 engines and a TON of equipment and nowhere to go as yet- lovely! Waiting for the Lord to open a door otherwise I might have to close shop and call the scrap guy!