Hot Rods Let's talk Cadillac 331's, 365 and 390's

do you think a guy can get away with stock valve covers and rocker shafts with a .480” lift? I’m looking at the same cam setup with 390 heads. 1.6:1 ratio

 

It's not the amount of lift that causes it to hit the valve covers, it's when you convert to adjustable rockers.

 

Will a 1957 water pump fit a 1956 365 engine? I need the water outlet on the passenger side instead of the drivers side.

 

YES !

 

Awesome thanks I appreciate it.

 

Can anyone help him out?

https://www.jalopyjournal.com/forum/threads/331-cadillac-1st-gen-lifter-issues.1278697/

 

Found some treasures today.

 

The UPS man brought some good stuff today.

 

Santa came early!

 

I want to see if anyone in here would be interested in this 1955 remand water pump before I list it for sale. 200.00 plus shipping.

 

only other thing to check- 1957 had the timing tab and the balancer mark on the opposite side to avoid the pump inlet. I’m not sure if you can see your timing marker with a 57 pump on a 56 setup easy. Might be good to double check that to be sure

 

Awesome thanks. I will definitely check that out.

 

This is the adapter on my engine now. It came out of a 40 coupe. Is there a way to adapt this the a Muncie or will I need one of the high priced kits?

 

That one is to adapt it to the stock Ford transmission. You will need to get a different one to convert to the Muncie I believe

 

OR...you could buy one of the flathead to G.M. four speed adapters that's currently available and bolt it to your existing adapter.

 

I'll research that. Thank you

 

One like this? Would I use the clutch and pressure plate already in it?

 

The disc will probly be different but you can still use the pressure plate. And yes that is the adapter you need

 

Awesome thank you for your help

 

Anyone having a cad file for
Cadillac 331 (Early) Exhaust Flange?

 

Hi all. Finally found an Un cracked head and got my truck running with this 390 Cadillac. Issue I’m having is I keep blowing my lower radiator hose off. I have a 16psi cap. I plugged the heater inlet and outlet on my water pump because I don’t currently have a heater on my truck. Is 16psi cap too much? Im just running straight water because im tired of dumping antifreeze down the driveway…. Any ideas?

 

There's something else going on there......the cap shouldn't make it do that, regardless of the pressure. It has to be getting hot in order to build that much pressure. How hot is it running? Pull the dipstick and make sure there's no water in it.

 

. I’m only running it a few minutes. Gauge says lower than 195.

 

Can you see coolant flowing if the cap is off?

 

Yes. After a few minutes water was moving.

 

Actually. It is moving but not like you would think. Thermostat is brand new but maybe it’s a dud. Maybe I’ll take it out and remove that variable

 

A bypass? What would I be looking for? I was wondering if my plugging did something unexpected. That was my concern

 

Before the cracked head, did the radiator seem to be ok?