Hi.

I just took my bracket car for a spin and it's running hot.
440+030 Edelbrock rpm heads and a small flat tappet cam.

It was passing 220 deg and climbing when cruising.

I might have the first batch of 44o source pump housing.
It has a MP aluminium pump, shrouded fan and it's moving a lot of air through the radiator.

Could it be the housing like many have reported before?
I did not believe all the negative reports before but could it be it was thru?

Thanks.

I have this....very nice for filling and removing air. Not saying it's yiu issue but boy do I love this tool.

http://www.tooltopia.com/robinair-75260....CFcEehgod_84LsQ

Over heating at cruise usually indicates not enough rad or coolant flow problem. Does it stay on the stat ( if you are running one) at idle? You can often "burp" the upper hose while filling the system and get rid of about 90% of the air - doubt that's your problem though. If it's a cross flow rad, you should be able to see lots of fluid movement with the cap off once the stat opens. Temp sender should be near the stat housing. Put a temp gauge in the cap opening and see how it compares with the regular temp gauge.

At low speeds its a fan and or/ shroud issue IF
you radiator is big enough... at 50-55 and above
and it gets hot it you radiator is too small If
this is a street car
Sorry didnt see a bracket car.... too small of a radiator
which you said was a VW... or its not moving enough fluid..
I ran a L-body radiator and it was barely enough on a SB

(1) put the OE iron housing back on & retest it with no stat (no stat wont hurt you for this quick test) & see if it cools. if so then (2) put the stat back into this iron housing & if it still cools OK then the alum housing is the problem. if it still runs hot in (1) then the alum housing and or present stat ain't the problem. if it cools with the iron housing/no stat then runs hot with the stat installed in the iron housing then obviously the stat is the prob. On a side note drilling a 1/16 hole in the stat flat lets you top off pretty much completely on the initial fill and elims hot spots/saves time. EDIT if it ain't the housing or stat & the mixture/timing is in the ballpark with no vac leaks then "at speed" above ~40 MPH it is a rad flow issue (partly restricted)