• When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

Edelbrock RPM Intake for 383, Heat Ports ?

VANDAN

FBBO Gold Member
FBBO Gold Member
Local time
2:19 AM
Joined
May 27, 2011
Messages
6,199
Reaction score
11,800
Location
Western NY
A friend of mine "permanently" loaned an RPM intake to me, and I was considering installing it on my '70 383. I was wondering if it is worth the effort to block the heat passage ports that pass under the carb ? Will this benefit keeping the heat away, or am I risking damage the top end by trapping the heat in the heads ? If I do block these ports, what's the best method to do so, or does someone offer a sturdy enough gasket that accomplishes this ? Any, and all feedback is appreciated, Thanks...
 
Last edited:
The Mopar valley pan gasket FelPro P/N: 375-1214 blocks off the heat to the intake via the tin valley pan gasket itself. That should do it for ya.

https://www.summitracing.com/parts/fel-1214

https://www.jegs.com/i/Fel+Pro/375/...MIl-vqgMD64AIVmYrICh1bHgGyEAQYBCABEgI6APD_BwE


Capture.JPG
 
Yep, what 91r/t said. If you ever drive in cooler weather, you might want to leave the heat cross-overs open so your choke will work OR use a carburetor with a manual choke setup.
 
If you do block off the heat cross over and drive in cooler Spring or Fall weather it just takes a little longer warm up.
 
Block it off. With the intrusion of alcohol into the gas, anything you can do to keep the intake and carb cooled off is going to be a big help. The alcohol in the gas lowers the boiling point of the fuel substantially. One of the brethren here found out last year that the fuel was boiling a 150*. Not good when you have an engine running at least 180* and heat from the exhaust system pushing underhood temps way past 200*.
 
Auto Transport Service
Back
Top