Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
1989 chevy pu 350cid I am installing the intake manifold. The manifold to head gasket has the rear most water port blocked.?
I've worked on small block chevy's a long time and have never seen blocked water ports in the gasket before. The manifold and heads have flow through water jackets but the gasket is blocked off with a small hole (3/16" maybe) punched in the top of the blocked port. What is the purpose of blocking that water jacket and wont that cause a cooling problem?
3 Answers
- Me BrodLv 66 years agoFavorite Answer
A quick search on Summit shows you must have the wrong gasket. You have the 1205 or 1206 which is blocked water passage.
You need the FelPro 1204 w/ open passage. $17. The purpose for blocking that off is to keep the intake cool. Its more of a racing thing where normal operating temps are not desired. I would suggest returning yours and getting the proper one.
- ChrisLv 56 years ago
GM/Chevy have made improvements to gaskets over the years, also different years/vehicles were slightly different.
It re-routes the cooling flow to other important areas in these cases.
Cant say its for your application, was your old gaskets open in the rear passages?
- Anonymous6 years ago
Hi so some manifold don't have a water jacket so you don't need water flowing around the inlet manifold.
