Speed-Talk is running on www.Speed-Talk.com

IMPORTANT: Update your bookmarks to https://www.speed-talk.com/forum/
(Right-click the URL and select "Bookmark this link")

Edelbrock "Air Gap" clones

General engine tech -- Drag Racing to Circle Track

Moderator: Team

Posts: 10313
Joined: Mon Apr 11, 2005 2:30 am

Re: Edelbrock "Air Gap" clones

Post by SchmidtMotorWorks »

bobmc wrote: Tue Oct 08, 2019 6:51 am you see manifolds advertised as "permanent mold", what does that mean? and is it better than sand cast?
On a manifold it would be a "semi permanent mold" the exterior would be formed by an iron mold, but the interior is still formed by a sand core.

An iron mold is better when done properly.

Some of Edelbrocks high production heads are semi permanent.
I don't know of any US cast manifolds that are done in permanent tooling.
The industry is in steep decline right now, no none is going to pour money into that.
Helping to Deliver the Promise of Flying Cars
Post Reply