E-street vs Promaxx vs 440 Source
And then...... sometimes even heads that have been built at a shop.......have things screwed up.
Here’s a set of SBM RPM heads built from bare castings that someone sent me to look over.
Intake and exhaust valves not the same OAL..... along with also having a different tip length.
So, noticeable spread in tip height..... and an even a bigger spread in installed height.
Then there was also “that one spring”......
![9EBFD0E2-BF42-430B-B389-DD3374107B7E.png 9EBFD0E2-BF42-430B-B389-DD3374107B7E.png](https://www.forabodiesonly.com/mopar/attachments/9ebfd0e2-bf42-430b-b389-dd3374107b7e-png.1715849700/)