Engine Engine rebuild suggestions
- By JulianR
- Fox 5.0 Mustang Tech
- 291 Replies
For others like me, who are reading this thread. I called Trick Flow Specialties, talked to a person for 20 minutes. Very helpful folks, btw. Wasn't the first time I asked them technical questions. I described what heads I have and what's not working. The person told me that pushrods are sold in 0.050 increments. Stock one is 6.250, next one up is 6.300. Doesn't matter what you measure in between, you need to pick one of the two. If you want, they can produce a custom pushrod to your exact size for an extra fee He also said that hydraulic lifters are very forgiving. They have a check valve and fill with oil, so they compensate any mistakes people make on the preload/pushrod size. He explained that lifter preload, is the distance the spring-loaded plunger in the lifter travels down. He confirmed what I was talking about in my post with photos. He said getting to 0 lash with moving the pushrod is different for everyone. Some move it with more force some with less, thus the lifter compensates the preload they set. He did confirm the lifters should not be filled with oil when setting preload.
I just ordered a set of their 6.300" TFS pushrods and I should be on my way.
I just ordered a set of their 6.300" TFS pushrods and I should be on my way.