News:

SPECIAL NOTICE - See SAAC-50 Forum for DATE CHANGE for SAAC-50

Main Menu

why do I need 3/8" valve stems?

Started by shelbydoug, April 04, 2020, 04:02:18 PM

Previous topic - Next topic

Royce Peterson

We are (or were) talking about valve stem diameter.


Quote from: 2112 on April 05, 2020, 11:32:01 AM
Be careful using skinny pushrods. The flex and will bend. The flex leads to valve float.

If you are using garbage Comp Cams roller lifters, expect them to implode in short order.
1968 Cougar XR-7 GT-E 427 Side Oiler C6 3.50 Detroit Locker
1968 1/2 Cougar XR-7 428CJ Ram Air C6 3.91 Traction Lock

shelbydoug

Quote from: Royce Peterson on April 07, 2020, 12:28:18 PM
We are (or were) talking about valve stem diameter.


Quote from: 2112 on April 05, 2020, 11:32:01 AM
Be careful using skinny pushrods. The flex and will bend. The flex leads to valve float.

If you are using garbage Comp Cams roller lifters, expect them to implode in short order.

Correct.
68 GT350 Lives Matter!

gt350hr

#17
      Doug, If you don't want to talk about pushrods don't bring it up ( reply #3). ;) "corrected"
Celebrating 46 years of drag racing 6S477 and no end in sight.

shelbydoug

Quote from: gt350hr on April 07, 2020, 02:15:11 PM
      Doug, If you don't want to talk about pushrods don't bring it up ( reply #2). ;)

I didn't say I didn't want to mention them, just agreed that they weren't the original subject. Neither are 6mm titanium racing stems but in the spirit of folks volunteering infor that they would never tell you if you asked directly?

There definitely needs to be some flexibility here?
:o

Some folks think that hemorrhoids are significant also but I think that gets more into why people drive automatics vs. manual shifts? I would want to see the data sheets on that one.

We could also talk about whether or not a person with a seeing-eye dog should be driving a 350 or a 500?  8)

68 GT350 Lives Matter!

2112

Quote from: Royce Peterson on April 07, 2020, 12:28:18 PM
We are (or were) talking about valve stem diameter.


Quote from: 2112 on April 05, 2020, 11:32:01 AM
Be careful using skinny pushrods. The flex and will bend. The flex leads to valve float.

If you are using garbage Comp Cams roller lifters, expect them to implode in short order.

It is all part of the valve train, where no part is unimportant.