Can you identify these valves?

[Dougy Dee]

I have a new set, still in the paper packaging, of 35.5 SS valves with the markings 25016 on the stem. The markings are stamped in to the stem.

They look awful close to the Manley valves I have here. Similar swirl and stem finish.

I dont recall where or what I acquired them for But I am considering using them on the exhaust side of a set of hot street head.

Can any of you Head Guru's identify the manufacturer? Thanx

[stealth67vw]

The part number is right in line with other Manley valve part numbers.

[stealth67vw]

Nevermind, that part number is for a 7/16" pushrod

[ugly duckling]

pictures.

[RhoadsVW]

The part # is for Scat 35.5 exhaust valves.  I believe they are Scat.  Dave Rhoads

[K-Roc]

The part # is for Scat 35.5 exhaust valves.  I believe they are Scat.  Dave Rhoads

Yup, That would be my guess as well.

25005 =      40mm Intake
25046 =    42mm Intake
25025 =    44mm Intake
25107 =    48mm Intake - T4
25120 =    50mm Intake - T4
25024 =    33mm Exhaust
25016 =    35.5mm Exhaust
25026 =    37mm Exhaust
25108 =    38mm Exhaust - T4
25067 =    40mm Exhaust - T4

[Dougy Dee]

Thanx for the info.
I know I've had them long enough to forget where I got them and what I got them for....
I figure they're old school.

Are these Scat valves any good?

Are they comparable to Manley or Eaton?

[RhoadsVW]

I know a lot of good head builders that use them.  I have never had a problem with them and they are in a lot of motors.  I always provide Scat valves to the head builder with any of the heads that I have done.    Dave Rhoads

[Dougy Dee]

Interestingly the transition area from the head to the stem look similar to my Manley stuff.

UD asked for pix...






Again, Thanx for the responses....

[ugly duckling]

i would trust them over a Manley 3 groove any day. the manley from 25 years were good. scat /PEP are good. im gussing that is there supplyer for scat .way cheaper to than a manily.    $8 vs $15possibly more. UD  .  

[Bruce]

i would trust them over a Manley 3 groove any day.

Tell us more about the current Manley valves.

[ugly duckling]

havent touched any in about a year maybe they changed there ways. this was the troubel i was having.  KEEPER GROOVE WERE NOT DEEBURED from the factory before you could install into a guide you would have to polish HEAVE to make them go in. another when heads would come in with usaly chev springs i seen about three sets were the keeper grooves seperated from the stem. never did see that with a cheap valve. there custom stainless are fine. maybe they have changed dont know. UD  .