PUSHRODS

[NewbeewithGT]

I am going to purchase roller rockers for my 94 GT and i was wondering if anyone could tell me the stock pushrod size for my motor? I need to know to be able to purchase these and i want to purchase them before i tear into my car.

Also what all needs to be done when trasitioning to roller rockers? Any input would be great!

 

[85_SS_302_Coupe]

I *think* it's 6.25 inches but you're always best to use an adjustable pushrod checker and make sure. You might wanna go with hardened rods while you're at it just for the added strength.

 

[5spd GT]

6.272" is the stock size.

 

[NewbeewithGT]

Thanks for the input! What about what is the diameter for the pushrods?

 

[5spd GT]

5/16"

 

[NewbeewithGT]

The roller rockers i have been finding online all have the options of 3/8 and 7/16

 

[5spd GT]

The roller rockers i have been finding online all have the options of 3/8 and 7/16

Pushrods and the studs (3/8" or 7/16") that the rockers 'rock' on are different.

The stock pushrod is 5/16" in diameter.

The roller rocker options that you listed are for the stud thickness. 7/16" is the better of the two options, because of the added strength.

The roller rocker and stud size needs to match, i.e., you need 7/16" rockers and 7/16" studs to screw-in your heads.

The pushrod thickness of 5/16" has no relation

 

[troyGT03]

if you have a 94 GT you dont need to change pushrods unless you have your heads machined for guideplates. if you are just adding rr then no changes are required.

 

[NewbeewithGT]

I got to thinking about that last night when i was trying to sleep i had those two mixed up. So is the stud size on stock 7/16 or what will i have to do to trasition to that as well?

Thanks for the previous clarifications

 

[5spd GT]

Well, if I recall I believe STOCK pedestals are 5/16". Common upgrades are 3/8" and 7/16". I'm pretty sure you will need machining to do that Someone should be able to help you. I'm not all that 'up' on pedestal mounted rockers.

 

[PUNISHER RACING]

6.250 to 6.272 depending on manufacturer and all you need is a set of pedestal mount 1.6 or 1.7 roller rockers. the stock thread size is 5/16-18. you can also buy a staggered set of 1.6 intakes and 1.7 exhaust rockers. that 1.7 on the exhaust helps out with those restrictive stock head ports. my 2 cents