Push rod length

[mustang_gt88]

my new setup will be a 306 with x303 cam, gt40x heads, 1.6 roller rocker, what pushrods should I run? I am pretty sure i need hardend ones since the heads have valve guides.

[SN95N/A]

You'll need a pushrod checker,should be in the 6.7" range

[Gearhead]

How are your heads set up ??
If they're pedestal mount heads , the stock pushrod length is 6.27, so anything around 6.30 should work, but you should always measure to be sure....

If you've milled off the pedestals and converted to stud mount rockers, then you definitely need to measure.
6.7 would probably be much too long if you're still using pedestal style bolt down rockers.

Also, if you're using guideplates, then yes, you need hardened pushrods.

[slow86fiveoh]

U can use a stock pushrod and cut it half and take a small section out of it then tap both ends to accept a piece of all thread with 2 jam nuts to use as a checker, worked for me and it doesn't cost hardly anything

[akagreg3]

i have a set of hardened dss 6.4 if it turns out that the size you need.

[Racin Jason]

I have a checker and a set of hardened comp cams. 6.300. Have only 130 miles on them. Hit me up

[mustang_gt88]

They are ped mounts

[coupegt]

I have a adjustable trick flow pushrod checker and a set of crane hardened i believe they are 6.350 will double check to make sure if you need them.

[mustang_gt88]

Thanks for the help guys