MotorHead17

I had a valve job done on my heads. Also added a cc503 and scorpion 1.6 SA rockers. Would a valve job push the valve stem up just that much further to need shorter pushrods? I have only found pushrods that come in .050 increments.

96capricemgr

iTrader: (1)

Was the can setup up and running with the right length pushrod before the valve job?

If so the valve train is adjustable and will compensate.
This isn't as sensitive as a nonadjustable LS engine

MotorHead17

Nope, engine came apart. Got a valve job and just got the the cam and rockers.. It was the cars first ever valve job if that makes a difference. Only 78,000 miles on the motor.

96capricemgr

iTrader: (1)

Then I would be a lot more concerned with what the cam and rocker swap would do than the valve job, you should measure.

Kevin97ss

Typically how ever much the valve gets sunk into the seat is removed from the tip of the valve so it ends up the same length. What will change is the position of the lock groove.

BALLSS

OP

it is recommended you "check" PR length when cahngeing cam & valve train parts.

You may very well wind up with the stock 7.200" PR...but the point is "check" first

if you are getting SA RR and the length checks out that stock will work than re-use your existing PR's...if however you are getting NSA RR's than you will need hardened PR & guide plates and at that point I would also get .080 thick wall PR

MotorHead17

I will check, if it ends up being 7.200 I feel like spending 33 bucks or whatever it is on comp cams hi energy pushrods might be the way to go. Just to be on the safe side.

93M6Formula

With 1.6 rockers, stock lifters, CC503, and untouched heads I ended up with a 7.100" PR. It had the most narrow pattern.

MotorHead17

I measured and got 7.050 and that is with heads that just received a valve job. It could almost be 7.000 but I would rather have a pushrod that is a bit too long than a bit too short. Does that seem about right?

MotorHead17

7.050 seems very short for a head that has only a valve job. I called summit and they told me since I don't have a solid lifter or a checker spring to prime the oil system to pump up the lifters. I did that and got 7.050. Called them back and they said 7.050 should work fine. The only thing I can think of is the scorpion rocker combined with the different cam and valve springs to throw it off .150. I would really like someones input before I order pushrods.

MotorHead17

Bump!

BALLSS

from this side of the internet, with your valve job/cam, 7.050 sounds short

this type of checker is simple an does not require a soft spring or solid lifter to accurately work

For $12, would be worth a check. I have used it to verify PR length determined the typical way. spot on.

http://www.summitracing.com/parts/pr...FcVffgod32cAow

They make one for 7/16 studs also

your lifter, without pre-load should be at its top, put PR in and the check tool on rocker stud. holding tool flat on valve spring the other side should be touching the PR.

for PR I use the TrickFlo Chromalloy hardened ones with .080 thick walls but I have NSA RR & guide plates