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Old March 28th, 2012, 11:30 AM   #1
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Default Roller rocker issues 351W need advice

So I've read how to adjust them and everything and understand that, and also how to measure for Pushrod length and check the pattern on the valve stem. So here's where I'm confused, I used a stock length edelbrock push rod with my E303 cam and 1.72 RR's I got a pretty thin pattern on the stem and it's centered but my roller rockers aren't sitting down on the stud very far at all it's Probably only threaded on a 1/4" I think this may cause problems. Here's some pics to help you see what I'm talking about.






Heads are 185ccAFR's stock as far as i know i bought them used from a friend, Im going to call him tonight and see if he has changed anything on them.
Should i try different length pushrods and try and get them to sit down lower?
Thanks
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Old March 28th, 2012, 11:42 AM   #2
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you already know that you don't have enough thread engagement to safely run this motor i assume. pushrod length is your thing to chase down. afr should be able to point you in the direction you need to go, nice heads!
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Old March 28th, 2012, 12:49 PM   #3
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Yeah your pushrods way to long I am useing same head rocker combo and mine thrad on way more that shit scary
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Old March 28th, 2012, 01:04 PM   #4
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^^^ what he said. General rule- the taller the lift on the cam, the shorter the pushrod. Maybe he can get you a ball-park length of what he measured out to...
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Old March 28th, 2012, 01:32 PM   #5
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Quote:
Originally Posted by stroker00s10 View Post
Yeah your pushrods way to long I am useing same head rocker combo and mine thrad on way more that shit scary
What length were your pushrods if you don't mind me asking, I'm off work this weekend so I'm going to try and play around with my pushrod length checker and get something goin.
Thanks for the help guys!!
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Old March 28th, 2012, 02:32 PM   #6
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I have my engine sitting on stand I will measure them out tonight for you see what I come up with.
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Old March 28th, 2012, 02:36 PM   #7
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Thanks, I'd appreciate it!!
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Old March 28th, 2012, 07:36 PM   #8
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Something does not look right for sure, can you get a pic looking at the side of the rocker, at rocker height?

Like this but a little lower more from the front

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Old March 28th, 2012, 07:53 PM   #9
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I have a pushrod checker here in livonia if you need to use it. I think it goes up to 7.5" ? I could double check if interested.
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Old March 28th, 2012, 10:31 PM   #10
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Okay so went and got some more pics.
Without pushrod rocker sits down all the way.



Overall shots with both stock length pushrods.




Now with the pushrod checker on the intake and stock on the exhaust, this is as short a pushrod as I could run without clearance issues but the pattern sucks, I'm gonna call AFR tmrw and then ARP and see if I can get some longer studs.


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Old March 28th, 2012, 10:33 PM   #11
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Crappy pattern
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Old March 28th, 2012, 10:43 PM   #12
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You can also run a hardened washer under the stud if you have enough length on the bottom, it also helps keep the stud out of the intake port as well.

Are you using a solid lifter for checking? If not the lifter may collapse and mess with your length.
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