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Rocker stud angle.

General engine tech -- Drag Racing to Circle Track

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Steve.k
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Rocker stud angle.

Post by Steve.k » Mon Nov 04, 2019 9:53 am

Im working on a smallblock ford with blue thunder 3.6 heads. We had a set of a3 heads before this. We used a 1.8 rocker on previous setup but on this head i have the rocker contacting poly lock just before full lift. Same cam etc. Is it likely the rocker stud location is in different spot?
IMG_4218.JPG
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Steve.k
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Re: Rocker stud angle.

Post by Steve.k » Mon Nov 04, 2019 9:55 am

I've also tested a crower 1.73 rocker and it nets more lift than the 1.8 did on old head.

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Stan Weiss
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Re: Rocker stud angle.

Post by Stan Weiss » Mon Nov 04, 2019 10:00 am

Are you using the same push rod?

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Steve.k
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Re: Rocker stud angle.

Post by Steve.k » Mon Nov 04, 2019 10:13 am

IMG_4230.JPG
IMG_4229.JPG
No Stan these heads are thicker so im using a adjustable to find length. Had to add .300 to get nice sweep. Heres crower.
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Steve.k
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Re: Rocker stud angle.

Post by Steve.k » Mon Nov 04, 2019 10:15 am

I have no idea why pics turned??

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Stan Weiss
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Re: Rocker stud angle.

Post by Stan Weiss » Mon Nov 04, 2019 10:39 am

Steve,
If you change the push rod length to get the 1.8:1 to work what doe the sweep look like?

Stan
Stan Weiss / World Wide Enterprises
Offering Performance Software Since 1987
Do you use engine simulation software that uses cylinder head flow files?
We have a package of more than 3025 DFW or FLW Files

Kevin Johnson
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Re: Rocker stud angle.

Post by Kevin Johnson » Mon Nov 04, 2019 11:04 am

IMG_4229_r.gif
IMG_4230_r.gif
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Steve.k
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Re: Rocker stud angle.

Post by Steve.k » Mon Nov 04, 2019 11:15 am

Thanks for straightening!! Stan if i shorten enough to clear the rocker belly hits on hex of stud. Likely valves are a smidge short for 1.8. I could I guess notch the back of 1.8 behind poly locks and see where that goes.

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Stan Weiss
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Re: Rocker stud angle.

Post by Stan Weiss » Mon Nov 04, 2019 11:48 am

Steve,
Do you have any lash caps you could try?

Stan
Stan Weiss / World Wide Enterprises
Offering Performance Software Since 1987
Do you use engine simulation software that uses cylinder head flow files?
We have a package of more than 3025 DFW or FLW Files

Steve.k
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Re: Rocker stud angle.

Post by Steve.k » Mon Nov 04, 2019 12:26 pm

Stan I dont have any buy no reason why I couldn't get. The keeper is set up for them.

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