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#2468236 - 03/18/18 05:14 PM La 360 Stamped rocker arm question
RAY1969CARS Offline
super stock

Registered: 04/05/07
Posts: 1185
Loc: CA.
I guys I know there’s a left and a right for some reason the rocker arms look different on the left ones ?? Does anyone know why this is or is it just the way Mopar stamped them


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#2468239 - 03/18/18 05:18 PM Re: La 360 Stamped rocker arm question [Re: RAY1969CARS]
RAY1969CARS Offline
super stock

Registered: 04/05/07
Posts: 1185
Loc: CA.
I only have to the have h3lt and 6 that have g 3 And if you can notice At the top of the rocker the stamping is different between the two.
All my rights have the same stamping hi2rt


Edited by RAY1969CARS (03/18/18 05:22 PM)

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#2468247 - 03/18/18 05:26 PM Re: La 360 Stamped rocker arm question [Re: RAY1969CARS]
RAY1969CARS Offline
super stock

Registered: 04/05/07
Posts: 1185
Loc: CA.
The first 3 are g3 and the last one is the h3lt


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Edited by RAY1969CARS (03/18/18 05:27 PM)

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#2468598 - 03/19/18 01:02 PM Re: La 360 Stamped rocker arm question [Re: RAY1969CARS]
6PakBee Offline
master

Registered: 01/20/03
Posts: 5609
Loc: North Dakota
I don't understand the question.
_________________________
Wife says too many cars, liquidation coming soon......

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#2468636 - 03/19/18 02:21 PM Re: La 360 Stamped rocker arm question [Re: RAY1969CARS]
buildanother Offline
I Live Here

Registered: 08/30/05
Posts: 11061
Loc: chicagoland,usa
I keep a box of good used ones around and never really pay attention to markings. They certainly are different left to right, and stand out side by side.

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#2469197 - 03/20/18 01:49 PM Re: La 360 Stamped rocker arm question [Re: buildanother]
dogdays Offline
I Live Here

Registered: 01/20/03
Posts: 16019
The actual ratio varies from rocker to rocker. Racers spent their winter months measuring rocker ratios on boxes of rockers, picking out the individuals with the highest ratio.

Because of the way the lifters and pushrods point in different directions, a rocker that measures 1.50 on the bench will never produce a 1.50 multiplication of lobe lift at the valve.

Years ago Rob McC asked the question as he was putting the final touches on a design for the Erson LA rocker. Should he make it 1.50 on the bench or should he add to the ratio so it resulted in 1.50 ratio between lobe lift and valve movement. He said it would need to be more like a 1.55 to get a 1.50 multiplier.

R.

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