Stamped rockers for roller motors vs stamped rockers for flat tappet motors

[AMC Diplomat]

Are the stamped rockers from the later roller engines interchangeable with the stamped rockers from the flat tappet engines?

I know there are two different sets of part numbers,

4095708 and 4095709 for the early ones and 4100774 and 4100775 for the later ones.

I have a really beautiful and clean set of used ones out of a roller engine and I want to use them in my 360 refresh

 

[Ash_Whole]

the roller motors are pedestal mounted, the flat tappet motors are shaft mounted

 

[Mikes5thAve]

the roller motors are pedestal mounted, the flat tappet motors are shaft mounted

With the 302 heads the roller 318s used they are also shaft mounted.

 

[AMC Diplomat]

Yeah definitely shaft mounted. The rockers have an ever so slightly different shape.

I looked up the AHB parts that used a flat tappet cam and the 360 heads. These later rockers that I have were used on the AHB engines with the 360 heads and the roller 318s with the regular 318 heads, so the geometry between the two on a 318 can't have been that far off.

I'm just wondering if i can used em on a 360

 

[Vaanth]

Are the stamped rockers from the later roller engines interchangeable with the stamped rockers from the flat tappet engines?

I know there are two different sets of part numbers,

4095708 and 4095709 for the early ones and 4100774 and 4100775 for the later ones.

I have a really beautiful and clean set of used ones out of a roller engine and I want to use them in my 360 refresh

Yes, the LA hydraulic camshaft with flat tappets, and later roller tappets, are interchangeable.

Five versions of the rocker arms for hydraulic camshaft with flat tappets, and later roller tappets, were used in the Chrysler LA engines.

Each release of a new rocker arm superseded previous versions in stages across the different LA engine sizes.
The Chrysler part numbers for latest to earliest are as follows:

“Left” rocker:
4100775 <- 4095709 <- 3418424 <- 3004717 <- 2536145

“Right” rocker:
4100774 <- 4095708 <- 3418425 <- 3004716 <- 2536144


The timeline of the rocker releases for the LA engine is as follows:

​

2536145 and 2536146	Released for the 1967 LA 318.
3004717 and 3004716	Revised in 1968 to include the 340 and used on the 318, plus the 273 which switched from a solid lifter to a hydraulic lifter.
3418424 and 3418425	Revised as a stronger rocker with greater spring clearance for use on the 340 (non-six barrel). The 318 and 360 (1971) still used 3004717 and 3004716 until 1974, then switched to this one.
4095709 and 4095708	Released in 1978 with a heavier stamping for the E58 360 high performance engine. The 318 still used 3418425 and 3418424 until 1982, then switched to this one.
4100775 and 4100774	Revised for the 1981 360 in trucks and released for use in truck 318 engines. Passenger car 318 still used 4095709 and 4095708 until 1984, then switched to this one and continued through 1988, including the roller camshaft engines.

 

[AMC Diplomat]

Yes, the LA hydraulic camshaft and flat tappet rockers are interchangeable.

Five versions of the rocker arms for hydraulic camshaft and tappets were used in the Chrysler LA engines.

Each release of a new rocker arm superseded previous versions in stages across the different LA engine sizes.
The Chrysler part numbers for latest to earliest are as follows:

“Left” rocker:
4100775 <- 4095709 <- 3418424 <- 3004717 <- 2536145

“Right” rocker:
4100774 <- 4095708 <- 3418425 <- 3004716 <- 2536144


The timeline of the rocker releases for the LA engine is as follows:

​

2536145 and 2536146	Released for the 1967 LA 318.
3004717 and 3004716	Revised in 1968 to include the 340 and used on the 318, plus the 273 which switched from a solid lifter to a hydraulic lifter.
3418424 and 3418425	Revised as a stronger rocker with greater spring clearance for use on the 340 (non-six barrel). The 318 and 360 (1971) still used 3004717 and 3004716 until 1974, then switched to this one.
4095709 and 4095708	Released in 1978 with a heavier stamping for the E58 360 high performance engine. The 318 still used 3418425 and 3418424 until 1982, then switched to this one.
4100775 and 4100774	Revised for the 1981 360 in trucks and released for use in truck 318 engines. Passenger car 318 still used 4095709 and 4095708 until 1984, then switched to this one and continued through 1988.

This is exactly what I wanted to know and more! Thanks!!!