Early Hemi ???

Are 354 And 392 Adjustable Push Rods The Same Length,...also Does Anyone Have One Laying Around,,,for A 354

 

I would guess '92 pushrods are longer than '54s. The '92 having a raised deck compaired to 331 and 354 motors.

 

Adjustable pushrods? Do you mean Adjustable Rocker Arms?

 

392's are longer. Adjustable pushrods were used a lot on old engines when you wanted an adjustable valvetrain.

 

They cost about $10 each from Smith bros.

 

The 392 has a longer push rod than the 331/354. The adjustable push rods were used for hydralic cam engines that had heads milled or block decked otherwise there was no adjustment on engines that were stock. The adjustable rockers were on the engines that had solid lifters.

 

I have adjustable push rods on my 354 with a roller cam. works fine been there 20+ years

 

The 392 pushrods measure, Intake @ 10.125 - Exhaust @ 11.550.
The 354 pushrods measure, Intake @ 9.625 - Exhaust @ 11.125