340 Six Pack Rocker Assy Switch

[Double A-R]

Is there a problem putting a regular 340 roller rocker assembly on a factory 1970 340 six pack stock engine.

 

[Newbomb Turk]

Yes. The pushrods won’t line up. You need offset rockers for TA heads. You can’t just swap them around

 

[Double A-R]

So the pushrods will contact the ports. Trying to understand as the valve spacing is the same and the block is the same. I read the side of the ports were roughly ground for the pushrods to clear the ports. Cheers

 

[Oldmanmopar]

T/A and W-2 are the same. The intake rocker is offset to line up with the relocated pushrod holes in the head. So if you have T/A heads your rockers should be offset. Like the top set in the picture. In that case you would need W-2 style rockers. The reason they offset the pushrods was to allow the intake ports to be opened up

 

[Double A-R]

I found the answer on this thread, great forum.

TA rocker question.

I'm looking at a TA longblock. One of the rocker arms is missing. The owner suggested that this is not one of the offset rockers and could be sourced from a regular 340. Is this true? Pic:

www.forebodiesonly.com

 

[Scampin]

T/A and W-2 are the same. The intake rocker is offset to line up with the relocated pushrod holes in the head. So if you have T/A heads your rockers should be offset. Like the top set in the picture. In that case you would need W-2 style rockers. The reason they offset the pushrods was to allow the intake ports to be opened up

View attachment 1716386096

W-2 and T/A rockers have different offset amounts. T/A is offset .5" and W-2 is .775", not interchangeable.