The advantage offered by t/a heads only is available if 5th are ported. If you look at your 340 intake port there is a ridge on the pushrod side that provides clearance for the pushrod. The t/a head moves the pushrod so the ridge can be removed.
The offset pushrod allows the ridge that exists top to bottom on the 340 intake port, allowing pushrod to operate, to be removed as it isn’t needed. The factory casting was the same, the machining of the pushrod offset to allow porting is the difference. Offset rocker arms are needed to...
They certainly look like stock 273 lifters with aftermarket adjusters, a must add for 340’s if you were going solid lifters back in the day. T/A rockers for exhaust are almost identical but not quite.
Word from my machinist is couple weeks to completion. I need to ask for thoughts on six pac carberator controls. The factory six pac runs the front and rear totally on vacuum. The set up I received is totally manual with the outboards set to hit full open when the primary is same.
I have the...
Beautiful car, thanks for sharing. Also, it is my understanding that the RV engines were a good platform to build from, tho I would lose the 2 barrel. Good luck
I just received one I ordered from Mancini and found it is a reproduction of the original and overall a pretty nice unit. I would recommend it as an acceptable replacement. Good luck
I do believe that this ultimately adds value to the car, pretty unique to have a factory non numbers matching car! Kinda like an old coin being mis-stamped.
Can you post some details of what you have, maybe a picture? The rings should pull fairly easily once the shifter is aligned in the correct location, to allow shifting into the lower gears. Verify your rod adjustments also, I’ve encountered similar issues due to this. Good luck and post what...