 |
|
| SOLD Parts The parts in here have already been sold. The topics will be kept for a few months for reference. |
|
|
Thread Tools | Display Modes |
|
#1
11-11-2015, 12:13 AM
|
||||
|
||||
New AutoTec/RaceTec Custom Forged 421 Pistons (pics)
New set of eight AutoTec/RaceTec custom forged pistons, complete with pins, spirolocks and rings. Selling because my standard bore 421 block wouldn't clean up at 4.120", due to a ridge reamer being misused during a previous rebuild.
23cc D-shaped dish 4.120" bore size , .980" diameter pins, 1.575" compression height, 1.5/1.5/3.0 mm rings. For you guys wanting to build a 421 with a minimal overbore (+.027) and still keep the original high-compression heads these are the pistons you want. Compression ratio will be near 9.3:1. There are really no off-the-shelf forged pistons available for the 421, so a custom order is the only way to get them. Also a good piston for a 389 block with a 4" stroker crank, bored .057" over. A nice stealthy way to add cubes to your GTO 389 and still retain the original heads for pump gas use, again compression will be about 9.3:1. $600 plus shipping. Checks or money orders only please, I don't use PayPal. Please send me a PM if you're interested, thanks.       
|
|
|
The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.
Threaded Mode