ZZ4 push rods
Thread Starter
Le Mans Master
Joined: Mar 2004
Posts: 5,107
Likes: 171
From: Dublin CA
ZZ4 push rods
Discovered that the ZZ4 when using roller cam, and roller lifters uses a SHORTER pushrod 
. This combo uses 7.2" rods. Figure this into your future build if going to the ZZ4 or a roller block.
Oh yea, also used a different flexplate.
. This combo uses 7.2" rods. Figure this into your future build if going to the ZZ4 or a roller block. Oh yea, also used a different flexplate.
Le Mans Master
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
All the SBC roller cam engines (late L98 , LT1/4 , ZZ4 , Vortec ) have 7.2" pushrods v 7.8" for flat tappet cams.
All the above with one piece cranks have a flywheel / flexplate with 3.00" PCD crank pattern v 3.58' on the two piece seal cranks.
All the above with one piece cranks have a flywheel / flexplate with 3.00" PCD crank pattern v 3.58' on the two piece seal cranks.
