| FAQ |
| Members List |
| Social Groups |
| Calendar |
| Search |
| Today's Posts |
|
|
|
#1
12-10-2024, 08:44 PM
|
|||
|
|||
If it were mine i'd buy some .00 1 under bearings and put half on the uppers.
__________________
1979 Trans Am WS-6 .030 455 zero decked flat pistons 96 heads with SS valves 041 cam with Rhoads lifters 1.65 rockers RPM rods 800 Cliffs Q Jet on Holley Street Dominator ST-10 4 speed (3.42 first) w 2.73 rear gear __________________________________________________ _______________________________ 469th TFS Korat Thailand 1968-69 F-4E Muzzle 2 |
|
#2
12-11-2024, 12:41 AM
|
||||
|
||||
|
For a 3" main engine it's loose, assuming measurements are correct. Were these measurements taken with plastiguess or a dial bore gauge?
When i built my 4" stroker, I shot for .0025-.00275" on all the mains. I think the rear main came out about .003. I was using a Scat crank with the journals on the small side and the main bores were on the larger side of spec. So I had to use FM 4040M1 bearings, they are .001" tighter than STD.
__________________
I could explain all this to the girl at the parts store, but she'd probably call the asylum. White '67 LeMans 407/TH350/Ford 3.89... RIP Red '67 LeMans. 407/TH400/Ford 3.25 |
| The Following User Says Thank You to chiphead For This Useful Post: | ||
| Reply |
| Thread Tools | |
| Display Modes | |
|
|
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.
Hybrid Mode
