Pontiac - Street No question too basic here!

          
 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
  #1  
Old 05-01-2026, 03:35 PM
scott70's Avatar
scott70 scott70 is offline
Ultimate Warrior
 
Join Date: May 2002
Location: maine
Posts: 2,731
Default Engine rebuild coming along.

They’ve got the crank and pistons in my 70 455 for my gto. I asked what the bearing clearances came in at and they said .0029 mains and .0028 rods with the pistons being an average .003 in the hole. Lat time I think it was like .0025 mains and 0023 rods. I run 15w-40 oil. Hopefully it’s not too loose.

__________________
72 lemans,455 e-head, UD 255/263 solid flat,3.73 gears,,,10" 4400 converter,, 6.68 at 101.8 mph,,1.44 60 ft.2007
(cam 271/278 roller)9"CC.4.11gear 6.41 at 106.32 mph 1.42 60 ft.(2009) SOLD,SOLD
1970 GTO 455 4 speed #matching,, 3.31 posi.Stock manifolds. # 64 heads.A factory mint tuquoise ,69' judge stripe car. 8.45 @ 88.1 mph on slippery street tires.Bad 2.19 60ft.Owned since 86'
 


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 02:31 AM.

 

About Us

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.

 




Copyright © 2017