| FAQ |
| Members List |
| Social Groups |
| Calendar |
| Search |
| Today's Posts |
|
#1
03-27-2007, 10:43 PM
|
||||
|
||||
Max Bore on a 400
Hi all, what is the maximum bore you can safely take a 400 out to? My WT code 400 is already .060 and I would like to freshen it up.
|
|
#2
03-28-2007, 01:01 AM
|
||||
|
||||
Some can be bored more than .060 and some can't. I've bored one .065 after having it soniced, but I've found blocks that couldn't go over .030. All in all, you need to have it sonic checked. I figure that a cylinder of .150" on the thrust side is the minimum for a non filled block, about .090 on the others.
__________________
Bill 64 GTO, tube chassis w/606" IA tall deck, PG & a pro geared Fab 9". 2750 lbs. [email protected]/4, [email protected]/8, 1.1981-60-ft. 8/10/08 
|
|
#3
03-28-2007, 01:17 AM
|
||||
|
||||
|
What kind of availability is there on Poncho pistons over .060?
|
|
#4
03-28-2007, 07:10 AM
|
||||
|
||||
|
You could also sleeve the block and go back to standard. It's about $50 a cylinder around here - may end up cheaper than custom pistons.
__________________
Some guys they just give up living And start dying little by little, piece by piece, Some guys come home from work and wash up, And go racin' in the street. Bruce Springsteen - Racing In The Street - 1978 |
| 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.
Linear Mode
