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Search took 0.02 seconds. Search: Posts Made By: voodoohalfbreed
Forum: Pontiac - Street 12-15-2020, 01:56 PM
Replies: 16
Views: 1,125
Posted By steve25
I could go with most all of that for a street...

I could go with most all of that for a street only rebuild, but for the lifters!
Forum: Pontiac - Street 12-15-2020, 10:42 AM
Replies: 16
Views: 1,125
Posted By mgarblik
It's important to decide what your performance...

It's important to decide what your performance goals and are and how important the "proper parts" are to you. If you have a tired 428 in the car niow and wish to put the "original 421" back in, I...
Forum: Pontiac - Street 12-15-2020, 10:40 AM
Replies: 16
Views: 1,125
Posted By John Milner
If you are running the stock dished 428 pistons...

If you are running the stock dished 428 pistons and 093 heads, your compression is likely around 10:1. If you are running a flat top with no dish, you are likely around 11:1. If you are running a...
Forum: 61-66 Big Pontiac TECH 12-03-2020, 01:03 PM
Replies: 12
Views: 1,338
Posted By b-man
The compression height (pin location in reference...

The compression height (pin location in reference to the piston top) is different between the two engines.

389 pistons won’t work, they’ll end up popping above the block deck by roughly 1/8”.
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