x303
10-25-2006, 12:45 AM
#2
5th Gear Member
Join Date: Jul 2003
Location: United States
Posts: 3,451
RE: x303
Valve reliefs. The x303 is pushing it. I can say it will fit in an '89 GT, I have one in mine. The '86 didn't have reliefs in the pistons though.
When you said block, is the rotating assembly with it?
When you said block, is the rotating assembly with it?
10-25-2006, 12:53 AM
#3
5th Gear Member
Join Date: Jan 2006
Location: Puerto Rico
Posts: 3,926
RE: x303
If it's a '89 block + '89 pistons you may be OK but, check Ptv...don't skip this step....it's REQUIRED to make sure. The X-303 is a B-303 with more lift ....lift doesn't affect PtV, it's the OVERLAP period that you have/need to check...... http://www.fordmuscle.com/fundamentals/pistontovalve/
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