Originally Posted by 88blackgt

just though i would help you guys out w/ a little fox history. 85 was the first year for forged pistons, 86 was the first year for the 8.8. 87 was the first year for EFI(SD) and MAF came in 89(88 for cali cars). also hyper pistons came about due to increasing emissions standards(cost probably had some to do with it too). hyper pistons have less thermal expansion.

Originally Posted by 88blackgt

haha in that case you need to do a little more reading on the subject, as the switch to hyperpathetic pistons was a common thread among auto manufacturers as emissions regulations increased. the major advantage is in the clearances for the motor. tighter piston to wall clearances allowed for less blowby and lower cold-start emissions(hardest test to pass). not to mention the reduced blowby keeps the o2s alive longer and the emissions system happy. hyper pistons also reduce scuffing

Originally Posted by Bob Cosby

One minor point of clarification....86 was the first year for EFI. 87 changed to E7 heads and got a corresponding 25 hp boost.

Bob

Originally Posted by speedshifterNC

Termi, since you're the only one worth talking to: I should have included the 3v's b/c that's the "new" block I was refering to and I hear they won't hold more than 500rwhp. Your block on the other hand is rock solid. I have a friend with one that's atleast a 10 sec. car with way more than 600 horses. I knew the location bit was coming so we can meet at Mooresville's 1/8 mile. It will have to be next week however as I'm out of money(hope you wanna run for fun). You have a better chance of running who you want to down there.