Diamond's catalog page 47 (Big Bore Mod Motor 4 Valve 4.6L & 5.4L DISH)
p/n 30020-4
http://www.diamondracing.net/pdf/Ford-Section.pdf
Specs on the pistons
Bore Size 3.700
Wrist Pin Size 0.866
Piston Material 2618 Forged
Compression Height 1.220
Piston Ring Size 1.5 1.5 3.0mm
Piston Type Dish -15cc and fly cut for 4v heads
Rod Length - 5.933
Crankshaft Stroke - 3.543
Compression Ratio with 51cc Heads 9.3:1
Compression Ratio with 55cc Heads 8.9:1
I am selling these as I need a different cc to run higher compression. These are ideal pistons if you are doing a big bore (5.0L) engine build and will be running FI. The sooner I can sell these the sooner I can order the right ones I need and start my build.
Premium 4130 wrist pins are included.
Payment Type: Paypal or cash for local sale
Price: $650 shipped to lower 48 plus paypal fees.
Contact: Please PM me
p/n 30020-4
http://www.diamondracing.net/pdf/Ford-Section.pdf
Specs on the pistons
Bore Size 3.700
Wrist Pin Size 0.866
Piston Material 2618 Forged
Compression Height 1.220
Piston Ring Size 1.5 1.5 3.0mm
Piston Type Dish -15cc and fly cut for 4v heads
Rod Length - 5.933
Crankshaft Stroke - 3.543
Compression Ratio with 51cc Heads 9.3:1
Compression Ratio with 55cc Heads 8.9:1
I am selling these as I need a different cc to run higher compression. These are ideal pistons if you are doing a big bore (5.0L) engine build and will be running FI. The sooner I can sell these the sooner I can order the right ones I need and start my build.
Premium 4130 wrist pins are included.
Payment Type: Paypal or cash for local sale
Price: $650 shipped to lower 48 plus paypal fees.
Contact: Please PM me
Last edited:
