Probe Forged Pistons

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Flat top pistons in a Chevrolet 454 engine will generally provide compression ratios in the 8.0 to 10.0:1 range which makes them a good option for boosted engines with larger than stock camshafts. Valve reliefs are configured to work with most types of head with standard valve locations and will normally fit camshafts to well over .700 valve lift.

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Probe Forged Pistons_SRS Series_Chevrolet 454_Flat_1.270 C/H_4.250 Base Bore_-3.0cc_.990 Pin_OEM Valve Locations_W/Ring Set

P/N: 8125-1-11371

V/R for OEM Head
1.270 Compression Height
4.250 Stroke
6.385 Rod Length
.990 Wrist Pin
1/16 1/16 3/16 Ring Grooves (rings included)
Nitrous - 250 H/P
Forced Induction - 12 lbs

Available Bore Sizes: 4.250, 4.280, 4.310, 4.320, 4.350, 4.375
Price includes pistons, pins, locks and oil rail spacers (as required)

Probe Forged Pistons_SRS Series_Chevrolet 454_Flat_1.395 C/H_4.250 Base Bore_-3.0cc_.990 Pin_OEM Valve Locations_W/Ring Set

P/N: 8125-1-13728

V/R for OEM Head
1.395 Compression Height
4.000 Stroke
6.385 Rod Length
.990 Wrist Pin
1/16 1/16 3/16 Ring Grooves (rings included)
Nitrous - 250 H/P
Forced Induction - 12 lbs

Available Bore Sizes: 4.250, 4.280, 4.310, 4.320, 4.350, 4.375
Price includes pistons, pins, locks and oil rail spacers (as required)

Probe Forged Pistons_SRS Series_Chevrolet 454_Flat_1.645 C/H_4.250 Base Bore_-3.0cc_.990 Pin_OEM Valve Locations_W/Ring Set

P/N: 8125-1-13727

V/R for OEM Head
1.645 Compression Height
4.000 Stroke
6.135 Rod Length
.990 Wrist Pin
1.5 1.5 3.0 Ring Grooves (rings included)
Nitrous - 250 H/P
Forced Induction - 12 lbs

Available Bore Sizes: 4.250, 4.280, 4.310, 4.320, 4.350, 4.375
Price includes pistons, pins, locks and oil rail spacers (as required)