News
With our relationship with GMPP we finally received the first three LSX454 crate motors from the Performance Parts arsenal! The engines will be part of our HTR-SS454 lineup through the DeNooyer Performance Division as well as truck line and our HTR-GS454 “Heritage” 2010 Grand Sport Corvette!
Type: ………7.4L GEN4 smallblock 
Bore x Stroke……… 4.185″ x 4.125″
Compression: …. 11.0:1
Block: …………… LSX Cast Iron (Siamese Bore)
Cylinder Heads: ……… Cast Aluminum, Rectangular Intake Port w/ 6 bolt configuration.
Valve Diameter (Intake/Exhaust)………. Titanium 2.20″/Hollow Stem 1.61″
Chamber Volume: …. 70cc
Crankshaft: ….. Forged 4340 Steel w/ Nitrite Surface, 0.125″ Radius Rod Pins.
Connecting Rods: ….. Forged 4340 Steel with Bronze Small End.
Pistons: …………… Aluminum Forged 4032 alloy with Full Floating Pins.
Camshaft: ………… Hydraulic Roller Tappet (.648/.648) (236/246)
Max Engine Speed: ………….. 6500 RPM
Here is a short video clip from the head of GM Performance Parts, Dr. Jamie Meyers, talking about the parts used in this engine!
Aluminum Bore chamber volume connecting rods crate crate motor crate motors dr jamie Dr. Jamie Meyers engine Forged gm performance parts GMPP grand sport corvette horspower hydraulic roller Intake intake exhaust jaimy jamie meyers L GEN LSX Max Engine max engine speed motor performance performance division radius rod relationship Rod Pins Steel
