440ci LS1 Piledriver 
Want maximum capacity out of your LS1 equipped vehicle. Our 440ci version is a lot of engine for any application. These big engines are quite tractable even with large camshafts, big inductions and high compression ratios. We offer the 440's in power levels from a mild 550 bhp (410kw) version for exceptional daily use manners up to very radical versions for more extreme owners. This version shown here was built for a customer who named the engine for us...the PILEDRIVER! Still a very tractable but powerful version with typical moderately rough idle, pump 98 octane fuel capability and torque to rival a Mack Truck.
The Piledriver version has CNC ported GM Performance parts heads with final intake port volume size of close to 280cc's. True Big Block numbers with air flow to match. Over 11.5:1 compression ratio, our latest design LSCH-945 camshaft with 245/257 degrees @.050" intake/exhaust, .560" lift and ground on 114 degree lobe centres. This like all our LS1 style grinds do not sacrifice power and torque output for smooth valve train action and quiet operation. The bottom end features a brand new GM alloy 427 (7 litre)LS7 cylinder block that has been fully prepped and fitted with our 4340 forged steel 4.100" stroke crank, our latest design 6.1" "H" beam 4340 steel con rods and custom made Diamond Racing forged pistons and rings. The top end is completed with GM's latest L92 square port intake and our own custom made billet alloy 95mm throttle body.
The Piledriver is not cheap at a baseline $25,000 (depending on outright or changeover) but with 626 bhp (467 kws)@ 6000 rpm and 594 ft.lbs torque (805nm)@5200 rpm in a very driveable and still fuel efficient combination, you would be hard pressed to find better value for money in the "big" engine stakes. No blowers, intercoolers, turbos, plumbing or headaches here. The toughest parts in an engine swap that ends up looking like a stock LS1 and in fact is physically identical in all dimensions so fits straight in anywhere you had an LS1 or LS2. With a 2750 rpm torque figure of 468 ft.lbs you can forget about needing stiffer diff ratios or hi stall torque converters.
Both the Piledriver 440 and the fantastic Sledgehammer 427 are both also available in components only packages for those wishing to assemble and build their own versions. A fully prepped LS7 block is $5500.00, 427 crank kits start at $3100.00, 440 crank kits with the best parts are $4500.00, GM Performance parts heads fully prepped for the 427 are $3500.00 including the special offset intake rocker arms required. The CNC ported 440ci versions of these heads are $5000.00 fully prepared. The matching intake manifold, fuel rails injectors and billet 90mm throttle body induction package is $4500.00 to suit the 427ci Sledgehammer. The same induction package for the Piledriver 440ci engine with fully port matched intake runners to suit the CNC ported heads and our custom billet 95mm throttle body is $6500.00 Our matching camshafts are only $550.00 You have a choice of over 50 grinds.
Newest cam profiles...LS1
LSCH-928 228 in 236 exh @.050” lift .551”in .551”ex 114 degree LC
LSCH-936 236 in 246 exh @.050” lift .551”in .551”ex 114 degree LC
LSCH-945 245 in 257 exh @.050” lift .560”in .560”ex 114 degree LC
LSCH-955 255 in 264 exh @.050” lift .560”in .560”ex 114 degree LC
LSCH-961 261 in 268 exh @.050” lift .600”in .600”ex 115 degree LC
LSCH-968 266 in 275 exh @.050” lift .600”in .600”ex 114 degree LC
Note: All our LS1 camshafts have now come down in price! They are $550.00 each
Our matching conical valve spring sets are $330.00 and chrome moly retainers...$120.00
Want a full list of our full range of cam profiles? Go to http://www.comeracing.com/products/cams/
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