SDPC LS3 427 with L92 heads dyno
#23
Nice setup. A few quick questions. I'm in the market for either a 418 or 427 LS3 stroker for an offroad prerunner application. For the 4.1" stroke the extra stroke is gained in the crankshaft correct? If not what is the rod length of both strokes? The piston pin is located in the same location for both 4.0" and 4.1" strokes? Is the piston pin into the ring land, if not how close is it approx? Any pictures handy of a LS3 stroker piston with wrist pin location?
Thanks, just trying to clarify a few things.
Thanks, just trying to clarify a few things.
#24
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I have an SDPC LS3 427 in my 2002 Firebird and have never had it dynoed (very similar cam and same intake), thanks for the info!! I got the motor new in the crate from a seller on LS1Tech for a great price in 2008. SDPC builds a great motor as I race this car almost every weekend and drive it everywhere, the car has 28,000 miles and over 600 runs down the dragstrip. It seems a 4.10 stroke works just fine in a well built LS3 block! The best my car has run at 3540 raceweight is 10.34 @ 131 and 6.60 @ 104 1/8mile.
#25
Nice setup. A few quick questions. I'm in the market for either a 418 or 427 LS3 stroker for an offroad prerunner application. For the 4.1" stroke the extra stroke is gained in the crankshaft correct? If not what is the rod length of both strokes? The piston pin is located in the same location for both 4.0" and 4.1" strokes? Is the piston pin into the ring land, if not how close is it approx? Any pictures handy of a LS3 stroker piston with wrist pin location?
Thanks, just trying to clarify a few things.
Thanks, just trying to clarify a few things.
I have an SDPC LS3 427 in my 2002 Firebird and have never had it dynoed (very similar cam and same intake), thanks for the info!! I got the motor new in the crate from a seller on LS1Tech for a great price in 2008. SDPC builds a great motor as I race this car almost every weekend and drive it everywhere, the car has 28,000 miles and over 600 runs down the dragstrip. It seems a 4.10 stroke works just fine in a well built LS3 block! The best my car has run at 3540 raceweight is 10.34 @ 131 and 6.60 @ 104 1/8mile.
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#28
On the left is a 4" stroke piston, on the right is the same piston in 4.100", both are pistons for an LS2 4.005" bore by the same manufacturer with the difference being the stroke they are meant to be used with.
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800-456-0211 / PM / Facebook
WHIPPLE Superchargers, Procharger, Magnuson, Powerbond Sale, HPTuners packages!, Trickflow, AFR, PRC, CHE Trunion upgrade, $100 7.400" pushrod set, Custom Cam of your choice
800-456-0211 / PM / Facebook
WHIPPLE Superchargers, Procharger, Magnuson, Powerbond Sale, HPTuners packages!, Trickflow, AFR, PRC, CHE Trunion upgrade, $100 7.400" pushrod set, Custom Cam of your choice
Last edited by Scoggin Dickey; 12-30-2010 at 10:30 AM.