Michael's Road Race LS3 Stroker
Our client Michael came to us as a referral from a local restoration shop we frequently work with. He has an autocross/roadrace 73 Camaro with full TCI suspension and had just blown up his stock junkyard LS1 at Chuckwalla the weekend before he got in touch. We discussed several options, desired goals, power numbers, and parts before settling on an LS3 stroker.
We recommended BTR rocker shafts and a Dailey Engineering dry sump alongside an ATI balancer to make sure this stroker can rip around a track for many seasons to come. This build also features a fully forged bottom end.
This engine was dressed with a FiTech intake manifold as the Camaro is a sponsored car, and will receive FiTech engine management as well. Flag Motorsports is known to be secretive about cam specs, and this engine is no different. You can take a look at the dyno sheet below to see the final (though conservative) numbers.
HIGHLIGHTS:
620hp/550ft-lbs of torque revving to past 6800 RPM
stroker crank
fully forged bottom end
Dailey Engineering dry sump setup
ATI balancer
*We were installing a Holley mid mount accessory drive for Michael, which is why three bolts were left out of the ATI. An ATI damper should always be installed with all bolts, but some aftermarket accessory drives use three of the bolts to hold the balancer pulley.
After the engine was built, we dynotuned it to complete proper break in, and make sure that our engine was running strong and with no issues before we sent it out the door. Flag Motorsports is known for our secrecy when it comes to cam specs, and this motor is no different. With a fantastic torque curve that pulls from idle to almost 7000 RPM, we can’t wait to update this build once the engine is installed in the car and Michael can go throw this Camaro around any track he can make it to with confidence.
