Hartwig Performance Engines

Hartwig Performance Engines Engine rebuilding service

06/19/2026

383 stroker on the dyno this morning. Couldn’t believe the torque this thing made! Wish the horsepower was a little more but still a torque monster. I’m calling it 500hp and 490tq. Overall really happy with how everything went.
Thanks again to Craig’s dyno and machine!

4 cylinder 2.3 Saab engine. Gonna be pushing around 400hp. Balance shaft delete. Bore and resurface.
06/18/2026

4 cylinder 2.3 Saab engine. Gonna be pushing around 400hp. Balance shaft delete. Bore and resurface.

06/15/2026

Line bore on 400 Pontiac done. Time to flip it over and get the bore’s and deck cleaned up!

383 Chevrolet ready to make some noise on the dyno! Should be a beast! Mechanical roller cam. This is a very nice build!
06/10/2026

383 Chevrolet ready to make some noise on the dyno! Should be a beast! Mechanical roller cam. This is a very nice build!

400 Pontiac in for surgery and a heart transplant!
06/05/2026

400 Pontiac in for surgery and a heart transplant!

06/04/2026

455 Buick getting bored to 4.350” today!

My least favorite job to do in the shop. But it’s gotta be done. Rebuilding this 750 double pumper.
05/29/2026

My least favorite job to do in the shop. But it’s gotta be done. Rebuilding this 750 double pumper.

05/27/2026

351w stock car
Didn’t like the numbers we originally got from the cam we had in it. Went back to the drawing board and figured out how to get it to come back around. We’re right in the ballpark now! Testing is everything in racing! Some times it comes at an extra cost!
Thank you to Craig’s machine and dyno for the dyno time!

05/09/2026

Getting another cam broke in for Jeremy’s engine! Gonna let it cool down and run it a little more and get it set.

383 stroker. Got rings filed and pistons are in. H beam rods and forged crank. Going to be a very stout small block Chev...
05/07/2026

383 stroker. Got rings filed and pistons are in. H beam rods and forged crank. Going to be a very stout small block Chevrolet. Solid roller.

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23214 Co. Road 7
Hutchinson, MN
55350

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