Jim Grubbs Motorsports

Wanted to post an update now that my motor has about 50k miles on it and has pulled my fifth wheel everywhere. It runs better than ever and still amazes me every time I get behind the wheel. Jim and his guys are by far the best and to anyone that might read this, don’t hesitate to have these guys build your engine! My 460 is a beast thanks to Jim…

Jim Grubbs is honestly the nicest guy I’ve ever met and puts in so much pride, dedication, and honestly into building his customers engines. Jim listens to exactly what you want the motor to do for you. JGM and the team rebuilt our ’96 Ford F-​350 460 V8 engine because we wanted more power and torque for towing. Jim turned it into a stroker motor that now produces over 400 HP and over 550 ft. lbs of torque! Jim puts so much pride into what he does and gives you honest opinions of what he recommends for the engine to operate at its highest level. I absolutely recommend going to JGM for any engine rebuild. His turn around time for the engine was only a few weeks which was amazing! I wouldn’t go anywhere else but here. Jim even encouraged us to stop by time to time to see the progress of the build and he let us watch as it was being assembled, it was awesome! Thank you so much Jim for your awesome work and dedication!

I was driving my 68 Mustang today with a 351 Windsor that was built by Jim Grubbs and had to come home and post on here for the first time in my life because it is so deserving. I have been beating on this motor and listening to it scream to 6700 rpm since 2002. Still runs like a champ and I couldn’t be any happier listening to my engine rev over and over and over and over. Thank you Jim for making my car the fun of my life since 2002. I will stop by and rev it for you to enjoy as well.

Great shop and great engine builders. I had a badly damaged pushrod and rocker arm. These guys helped me out above and beyond. Thanks guys for everything. I’ll will be returning soon…

These guys are as GREAT as it gets. Top notch engine builders. I had a Olds 442 engine (455 c.i.) built by Jim and his crew 2 years ago and it is still running perfectly. It was a stock type rebuild that they took from .040 over to .045 over so that there would be some rebuilds left in the #‘s matching block. Custom grind on the cam, all the right machining and parts put it right at 385 HP and 498 ft. lbs. or torque. Very professional and priced right. I was able to be present for the dyno runs and I got to see the #‘s with my own eyes. If you are looking for top quality rebuilds for your classic that holds up to the abuse of a lead foot, there is no other place. I give them 10 stars.
Yes you could always find your engine cheaper somewhere else but I don’t think you will ever find the Quality, support and customer service these guys provided. I have had many an engine built and none have run more consistent than the 455 they built.
Highly recommended.
A++++++ Service
A++++++ Support
A++++++ Quality
They even painted the engine the correct color for the year, make and model. All bolts where correct as well, if your into that nut and bolt restoration kinda thing. And I am.
Thanks JGM for a job done right.