JMAC Engine Shop
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Items For Sale

Stock Rebuilt Engines
Performance Built Engines

Stock Rebuilt Engines

I presently don't have any stock OEM engines in preparation. I have core engines I could build as a stock engine if you need one, CONTACT ME. 

Performance Built Engines

I am way behind the demand for my engines while I'm rebuilding my shop building. For the time being I have suspended work on my building so I can focus on the getting engine out for my customers. If you are interested in picking up one of my engines for your car, contact me. Those that send me a deposit are getting priority status. Your patience is very much appreciated! 
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Every engine I have and that is in the pipeline to be machined and built is already sold. 
I don't have any complete 1500 cores available to build. But I get complete 1500 core engines back regularly and I buy up engines I find for sale on the different sites. 
If you want an engine you may want to consider sending my yours to be rebuilt. Turnaround times are approx. 9 weeks presently.

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Information on my present builds:
My rebuilds are very comprehensive builds. I buy as many new parts as are available and the rest are refreshed and machined to make as close to factory spec as I can with the exception of the thrust washers which do my best to improve, with success.
I build my engines with performance in mind. Truthfully, I build them the way I believe the engineers had in mind originally. Their designs were altered and changed to bring the engine within US emission standards. I increase the compression, enlarge intake valves and improve the lift on the cam to produce a better breathing, higher horsepower engine. I also work at building an engine of higher durability by improving the oil flow through the center main gallery to the center main bearing and to the #2 and #3 rod bearings. I have a YouTube channel where you can view my completion videos. If you "follow" my channel you will be advised of new additions from progress. To go to my YouTube channel, click here. 
If you are interested in more information, want to be placed on my list, or you want to buy the next available core coming in, contact me. Click here

High Performance Built Engines

I am currently building a customer Spitfire 1500 engine to be a high performance engine. 
We began work on this engine in December of 2024. It has been back and forth to and from the machine shop. When I took on this project it had already had the blocked decked but we didn't know how much. It had some aftermarket pistons of unknown origin in it. One of the pistons had come in contact with the head enough that there was wear on the side of the cylinder wall. We sleeved it and are fitting TR6 pistons. The block is being decked to bring the clearance to the head to approximately .004". 
​The head is being shaved down to achieve 11:1 compression and it will have a 275 duration cam. I am lightening the engine by using Maxpeeding rods and an aluminum flywheel. The rotating assembly will be balanced. It will have all new bearings, including cam bearings and tappets. It will have a new rocker shaft, high lift double springs, valve guides, double timing chain and sprockets. The intake valve seats will be ground to receive 1.438" valves. The center main oil gallery has been drilled out to 5/16" to accommodate better oil flow to the #2 and #3 rod bearings. The diametric clearance on the thrust washers will be .003-.005" of end float to resolve the thrust washer issue. It will be sealed up with all new gaskets and seals. The covers are powder-coated red and the block will be painted black like the picture. 
I will run this engine on my test run stand to check oil pressure and oil leaks. I will check compression numbers after initial run up To see the completion video, click here. 
If you need an engine, Contact me for prices and availability. ​
THE FOLLOWING ENGINES ARE CORES.
These are engines that could be rebuilt for you to your specs:
​Engine # FE82737E  Small journal 1296 (no head, rocker assy)
Engine # FK1850HE Large journal 1296 (block only)
Engine # FK5131HE Large journal 1296 
(block only)
Engine # FK33931UE Large journal 1296 (block only)
Engine # FM29439UE 1500 (block only)
Engine # FM32713UE 1500 (block only)
Engine # FP33475UE 1500 (block only)
Engine # CC31453HES 2500 TR6 6-cyl Complete engine, no valve cover
Engine # CC51251E  2500 TR6 6-cyl Complete engine

​​I don't currently have any complete 1500 core engines available.​
​Contact me for information on having one of these built for you, click here.
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  • Home
  • About
  • Services
  • For Sale
  • SHIPPING
  • Links
  • Gallery
  • Contact
  • WHAT'S NEW?
  • Testimonials