Home of the HI-FLOW lump kit.
Our goal is to help you build your car with what is needed for your car. Don't spend extra money on gimmicks, but check out the services I offer. We put special attention to detailed and quality products.
We can help with a 'bolt in lump port kit' or a 'performance intake lump port head' work for your inline chevy 194, 230, 250, 292 and 153,181, 2.5, or 3.0 mercury engines. Plenty of Chevy inline 6 performance parts instock and ready to go.
There is also a instructional video on how to add a bolt in lump kit to your head.
Our services also include 12 bolt rearend restoration and rebuilding. We have a wide selection of rears in stock and ready to build!
Recently, dyno testing was done on a Chevy 292 to test street speed parts. The same type testing was also done on a 250.
Thanks for visiting our site! Hopefully you will find the information you are looking for. -12Bolt Tom
Currently working on a long rod for the 292. 4340 Billit steel with a length to allow use of Our 250 pistons. This will lower the piston weight, give stronger rod and increase the rod/ stroke ratio. Hope to have it by end of June.
A 2 piece timing cover is begining to take shape.
Now it is cast, machining next.
Feel free to contact me by email or phone. Tom@12bolt.com
or phone 319 476 2172
Feel Free to sign the Guest Book. Like to hear your inline stories. Tom
mr Ghotrod6 mrhotrod6