Jeep Motor

First off I am new to the forum and look forward to all the info it contains.
I have 1967 CJ5 with the 225 V6 Buick motor in it and it has a set of headers on it that look like the hedman # 69420 that are listed for the 231 Buick. Contacted hedman to see if they would fit the 225 Buick and they told me my 225 was a AMC and not a Buick. If its a AMC then why is GM Cast in the block and heads and the block casting # says its a buick and everything we bought for the motor is for a 225 V6 Buick is what I asked them. They didnt have a clue. The headers exit through the fenderwell and outside the frame. Is there some differance in the heads where the headers bolt up that I cant see, stock 231 exhaust manifolds bolt up to my 225 buick. We really want to put headers back on it because of all the modifacations that was done on the motor for the sand drags and hill climb comp.that dad did with it. Hope someone can help.
Thanks
Don

 

They are probably confusing the Buick 231 V6 with the AMC 232 inline 6. Either that or they are mixing up Jeep history wrt the 225.

The 225 was designed tested and built by Buick for their passenger cars in the early 60s. Kaiser-Jeep needed an engine for the CJ, and some dealerships had shown that the Buick 225 was an easy swap. K-J bought the rights and tooling to the 225 and started putting them in Jeeps.

In 1970 AMC bought Jeep from Kaiser, and in 1972 started putting their own engines in the CJ and Commando. Buick realized it needed the V6, and bought the rights and tooling back from AMC. They bored out the block 0.050" to 231 cid (to be more compatible with the rest of the engines on the assembly line?) and put them into production.

I'd try a different vendor for the headers.

Welcome from Boston! Post up some pics in teh meet & greet forum if you are so inclined.

 

Everyone is right -- sorta.

The Jeep V-6 engine was originally a Buick engine. GM sold the rights, tooling, and patents to Jeep and Jeep began putting the engine in its products. At this point Jeep owned the engine.

So, technically the engine was a Jeep engine at this point, but it was a Buick product before they bought it.

At some point in the early 70's Jeep (AMC by this time) sold the engine back to GM.

 

Thanks for the response guys.