Quote Originally Posted by FLATKITTY View Post
]I do not think that it is common & I tend to agree w/your sources. However, keep in mind that this engine was never designed for competition usage. The T-Bird Super Coupe was as close as it ever got to high performance.
For production cars, but Ford used the engines in the 90s for the V6 Cup series. Technically Ford used an SVO block for this that was beefed up, but more than a few folks have built clones of the engines using the standard 3.8L block and boring/stroking these to 4.5L. All the SVO parts work on a 3.8L block.



If you use the SVO block (M-6010-E380) you can get 312 inches out of them. All the SVO V6 parts were produced from like 89 to 91, so they are thin on the ground these days, but the engine has some faithful followers that use them for racing.

Information about the parts and engines is hard to get, but Super Ford did a complete tear down of the motors with a lot of technical details back in 1989. PDFs of the article were available on the web a few years ago but since have been taken down. I've got copies somewhere if you're interested.