Kevin2 Kevin there at a couple of different QT bellhousing that fit the same motor but are tested and not certified. This was the last big issue with QT. I am also looking at a QT for the next motor.
Here's what was beaten around from last thread
QT now said which bellhousing are 6.1 certified and do cost more than the ones tested. Most people say they bolt right up without and issues of centering to the block and crank shaft. Depending on how thick the block plate is, you MAY have to cut this for some starters to get FULL tooth engagement to the flywheel. This is a problem that Lake wood has. An OEM starter my work OK but a mini starter you need to check the contact patch. Here the other issue QT test was done with a 28 pound flywheel for the explode test. Some guys have 40 pound flywheels on there motors. I when from a 40 pounder to a 22 pounder. I have had Lakewood save my legs from a disc schattering when racing. I have Lakewoods on all my manual speed cars. As far as trannies some needs to have different input shafts to work with an FE combo and GM trans input shaft. With Lakewood You may have to cut .380" off the end of input to not destroy thrust bearing in motor. This check is VERY IMPORTANT. Lakewood is bigger, heavier, takes 2-3 hours to center and is a pain to install and remove, BUT I have not seen any pictures of blown flywheels with QT bellhousings. My clutch blowing up was in a bellhousing 8 years pass recert date for NHRA.
Note, If you cut the bottom of the bellhousing you can void the warrentity from Lake wood if they seam to say so. I have not cut the bottom off mine and run at a 4" frame height. You have to watch the road and stay out of parking lots with speed bumps. If you want to run a QT bell housing, I would reccomend that you run a light flywheel with a steel insert. Also check the clutch assembly for a cert on it for high rpms. Stock OEM ones DON'T have this and limit rpms to 6,500rpm max. Bottom line, study before buying. Make 100% sure you have the correct setup. Also pay the extra money for top of the line product that will protect your legs from a failure of a part that is spinning at what ever rpms. Think about walking the rest of your life on your own 2 good legs.
Rick L.