Here is one test in a 455 with the XE274 hyd cam:
https://www.motortrend.com/how-to/cc...-for-pontiacs/
You can Google up quite a few builds with the Comp XE274 Hydraulic flat tappet cam. The results will vary all over the map depending on the cylinder heads in use, induction, etc.
That and the engine dyno and/or operator used for the testing.
.
__________________
'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 )
Old information here:
http://www.hotrod.com/articles/0712p...tiac-trans-am/
Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine)
Best time 5.13 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension
https://www.youtube.com/watch?v=qDoJnIP3HgE