Originally Posted By SILVER67
Originally Posted By Von
Silver,

Exhaust is costing you a solid tenth, (maybe .15) , it looks like?


Yea, the coronet did seem to like the open exhaust.
The exhaust system is full 3" to the bumper with Flowmaster's
I guess the cam is somewhat healthy so i've been told


When i went open header i also put on 16" extensions
But i just used 3-1/2" for the extensions as thats the collector size.


Sorry to hijack one more time, but...Silver was is the LSA of your cam?

72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72. Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.