There is a pop off valve between the carbs. It popped once do to improper starting procedure. Never in 7 years since. There are no modifications to the intake. Power wise the Eddys with the crossram seemed very close. The closest motor to mine that I can think of was David Ross Charger. 572 from Best Engines with similar cam and compression. Dominator, 14x32 with a brake at I believe 3000lbs? 8.8x. Mine has been 9.00@3350
Doug