When did the GM 572 big block come out?
When did the GM 572 big block come out?
The current and largest iteration of America’s favorite big block was introduced as a 572 CID unit in 1998. It produced a loud and positive reaction with the press and racers alike at that year’s SEMA show in Las Vegas and I was plumb center of that group.
Can you do a cam test on a 572?
Doing a cam test is a lot more complex than is often supposed. It is not enough to just swap one cam for another. Before putting the test 572 on the dyno to test the stock cam it was necessary to replace the stock timing gears with a Jesel fully adjustable belt drive system.
How big is the zz572 big block crate engine?
We build the ZZ572/620 with huge 4.560-inch bores and a 4.375-inch stroke. Strength comes from a latest-generation tall-deck block casting with four-bolt main caps and an all-forged rotating assembly.
What kind of belt drive does a 572 Chevy have?
Before putting the test 572 on the dyno to test the stock cam it was necessary to replace the stock timing gears with a Jesel fully adjustable belt drive system. This allows the cam to be advanced or retarded as necessary until best output is seen.
The current and largest iteration of America’s favorite big block was introduced as a 572 CID unit in 1998. It produced a loud and positive reaction with the press and racers alike at that year’s SEMA show in Las Vegas and I was plumb center of that group.
What kind of engine does the zz572 / 720r have?
The ZZ572/720R’s true value lies in its ready-to-run status when delivered. Built with the best stuff we can find, it includes an all-forged rotating assembly, aluminum cylinder heads with 113-cc intake ports, and 2.25/1.88-inch valves.
Doing a cam test is a lot more complex than is often supposed. It is not enough to just swap one cam for another. Before putting the test 572 on the dyno to test the stock cam it was necessary to replace the stock timing gears with a Jesel fully adjustable belt drive system.
Is the Chevy big block a hot rod engine?
What this means to us as hot rodders is that we can tap into the big blocks potential for more power while still keeping viable mechanical safety margin in hand so as minimally impact reliability. Fortunately for us Chevy’s big block is one of, if not the toughest, production big block engines made.
