We run the Howards 234/241 .545 lift hydraulic roller in our 505.

It has run a best of 11.19 @ 121 mph at 3600 lbs. and 10.01 @ 133 on a small shot of nitrous at 3,700 lbs. All on pump gas at 10.3:1 CR and through the mufflers.

Lots of miles and passes. Zero issues! The 3rd gear pull on the street is lots of fun! up


'63 Dodge 330
11.19 @ 121 mph
Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs.
10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.