I installed a XE268 in a customer's 68 runner that had 9.5 to 1, DP4B with the AVS, 906 heads with standard size valves, factory exhaust manifolds. Took out a 284 Purple Shaft that gave less than 10" of vacuum. The car sounds like a new street hemi used to, has 16" of vacuum and fries the tires with a 3.23 in low gear when you mat the throttle. I installed it straight up, no cam advance.

Last edited by Transman; 04/07/15 10:57 PM.