Originally Posted by prostreethauling
:? I have a 454 .030 over running 11.7:1 compression .660 /.666 solid roller comp cam , pro 1 345 heads , victor jr. 454r intake, 850 carb reworked by pro systems with a 1" open spacer . The torque is low do to the big heads but I want to keep them and upgrade to a 540 someday but need to make them work on my 454 for now. Should I not run a spacer or run a 4 hole spacer like a wilson taper spacer and are they worth the money. Thanks.
Dyno the engine, we some engines on our dyno loose power with the spacers. Yet some engine pick up power. The only way to tell for sure is dyno the engine, every combination is different.