Pre-eagle engine. 4 inch bore, stroke is 4.08. Each hole sleeved. 9.5 to one compression. Comp 583 intake 586 exhaust (not the right cam but it was what I had and I was running out of time for Sick Summer). Heads are pre eagle big valve heads from inertia that are milled 30 thou and ported by them. Eddy intake with 2 500 CFM eddys. Best was 11.27 at 117. I really haven’t started tuning on it yet. I put caltracs on it and I roasted the sure grip so never got a good pass with the caltracs.