15+ Year Contributor
- Sep 14, 2004
english racing made more than 550 on a DJ and I believe curt brown went faster than they did back in the day. Rob Hansons English Racing built 619WHP FP3065 1g - YouTube
If its the thread I think you are referring to, that was my particular set of GM274s and they were an anomaly in how ungodly off spec they ended up.
Jon told me that the sets I received included the first pair of 274s and the first set of 272s they got from their cam grinder up the street.
The rest they've since sold are going to be pretty close to advertised because they pair I had were so large and so off spec it could create major problems for someone to install straight up on stock cam gears without measuring valves and using stock springs.
So dont get too excited, yours will likely be only .408 lift, and a decent ramp rate, not exactly an fp2x or a kelford 280/276.
You did say 4k. LolOk fast spooling 600hp turbo? Try Hx40 in a stock 14cm housing.i see 30 psi right under 4k rpm with hks 280s. 2.0 e85