thanks, it need alot of cosmetic work, trying to get mech. finished first, right now the 340 has 34 total timmingI think I would start out about the same. 416 cubic inch should like more timing on lower end and less on top end. I used a timing retard for high gear (36 to 32 degrees) and picked up about 3 to 4 mph. Motor was 366 cubic inches. By the way the notchback is awsome!
I have a 360-408 running the KB346 with Eddys running 9.6 compression. Mine likes 30 degrees the best. I have run 28, 30, 32, 34 at the strip on a single day (15 runs in one T&T session!), and the 30 yielded the lowest times.I am running the KB745 step dish forged pistons at zero deck, closed chamber Edelbrock heads with .039" head gasket on a 4" crank SB stroker. Running 93 octane pump gas. Most people I talked to think 32 total is best but Ryan at Shady Dell thinks I should run 35. I have mine at 35 total now but plan to go to chassis dyno soon and try less total timing and see what happens. I definitely don't think I should be running more.
yep 340, x heads, it has the kb pistons ,the ones that stick .20 out of the hole, motor shop said to run .20 shim ,then a . 39 head gasket.