DPIGraphics said:
I'm doing an old time build using a 289 block, D0OE heads (60cc 184/154 valves) and the cam specs are lift 444int./452exh. adv. dur 206int./221exh. on a 115 lobe separation. on top is a Weiand tunnel ram with a Holley 780 mech secondaries. The tranny is a C4 with a 260 6cyl torque converter.
All of thius is going in my 1400lb "T" Bucket. What do you think about this combination and does anybody have any idea of the HP/Torque or how I might find it.
DPI.
If you have a 302 crank put it in. It fits either 5 or 6 bolt blocks. Lots of shops will trade you a 302 crank to get a 289 crank for stock.
Watch the compression with those large D0OE 60+cc chamber heads. You need a pure flattop piston and good decking to get any compression. Hope for 9+. (These heads were the hot ticket years ago for more flow, but knocked the compression to 8.3 on the 289.)
The D0OE heads do flow about 12 more intake with 144cc intake ports (289/302/5.0 had 124) identical exhausts. A little
minor clean up in the bowls/throat helps. Knock any bump out of the bottom of the exhaust port, be mindful of the contour, don't flatten it. Stock type rockers are OK.
Your duration seems wierd. 206/
221 and 115 LSA. That almost sounds like the 206/212 .444 @ 115 LSA 5.0 fuelie roller cam. That idles smoothly, has good vacuum.
If I were doing it I would go 206 to 212
on 110 LSA for a light lope at 750 rpm and better midrange torque with the carb.
My guess is you will end up with a 600 vac secondary or 600 Edelbrock carb to get away from the mechanical secondaries. Two tiny carbs would look awesome.
Engine dyno with good headers you are looking at 265 hp. I base this on the 5.0 fuelie to carb change on dynos. (similar cam) Your heads are a bit better, cam about the same. If you have a 289, maybe a few less.