Well my engine is moving forward with a forged Scat 4.0 stroke crankshaft vs the modified factory crank I had originally desired. Will still use factory heads vs aluminum as this is not meant to be a race only application. I wanted durability and a tangible performance gain in an engine I could use on the street mostly and possibly modify in the future without taking the shortblock apart. I think factory heads can be modified to put the block right up to the danger zone hp wise and since Im using a factory-alike Nunzi 068 HL flat tappet cam may mesh better for a fun to drive non-quirky street application. Im hoping the enhancements I made to the shortblock and valvetrain will allow the engine to build power to 6500rpm and be somewhat safe operating there with the 4.0 stroke.
All elements of r/a and valvetrain cryo'd by Carter Cryo - r/a balanced by Paul as well
ARP studs, main caps shotpeened, redoweled with beefier dowels found here
Forged Ross 412F flats - piston tops rod,main,cam brgs Calico'd coated
CAT 3-d 4340 6.900 H-beam ARP 8740 cap
Forged Scat 4.0 crank
Romac balancer wi aluminum outer, Romac timing set
60 psi oil pump and hardenened driveshaft cryo'd
Heads - valvetrain
7mm Ti valves 2.16 in 1.65 ex
CC roller tip rockers 1.65 and 1.52 sets (initially)
Howards 98114 inverted cone springs-locks
Looking for best flowing 90cc head 73 46, 75 6x or 67 670 possibly converted to open chamber(thinking better short turn). I have these. 670 would require most work.
My first induction system will most likely be 2 4360's on an Offy DQ low-rise. Will rebuild and get the 4360s working on my 400 enduro car singly. I like the straight runners on the "Equa-flow" intake and have a buddy who is expert at DQ linkage setup. If its going to make power to 6500 Im thinking that being right will be key. Will most likely need to port the heads to higher flow levels as well. Thinking 1.65 lift for ported heads 1.5 for unported will probably mesh best with cam, but just a guess.
Wanted 0 deck but looks like I will have to settle for -.020 since blocked is decked to 10.220 and my stack up = 10.200 (6.9+1.3+2.0). I had installed .020 undersized rod bearings to gain more room to stroke a factory crank as I had wanted a 4.040 stroke, Scat Pontiac 4.0 cranks only come in BBC rod journal so no extra .050. 440 vs 444
I liked to say Formula 444 dagnabit.