Senior Tech Team
Join Date: Nov 2006
Location: Houston north side
406 new build SBC wont start
New build won't start. Won't even sputter or try to run.
406 SBC, hydraulic rolller cam, 10-1 static compression, 65 cc heads and dished pistons with .010 deck, 49 quench, 780 carb, small HEI.
We are getting fuel to the cylinders.
We are getting spark at the plugs. Haven't checked voltage but nice big ignition feed wire from switch to coil.
Cranking speed is a bit slow but not bad.
Valves are not too tight, push rods can be rolled with fingers with valves closed.
Plug wires 18436572 verified.
With #1 piston near TDC, distributor pointer is at plug wire number one.
Only thing we can find is that compression checks on two cylinders show 40 pounds during cranking rotation.
Beginning to think cam not installed right? We had a degree wheel on it and thought we had it dead on??
Any ideas appreciated.
1966 Chevelle 300 2dr Sedan
385, Flat Top Hypers, Performer RPM, S.M.I. 750 Q-Jet, 72cc Dart Platinum 200cc runners, U.D. Harold 223/233 112 LSA Cam, 700-R4, PS, Manual Disc Brakes, AC, Hedman headers with 2-1/2" exhaust.
1946 Studebaker Coupe- street gasser finally underway!