Let's build a motor ! I finally got all my parts back from the machine shop today , tomorrow I start to assemble my 305 . Actually it's a 315 now , since it's bored .060" over , but the main thing is it's finally home and ready for assembly . I've spent the last couple of days port-matching my heads with the new Edelbrock Performer intake manifold and machining the tool to re-bush the loose primary throttle shaft of my Quadrajet - and installing bushings I machined in my shop . It's LOT tighter now ! Tomorrow I think will be crankshaft install day . I plan to plastigage every single bearing on the crank . I'm not taking any chance I can avoid on this build , I'm not going to get a chance to do it over . The particulars are :
305 bored .060 over and flat top pistons instead of .080 dished for estimated c/r of 9.5:1 . These are the 601 HP heads , stock on the "H" motor . Elgin e-922-p cam , intake .444/288° ex .466/298° , lobe separation 112° and 214°/224° duration at .050" . Edelbrock Performer intake manifold w/stock Quad (full rebuild) (there's a 750 Holley waiting in the wings) and small/long tube headers .
Backed up by a 700R4 with a shift kit , to a 3.42:1 rear axle . This is all in my '86 GMC 1500 LWB truck " Rojo Grande" . I'm so excited I could just s*it !