Thread: BBC build

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74" 2bolt vette block converted to 4 bolt
Extreme 4x4 cam w/ 226/234 duration @ .050 & .544/.564 lift
6272990 heads w/2.25/1.88 valves, ported
single plane Intake
770 truck avenger
Speed Pro forged dome pistons .060 over
Cast crank
Cast rods
9.5:1 compression

Think it should do pretty good in the mud. Anyone else have any suggestions??

just so you know chevy bbc never used a cast rod they are all forged.not much cam ? your running in low lock ? you better look at a roller solid or solid flat lifter cam your going way past what that cam will do .and the heads will like rpm

Don't have low lock but i do have low gear. It's a 205 not a 203. The cams is good up to 6,000rpm. What might you recommend, lift and duration??

i have and would go soild roller if your going to be at 5000 and past 6000 most of the time hyd cams cams cam go there but some of the stuff i have seen going in and out of mud holes get turn up were valve float can happen and with a hyd cams. you can not run the springs to help with this with out wiping the lobes off the cam .thats why i do not build BBC with flat lifter cams. at the lest a set of direct lube solid flat tappet. and a solid cam .as far as picking out a cam for you i could get you close .but i would need alot more on what your trying to do with this

I hear where your coming from but if i had a a bunch of money i would be building a roller BBC but this is a bang for your buck. Max rpm is gonna be right around 5000-5500. Thinking about getting the 4-7 swap cam now as well.

i get good used solid roller stuff for a good price crower hippo rollers .comp roller cams .and psi springs

Ordered half the rebuild kit Friday should be in today some time. All bearing, soft plugs, and rings!!!

Got some parts in!

Pick the Corvette Valve covers up at the thrift store for $20

Got some more parts, holes drilled for the coolant passeges, and lifter valley cleaned up.

Well, since you are being hard-headed about the cam, at least let me provide you with some information about preparation and installation of a flat tappet camshaft....I wrote this for the Crankshaft Coalition Wiki....
http://www.crankshaftcoalition.com/w...ips_and_tricks

well that,s good that you drilled the block for them 1037 felpros .you could teardrop that valley hole in the front thru to the cam top gear i roll the bottom of the hole and drill a 3/16 hole rigth center back across of the dist hole puts abit more oil on the cam gear if the back cam bearing is at 6:00 a not at 12:00 i use the drilled 1/4 pipe plug s in front of the block lifter galleys keeps air out and sprays more oil on timming set and block face were cam gear rides .take some 80 grit buy hand or i use a flap wheel and roll just the bottoms edge of the pistons bores they look sharp in the photo ??if so they will shave your pistons.i roll the oil hole in the rear main cap the side were the bolt hole is DO NOT make the well bigger. that is if you want thats some of the things i do.OH i hope you shoved some rags if your cam bearings are in the block ? grinding and babbit do not mix hot steel may stick you want to wash and blow to make sure there no junk under number 5 cam bearing that grooved 360 and lifter galleys feed off it. if there junk in there you know were it ends up . i would take #5 out if in.. wash and blow it . cam bearings is the last thing after all block prep