Senior Tech Team
Join Date: Sep 2008
Location: Smiths Station, Alabama
Re: 427 chevy big block build up??
I am another Kevin but just bought a new motor for my 67ss chevelle that was proffessionally built, makes 607 hp, 627 ft/lb. on the engine dyno. It is at the edge of streetability but just right imho. I run a 700r4 trans with a corvette 2075 rpm stall converter. 3.42 rear gear. 15x8 corvette rallys all around with bfg 235-60-15 tires (not enough in the back for sure !)
block > 1968 427 4 bolt main bored .060. has low block fill.
crank > scat forged 4.25 stroke
rods > eagle h-beam 6.385 lg
pistons > 10.5:1 srp
heads > edlebrock rpm oval ports
cam/components > comp cam xs290s-10 ft solid lifter, crane solid lifters, comp .080 ht pushrods, magnum roller tip rockers.
intake > weiand stealth
carb > 850 dp (dont even think about a 750 vs for this beast !)
ignition > msd street fire hei dist/cdi ignition box. (cheap route but it works)
if you have done the math you can see I now have a 496 stroker motor. I run an engine oil cooler on it since it has the low block fill. this (low block fill) was a HUGE concern for me prior to investing but have discovered this also keeps the water temp low when cruising (160-180 degrees). use an oil temp gage and dont shower down on it until the oil reaches around 200 degrees.
motor has a very sassy idle but does fine with the aformentioned torque converter.. revs like a small block but has the killer low end torque we all know only comes from a big block....
havent taken it to the track but if the thick black prints (thru all 4 gears) it leaves on the pavement are any indication it should do quite well with some big ol slicks on it. the cam is ideal for a serious street car....hope this helps....motor on !!