Bits Of 427 Bbc Build Related Info

Grumpy · Jun 26, 2019

I got asked recently about the potential of the older 427 BBC and why would anyone bother, building a 427, when the larger displacement 454 and stroker versions like a 468, 489, 496 BBC can be built?
a 427 built with the correct components is a damn impressive engine, Ive built more than my share , and if you do the research before you start throwing cash into random parts youll see it has obvious potential.
now with todays technology , you can do things that were only wishful thinking back in the 1970s
and todays cylinder heads and cams are impressive and stand far above what was previously available.
what I'm suggesting is do extensive research, don,t throw a bunch of random, bargain priced parts at the project and expect great results!
the best large oval port aftermarket heads in the 265cc-315cc range with 2.3" intakes and 1.88 exhaust valves
and high compression ratios in the 10:1-13.6:1 range and roller or solid lifter cams that allow the engine to breath in the 3500 rpm-7600 rpm power band are all a good idea.

theres a great many useful links and sub links youll want to read through.
all over this web site!
like with almost anything else , do your research ,
match the drive train gearing to the application.
and use a good ignition, efficient fuel delivery system,
and a low restriction free flow exhaust system.

Grumpy · Oct 16, 2019

65cayne said:
For those interested in how the Scat rod compares to the GM rod, here are some more detailed pictures. A noticeable difference in quality overall. The more I looked and compared them, the more various details stood out. In my novice opinion, this is a great upgrade. Thanks again to Mike Lewis for the recommendation.

Stock GM light duty (non-truck, non-"thumb", non-"dot" factory rods) versus Scat Pro-Comp 2ICR6135-7/16 polished and shot peened.

Bits Of 427 Bbc Build Related Info

Grumpy

The Grumpy Grease Monkey mechanical engineer.

Grumpy

The Grumpy Grease Monkey mechanical engineer.