there's a whole lot of info on the 632 CID BBC they go over,
keep in mind that just because parts bolt up and you can spin the engine with a breaker bar,
or the starter in no way means the clearance's are correct!
the guys got about $20K-$25K or more in that engine and its basically wasted funds, listen and learn
if you don't watch and listen carefully you'll miss important details
the engine, disassembly can tell you a great deal, and look carefully at the components, listen carefully,
and they point out a great many parts, strong points and flaws, and,
how they might be improved or changed to make better power
keep in mind you can learn a great deal from diagnosing a engine failure
especially if your observant and don't have any preconceived ideas
they used an aluminum block, dart big chief heads and custom tunnel ram.
notice the use of ARP studs
btw you get displacement calculated with
bore x bore x stroke x 8 (number of cylinders)x .7854-= displacement
notice they discuss swapping to these heads, as potentially having less potential issues
Pro Port BV3 Big-Block Chevy Cylinder Head HIP 11 Degrees
Edelbrock #614669 Pro Port Cylinder Head Features 11 Deg Intake Valve Angle & is Intended for High Output/Large Cubic Inch Big-Block Chevrolet Racing Engines. HIP treated. Requires Special Valve Train and Sheet Metal Valve Covers.
www.edelbrock.com
and better pistons with longer skirts, thicker piston decks , a bigger piston pin and beefier rods,
which would require a modified crank with different counter weight clearances
keep in mind almost anything you change will require matching changes in other parts
and If they had used a lifter valley shrapnel screen, and magnets and locktite on the bolt threads,
it might have reduced the internal damage.
notice they discuss trash in the oil, and parts constantly coming loose in the valve train.
yes they should have pulled , and cut open and inspected the oil filters,
for trash the second they suspected potential damage, on the filter medium.
notice they suspect piston to valve contact, from less than ideal clearances
personally ID have built a 4.5" bore x 4.5" stroke 572 displacement combo,
or a 4.56 bore x 4.5 stroke combo for 588 displacement
as it allows a much better head gasket seal area, longer rods, easier to balance crank counterweights, less piston speed stress
yes Id give up the 60 inches of displacement to gain those perks in the design.
read the links and sub links carefully
yeah I know some of you would rather...
pluck out your eyes and get buried up to your lower lip,
in a huge red ant hill. than read links
(unfortunately it's almost required to avoid making mistakes)
checking piston to valve clearances
this is an old post I got asked to repost, naturally the first step is to install and correctly degree in your cam, http://garage.grumpysperformance.com/index.php?threads/measuring-piston-dome-volume.17255/...
garage.grumpysperformance.com
some basic bbc math, to get you thinking about your potential dream bbc combos.
I recently had a discussion with one of the local guys concerning what heads and rotating assembly he should buy now that he recently purchased a tall deck (10.2") big block chevy block. he has a perfectly good 427 forged crank (3.76" stroke) but hes seriously thinking of buying a (4.25" stroke)...
garage.grumpysperformance.com
bearing clearances
Understanding Today’s Bearing Clearance Recipe ■Tech Center by Engine Builder Staff - Feb 6, 2015 0 3928 Print Email What’s needed to keep the rotating assembly rotating? It’s a recipe that includes three key ingredients: the bearing, the crankshaft and the oil. But understanding the...
garage.grumpysperformance.com
piston to bore clearance
ok first some facts (1)cylinders will not be honed to true round as they will be in use with out the use of a deck plate to simulate and duplicate the bolt clamp stress on the cylinder walls, bores in blocks without a head or deck plate with the bolts or studs torqued to spec are not nearly the...
garage.grumpysperformance.com
ring gapping and basic piston ring info YOULL NEED
YES YOU NEED TO READ THRU THE LINKS THAT'S WHAT THEY ARE THERE FOR...AND THERE'S A GREAT DEAL OF USEFUL INFO IN THOSE LINKS, don,t get over whelmed, make a list and test adjust correct or replace each problem, and check it off the list then move to the next issue, its a finite list and theres...
garage.grumpysperformance.com
building a potentially impressive BBC
think twin turbo/ intercooled /e85/ 1300 plus hp with added oil cooler etc. think of this as a quick way to blow $33K minimum :facepalm: :like: YOUR CERTAINLY NOT GOING TO BUILD SOMETHING LIKE THIS AND EXPECT IT TO RUN ON THE LOCAL GAS STATIONS PUMP LOW OCTANE FUEL heads...
garage.grumpysperformance.com
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