http://www.carcraft.com/techarticles/cc ... index.html
http://www.carcraft.com/techarticles/cc ... index.html
http://www.carcraft.com/techarticles/cc ... index.html
http://www.carcraft.com/techarticles/14 ... _for_4000/
http://www.carcraft.com/techarticles/14 ... or_jr.html
http://www.dragzine.com/tech-stories/engine/ultimate-guide-to-budget-bbc-cylinder-heads-under-2000/
https://www.chevydiy.com/oil-lubrication-systems-guide-big-block-chevy-engines/
http://garage.grumpysperformance.com/index.php?threads/on-my-3rd-rear-main-seal-bbc.11084/
theres some decent info on making 450 hp with peanut port heads
BTW DON,T FORGET TO USE A LARGER CAPACITY BAFFLED OIL PAN,the stock oil pans on most peanut port head engines are barely adequate
viewtopic.php?f=69&t=2900&p=44642&hilit=peanut+port#p44642
FINDING A DECENT BBC CAM ON A TIGHT LSA CAN BE A PROBLEM AT TIMES< HERES A FEW
http://www.claysmithcams.com/big-block-chevy-11/
mark iv blocks
mark v blocks
(keep in mind that ALL '91 and later Gen.V and Gen.VI big blocks come with 4-bolt main caps. The two-bolt big blocks are no longer in production
MANY BUT NOT ALL aftermarket head designs have been modified to work on both the early MARK IV 1965-90 and later MARK V & VI blocks 1991-later.)
BTW, , on BIG BLOCKS the oil pumps and oil filter adapters are different due to the block oil filter recess and rear seals being different
GEN 4 or MARK IV
GEN V and VI
http://scatcrankshafts.com/
common BB CHEVY piston compression heights are
1.270"
1.395"
1.520"
1.645"
1.765"
remember the blocks deck height, minus the piston pin height minus 1/2 the crank stroke will equal the required connecting rod length
OR
the blocks deck height, minus the connecting rod length, minus 1/2 the crank stroke. will equal the required piston pin height
yes its common for a combo to have the piston deck height located .010-.015 above or below the deck of the block so you'll need to select a head gasket thickness that compensates, too allow your engine to get a .038-.044 piston deck to cylinder head QUENCH DISTANCE.
btw the most horse power per dollar spend, in an old school big block engine ,
is generally available from a 540 cubic inch combo, (4.25" stroke and 4.5" bore) and about a 13.5:1 compression ratio BBC,
with a individual runner 8 stack FUEL INJECTION intake OR DUAL QUAD TUNNEL RAM COMBO,
its rather easy to get 650-700 hp and 700 ft lbs of torque from a decent combo,
you'll want a decent roller cam with maybe 25-258 degrees at .050 lift duration and maybe a .650-.680- lift and 1.7:1- 1.8:1 ratio roller rockers
if you select decent approximately sized 335cc-340cc-355cc port aluminum heads ,
and 2.25" headers with about a 33-36" primary and an approximately a 18"-20" long and 3.5"-4" diameter collector.
yeah, exceptionally well tunned combos with good matched parts frequently can exceed that power level, but thats the base line to shoot for
http://www.carcraft.com/techarticles/cc ... index.html
http://www.carcraft.com/techarticles/cc ... index.html
http://www.carcraft.com/techarticles/14 ... _for_4000/
http://www.carcraft.com/techarticles/14 ... or_jr.html
http://www.dragzine.com/tech-stories/engine/ultimate-guide-to-budget-bbc-cylinder-heads-under-2000/
https://www.chevydiy.com/oil-lubrication-systems-guide-big-block-chevy-engines/
http://garage.grumpysperformance.com/index.php?threads/on-my-3rd-rear-main-seal-bbc.11084/
theres some decent info on making 450 hp with peanut port heads
BTW DON,T FORGET TO USE A LARGER CAPACITY BAFFLED OIL PAN,the stock oil pans on most peanut port head engines are barely adequate
FINDING A DECENT BBC CAM ON A TIGHT LSA CAN BE A PROBLEM AT TIMES< HERES A FEW
http://www.claysmithcams.com/big-block-chevy-11/

mark iv blocks

mark v blocks

(keep in mind that ALL '91 and later Gen.V and Gen.VI big blocks come with 4-bolt main caps. The two-bolt big blocks are no longer in production
MANY BUT NOT ALL aftermarket head designs have been modified to work on both the early MARK IV 1965-90 and later MARK V & VI blocks 1991-later.)
BTW, , on BIG BLOCKS the oil pumps and oil filter adapters are different due to the block oil filter recess and rear seals being different
GEN 4 or MARK IV

GEN V and VI

http://scatcrankshafts.com/

common BB CHEVY piston compression heights are
1.270"
1.395"
1.520"
1.645"
1.765"
remember the blocks deck height, minus the piston pin height minus 1/2 the crank stroke will equal the required connecting rod length
OR
the blocks deck height, minus the connecting rod length, minus 1/2 the crank stroke. will equal the required piston pin height
yes its common for a combo to have the piston deck height located .010-.015 above or below the deck of the block so you'll need to select a head gasket thickness that compensates, too allow your engine to get a .038-.044 piston deck to cylinder head QUENCH DISTANCE.
btw the most horse power per dollar spend, in an old school big block engine ,
is generally available from a 540 cubic inch combo, (4.25" stroke and 4.5" bore) and about a 13.5:1 compression ratio BBC,
with a individual runner 8 stack FUEL INJECTION intake OR DUAL QUAD TUNNEL RAM COMBO,
its rather easy to get 650-700 hp and 700 ft lbs of torque from a decent combo,
you'll want a decent roller cam with maybe 25-258 degrees at .050 lift duration and maybe a .650-.680- lift and 1.7:1- 1.8:1 ratio roller rockers
if you select decent approximately sized 335cc-340cc-355cc port aluminum heads ,
and 2.25" headers with about a 33-36" primary and an approximately a 18"-20" long and 3.5"-4" diameter collector.
yeah, exceptionally well tunned combos with good matched parts frequently can exceed that power level, but thats the base line to shoot for
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