http://kb-silvolite.com/calc.php?action=piston_comp
http://victorylibrary.com/mopar/rod-tech-c.htm
BBC deck heights are NOMINALLY 9.8" on most blocks and 10.2" on SOME truck blocks
theres also AFTERMARKET 10.6" and 11" deck blocks
most SBC blocks have a 9" deck height, all those blocks tend to have an additional .020-.025 deck height to allow machining the deck to get it 100% square with the crank centerline.
this caculator above might help
just some info
lets say you want to install a 4.25" stroke crank and a 6.135" length rod in a 454 block to build a 489 BBC the deck or compression height is 1.52" like the piston displayed below.
http://kb-silvolite.com/performance.php ... s&P_id=121
now youve got the option of useing a longer 6.385 "connecting rod and a shorter 1.27" deck or compression height piston to build the same basic 489 BBC.
http://kb-silvolite.com/forged.php?acti ... s&P_id=373
OR we can build a 427 BBC with those longer 6.385" rods and these pistons
http://kb-silvolite.com/forged.php?acti ... s&P_id=358
NOTICE THE SAME 1.52 DECK HEIGHT
which you should easily see allows that 1.27 deck height piston with a 6.5" long aftermarket connecting rod.
http://www.scatcrankshafts.com/PDFs/ScatCrank07.pdf
LONGER RODS AND SHORTER PISTONS TEND TO BUILD LIGHTER TOTAL ROTATING ASSEMBLIES
Mahle pistons are designed for specific applications with the alloy that is best suited for that particular application.
but keep in mind the better versions of forged pistons tend to have the advantage in both strength and heat tolerances
......................Piston Alloy Comparison
4032...................................................... 2618
High silicon............................................No silicon
Low expansion........................................expansion
Tighter piston-to-wall clearance................More Piston-to-wall clearance needed
Quiet Operation......................................Noise when cold
Less ductile............................................More ductile
More stable & consistent.........................Higher resistance to detonation
Longer life cycles....................................Shorter life cycles
Harder...................................................Softer
http://victorylibrary.com/mopar/rod-tech-c.htm
BBC deck heights are NOMINALLY 9.8" on most blocks and 10.2" on SOME truck blocks
theres also AFTERMARKET 10.6" and 11" deck blocks
most SBC blocks have a 9" deck height, all those blocks tend to have an additional .020-.025 deck height to allow machining the deck to get it 100% square with the crank centerline.
this caculator above might help
just some info
lets say you want to install a 4.25" stroke crank and a 6.135" length rod in a 454 block to build a 489 BBC the deck or compression height is 1.52" like the piston displayed below.
http://kb-silvolite.com/performance.php ... s&P_id=121
now youve got the option of useing a longer 6.385 "connecting rod and a shorter 1.27" deck or compression height piston to build the same basic 489 BBC.
http://kb-silvolite.com/forged.php?acti ... s&P_id=373
OR we can build a 427 BBC with those longer 6.385" rods and these pistons
http://kb-silvolite.com/forged.php?acti ... s&P_id=358
NOTICE THE SAME 1.52 DECK HEIGHT
which you should easily see allows that 1.27 deck height piston with a 6.5" long aftermarket connecting rod.
http://www.scatcrankshafts.com/PDFs/ScatCrank07.pdf
LONGER RODS AND SHORTER PISTONS TEND TO BUILD LIGHTER TOTAL ROTATING ASSEMBLIES
Mahle pistons are designed for specific applications with the alloy that is best suited for that particular application.
but keep in mind the better versions of forged pistons tend to have the advantage in both strength and heat tolerances
......................Piston Alloy Comparison
4032...................................................... 2618
High silicon............................................No silicon
Low expansion........................................expansion
Tighter piston-to-wall clearance................More Piston-to-wall clearance needed
Quiet Operation......................................Noise when cold
Less ductile............................................More ductile
More stable & consistent.........................Higher resistance to detonation
Longer life cycles....................................Shorter life cycles
Harder...................................................Softer