He we go:
Dart Little-M Sportsman SBC 400 Mains 0.000 Deck 4.165 Bore
INTAKE manifold part number: Edelbrock Air Gap Endurashine Part# 75014
COMPRESSION ratio: Static 10.38 Dynamic: 8:50 Pat Kelly Calculator
Rockers: Comp Cams Magnum 1.6 on IN/EX Part#1302-16
Lifters: Solid Lifters VT1992-16
Rings: JE File Fit
Oil pan: Milodon 7QT MIL-30900 Ceramic Coated
Oil pump: Melling Select
Bearings: V-Bearings Main & Rod
and anything else:
PIONEER Harmonic Balancer 8" Int.Bal. PIO-872003
MILODON Diamond Stripper Windage Tray MIL-32250
MILODON Lifter Valley Screen Kits MIL-23150
MILODON Oil Pan Baffle MIL-32500
MILODON Lifter Valley Baffle MIL-32610
FEL-PRO Head Gasket FPP-1014 .039
Changes I might make:
Victor Jr Intake (Endurashine)
Changing back to Comp Mag 1.5 on the EX
Timing: The posted Dyno sheet the timing was 36*, we went down to 34* loss power, went up to 37* and gain 4hp/TQ. I stop there......
I also remove rear restrictors, jet down 2 size all 4 corners and loss 7hp/9tq.
http://garage.grumpysperformance.co...ng-piston-pin-height-compression-height.5064/
Specs
if you change to much cheaper and much stronger 5.7" connecting rods the less common compression height pistons are not an issue
youll have dozens of choices in a 4.125-4.165 bore diam. with a 5.7" rod
keep in mind the old O.E.M. rods have already been through millions of stress cycles and they are a weak design
resizing, , refurbishing the original 400 connecting rods, and replacing
just the connecting rod bolts will cost far more than the SCAT 5.7" aftermarket rods that are at least TWICE as strong
.
http://www.scatcrankshafts.com/rods/
https://www.speedwaymotors.com/KB-Claimer-Chevy-400-Hypereutectic-Pistons-Flat-Top-57-Rod,33222.html
5.565 rods
http://www.herbertcams.com/espcrs5565b-3d-sb-chevy-5-565-4340-forged-h-beam-rods/
https://www.stevemorrisengines.com/...cks/sbc/sbc-4340-forged-h-beam-rods-5565.html
5.7" rods
https://www.speedwaymotors.com/Smal...el-I-Beam-Rods-5-7-Inch-Bushed-Pin,29376.html
https://www.speedwaymotors.com/Scat...340-I-Beam-Rods-5-7-Inch-Bushed-Pin,6608.html
piston for 5.7 rod
https://www.summitracing.com/parts/slp-h615cp
piston for 5.565 rods
https://www.summitracing.com/parts/slp-h400cp
btw I would NEVER reuse the 400 sbc 5.565 rods, they are at least 40 years old,
have been through unknown millions of stress cycles,
and are well known to be a rather weak design,
that was originally designed for a lower to mid rpm torque engine,
intended mostly for pick-up trucks and luxury cars with automatic transmissions.
you can purchase 5.7" connecting rods that are
easily over twice as strong as the O.E.M. connecting rods used in a stock 400 sbc
for LESS,
than it would cost to rebuild ,resize and add ARP rod bolts to the original rods
below is only one of several dozen options if your building a performance SBC
https://www.summitracing.com/parts/sca-25700716
Dart SBC 400
Scat 4340 Crank, Wiseco Piston, Eagle 6"H-Beam Rod, Bullet Solid Cam 275/279, 247/251@.050, 565/577 w/1.6 108, AFR-195 Comp, Hooker Super Comp 1-3/4 Headers, Pro-Built 700R4, ACT 3000SS, Strange 12 Bolt 3:73 Pro-System XC Carb.
Dart Little-M Sportsman SBC 400 Mains 0.000 Deck 4.165 Bore
INTAKE manifold part number: Edelbrock Air Gap Endurashine Part# 75014
COMPRESSION ratio: Static 10.38 Dynamic: 8:50 Pat Kelly Calculator
Rockers: Comp Cams Magnum 1.6 on IN/EX Part#1302-16
Lifters: Solid Lifters VT1992-16
Rings: JE File Fit
Oil pan: Milodon 7QT MIL-30900 Ceramic Coated
Oil pump: Melling Select
Bearings: V-Bearings Main & Rod
and anything else:
PIONEER Harmonic Balancer 8" Int.Bal. PIO-872003
MILODON Diamond Stripper Windage Tray MIL-32250
MILODON Lifter Valley Screen Kits MIL-23150
MILODON Oil Pan Baffle MIL-32500
MILODON Lifter Valley Baffle MIL-32610
FEL-PRO Head Gasket FPP-1014 .039
Changes I might make:
Victor Jr Intake (Endurashine)
Changing back to Comp Mag 1.5 on the EX
Timing: The posted Dyno sheet the timing was 36*, we went down to 34* loss power, went up to 37* and gain 4hp/TQ. I stop there......
I also remove rear restrictors, jet down 2 size all 4 corners and loss 7hp/9tq.
http://garage.grumpysperformance.co...ng-piston-pin-height-compression-height.5064/
Specs
- Comp Height 5.565" Rod - 1.561
- Comp Height 5.7" Rod - 1.433
- Comp Height 6.0" Rod - 1.13
- Pin Diameter - 0.9272
if you change to much cheaper and much stronger 5.7" connecting rods the less common compression height pistons are not an issue
youll have dozens of choices in a 4.125-4.165 bore diam. with a 5.7" rod
keep in mind the old O.E.M. rods have already been through millions of stress cycles and they are a weak design
resizing, , refurbishing the original 400 connecting rods, and replacing
just the connecting rod bolts will cost far more than the SCAT 5.7" aftermarket rods that are at least TWICE as strong
.
http://www.scatcrankshafts.com/rods/
https://www.speedwaymotors.com/KB-Claimer-Chevy-400-Hypereutectic-Pistons-Flat-Top-57-Rod,33222.html
5.565 rods
http://www.herbertcams.com/espcrs5565b-3d-sb-chevy-5-565-4340-forged-h-beam-rods/
https://www.stevemorrisengines.com/...cks/sbc/sbc-4340-forged-h-beam-rods-5565.html
5.7" rods
https://www.speedwaymotors.com/Smal...el-I-Beam-Rods-5-7-Inch-Bushed-Pin,29376.html
https://www.speedwaymotors.com/Scat...340-I-Beam-Rods-5-7-Inch-Bushed-Pin,6608.html
piston for 5.7 rod
https://www.summitracing.com/parts/slp-h615cp
piston for 5.565 rods
https://www.summitracing.com/parts/slp-h400cp
btw I would NEVER reuse the 400 sbc 5.565 rods, they are at least 40 years old,
have been through unknown millions of stress cycles,
and are well known to be a rather weak design,
that was originally designed for a lower to mid rpm torque engine,
intended mostly for pick-up trucks and luxury cars with automatic transmissions.
you can purchase 5.7" connecting rods that are
easily over twice as strong as the O.E.M. connecting rods used in a stock 400 sbc
for LESS,
than it would cost to rebuild ,resize and add ARP rod bolts to the original rods
below is only one of several dozen options if your building a performance SBC
https://www.summitracing.com/parts/sca-25700716
Dart SBC 400
Scat 4340 Crank, Wiseco Piston, Eagle 6"H-Beam Rod, Bullet Solid Cam 275/279, 247/251@.050, 565/577 w/1.6 108, AFR-195 Comp, Hooker Super Comp 1-3/4 Headers, Pro-Built 700R4, ACT 3000SS, Strange 12 Bolt 3:73 Pro-System XC Carb.
Last edited by a moderator: