383ci TC78 numbers
11-01-2011, 06:24 PM
#1
383ci TC78 numbers 495hp 491ft/lbs @ 7psi thru an AUTO (A/F-11.8-12.0, timing only @ 17 degrees)
600rwhp/605rwtq @ 10psi thru an AUTO (A/F-?, timing @ 21 degrees)
LT1Boost Header Kit (stainless)
1.75" headers
3.5" DP
TC78 .96 A/r
40mm JGS Wastegate
60mm JGS BOV
4" A2A IC
3" cold side
383ci
230cc Brodix LT1 Cylinder Heads w/62cc Chambers
ARP Undercut Head and Main Studs
CP Pistons -24cc
Manley 5.700" H-Beam Connecting Rods
Callies Billet Steel Splayed 4 Bolt Main Bearing Caps
Callies "Stealth" 4340 3.75" Stroke Crankshaft - Internally Balanced
224/224 .577/.582 114 LSA
are Siemen Deka 80lb high impedance injectors.
Tranny is a built 4L60E with a 2800 stall.
Rear end is a 12 bolt with 4.11 gears.
Compression ratio should be around 9.2:1.
Cam is a little small, but I suggested that he get the 1.15A/r turbine housing swapped before changing out the cam (make sure the .96 a/r isnt choking those heads).
looks like he had boost creeping up to 14psi right when he made peak power, but the powerband was already done at that point.
Pics of kit and car:
600rwhp/605rwtq @ 10psi thru an AUTO (A/F-?, timing @ 21 degrees)
LT1Boost Header Kit (stainless)
1.75" headers
3.5" DP
TC78 .96 A/r
40mm JGS Wastegate
60mm JGS BOV
4" A2A IC
3" cold side
383ci
230cc Brodix LT1 Cylinder Heads w/62cc Chambers
ARP Undercut Head and Main Studs
CP Pistons -24cc
Manley 5.700" H-Beam Connecting Rods
Callies Billet Steel Splayed 4 Bolt Main Bearing Caps
Callies "Stealth" 4340 3.75" Stroke Crankshaft - Internally Balanced
224/224 .577/.582 114 LSA
are Siemen Deka 80lb high impedance injectors.
Tranny is a built 4L60E with a 2800 stall.
Rear end is a 12 bolt with 4.11 gears.
Compression ratio should be around 9.2:1.
Cam is a little small, but I suggested that he get the 1.15A/r turbine housing swapped before changing out the cam (make sure the .96 a/r isnt choking those heads).
looks like he had boost creeping up to 14psi right when he made peak power, but the powerband was already done at that point.
Pics of kit and car:
Last edited by RealQuick; 11-14-2011 at 09:24 AM. Reason: Wrong cubic inch engine in the title
