LS1: Difference between revisions
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The LS1 Platform was created with much research and development starting around 1995. The first LS1 Engine found it's home under the hood of the 1997 Corvette, then eventually was given to the late 4th generation F-Body platform in 1998. There is little about this engine that carries over from it's predecessors and that is the 4.4 inch bore spacing. These engines respond | http://www.geareddrives.com/images/LS1.jpg | ||
The LS1 Platform was created with much research and development starting around 1995. The first LS1 Engine found it's home under the hood of the 1997 Corvette, then eventually was given to the late 4th generation F-Body platform in 1998. There is little about this engine that carries over from it's predecessors and that is the 4.4 inch bore spacing. These engines respond very well to modifications, and there were also a few factory 'freaks' that managed to churn out an IMPRESSIVE 400bhp in stock form. | |||
''' | ''' | ||
Specs for the LS1 engine are as follows:''' | Specs for the LS1 engine are as follows:''' | ||
All aluminum light weight engine block and heads | |||
All aluminum light weight engine block and heads. | |||
Roller valve train, roller fulcrum 1.7 ratio rocker arms | Roller valve train, roller fulcrum 1.7 ratio rocker arms | ||
Bore- 3.8976in | Bore- 3.8976in | ||
Stroke- 3.6620in | Stroke- 3.6620in | ||
Displacement- 5.665 liters/ 345.69 cu | |||
Displacement- 5.665 liters/ 345.69 cu/in. | |||
Rods- Forged Steel | Rods- Forged Steel | ||
Rod Length- 6.1 inches | Rod Length- 6.1 inches | ||
Pistons- Cast Aluminum Hyperetuic/434grams each | Pistons- Cast Aluminum Hyperetuic/434grams each | ||
Compression Height- 34mm | Compression Height- 34mm | ||
Rings- Top and second use 1.5mm faces | Rings- Top and second use 1.5mm faces | ||
Combustion chamber- 67.3cc's | Combustion chamber- 67.3cc's | ||
Intake port Volume- 200cc's | Intake port Volume- 200cc's | ||
Exh port Volume- 70cc's | Exh port Volume- 70cc's | ||
Valve seat angles- 30*, 45*, and 60* | Valve seat angles- 30*, 45*, and 60* | ||
Valve Angle- 15* | Valve Angle- 15* | ||
Compression- 10.2-1 | Compression- 10.2-1 | ||
-Intake- | -Intake- | ||
Composite 'Nylon 66' Nylon and glass fiber reinforcement, or Plastic. | Composite 'Nylon 66' Nylon and glass fiber reinforcement, or Plastic. | ||
Runner Length- 15 in. | Runner Length- 15 in. | ||
Stock TB opening- 75mm. | Stock TB opening- 75mm. | ||
-Other- | -Other- | ||
Firing order- 1-8-7-2-6-5-4-3. | Firing order- 1-8-7-2-6-5-4-3. | ||
Hp/TQ- 345@5600/350@4400 (SS/Corvette) | Hp/TQ- 345@5600/350@4400 (SS/Corvette) | ||
Max Engine Speed- 6200 RPM | Max Engine Speed- 6200 RPM | ||
Latest revision as of 05:30, 29 June 2008
LS1 Engine Platform
http://www.geareddrives.com/images/LS1.jpg
The LS1 Platform was created with much research and development starting around 1995. The first LS1 Engine found it's home under the hood of the 1997 Corvette, then eventually was given to the late 4th generation F-Body platform in 1998. There is little about this engine that carries over from it's predecessors and that is the 4.4 inch bore spacing. These engines respond very well to modifications, and there were also a few factory 'freaks' that managed to churn out an IMPRESSIVE 400bhp in stock form.
Specs for the LS1 engine are as follows:
All aluminum light weight engine block and heads.
Roller valve train, roller fulcrum 1.7 ratio rocker arms
Bore- 3.8976in
Stroke- 3.6620in
Displacement- 5.665 liters/ 345.69 cu/in.
Rods- Forged Steel
Rod Length- 6.1 inches
Pistons- Cast Aluminum Hyperetuic/434grams each
Compression Height- 34mm
Rings- Top and second use 1.5mm faces
Combustion chamber- 67.3cc's
Intake port Volume- 200cc's
Exh port Volume- 70cc's
Valve seat angles- 30*, 45*, and 60*
Valve Angle- 15*
Compression- 10.2-1
-Intake-
Composite 'Nylon 66' Nylon and glass fiber reinforcement, or Plastic.
Runner Length- 15 in.
Stock TB opening- 75mm.
-Other-
Firing order- 1-8-7-2-6-5-4-3.
Hp/TQ- 345@5600/350@4400 (SS/Corvette)
Max Engine Speed- 6200 RPM
Cam Specs
1998 - 2000 Fbody 202/210 int/exh @ 0.05" duration 0.496" / 0.496" int/exh lift 116 LSA
2001 - 2002 Fbody 197/207 int/exh @ 0.05" duration 0.467" / 0.479" int/exh lift 116 LSA
