transamman400

iTrader: (1)

Could somebody post all the specs for the LS1 and the LS6? Why the F-bod LS1 is different then the C5 LS1, and could someone explain why the 25% of the 2002 F-bods that got the LS6 have no performance advantage?

98FormulaWS6

Well im not the most knowledgeable source but the 25% that you speak of, did not receive the LS6 engine, but only the LS6 block which actual performance wise is nothing noteworthy over the LS1 block. The C5 LS1 is slightly detuned in the F-body, with a different cam, most of the performance differences between C5 and F-body are made up through the 2 cars different intake passages into the cars rather than having direct engine performance advantages. Not 100% but usually the 2 cars dyno within 10 rwhp of each other. The engines are very much the same. Chevy did not do much to detune the LS1 engine in the f-body's.

98FormulaWS6

per Corvetteactioncenter

The difference from LS1 engine to LS6

• Redesigned engine block includes quarter size slots cast into the webs underneath the travel area of the piston which reduces the amount of air the pistons pump resulting in higher rpm output.

• Redesigned positive crankcase ventilation system improves oil flow during high speed conditions.

• Redesigned air cleaner leading to reduced restriction and greater air intake.

• Redesigned camshaft profile which allows increased valve lift, therefore more air pulled into the combustion chamber which helps to increase power.

• New intake manifold and mass air flow sensor design allows more air intake.

• Higher rate valve springs and a new cylinder head design enhance the engine's breathing characteristics for increased rpm and performance.

• New cast iron exhaust manifolds are used in place of the stamped steel manifolds which improves the flow of exhaust gases. These manifolds connect to a new lightweight, titanium exhaust system which is the first ever to be used in a mass-produced automobile. This new exhaust system incorporates titanium exhaust pipes and mufflers that contain larger louver tubes which help to reduce back pressure and increase performance.

jrp

iTrader: (16)

ls1 info in sig

DANSLS1GTO

So basically the only difference that applies to the f-bodies (and GTO's which all have LS6 blocks, btw) is the second item? No performance gains by using the block, but better oil flow at performance speeds allowing better reliability?
Dan

02WS6Bird

iTrader: (2)

how do you kno if you have an LS1 or LS6 block? i heard about some bulls-eye on the block but i 4get if thats LS1 or LS6

sscamaro02

The LS1 has the bulls eye.

02WS6Bird

iTrader: (2)

wheres the bulls eye?

35th SS

iTrader: (2)

casting #12561168 for ls6block.driver side.

02WS6Bird

iTrader: (2)

damn had high hopes oh well