'97 Corvette engine, DIS

Dave Williams dave.williams at chaos.lrk.ar.us
Tue Aug 20 15:11:11 GMT 1996


-> Are the rumors true, Direct Ignition on the '97 Corvette 5.7l LT1?
-> Are there any technical tidbits available? Feed me info ...please!

 The new LS-1 engine uses eight individual coils mounted on the valve
covers, with short plug wires going down to the plugs.

 I haven't seen anything about why they went to eight coils instead of
four dual coils.  I know the Ford 4.6 uses different spark plugs for
each side of a dual coil, but most engines don't bother.

 The LS-1 is a completely new Chevrolet V8 engine with no parts
interchanging with the old small block, or the LT5 for that matter.
3.9x3.6 bore/stroke, four bolt heads, evenly-spaced ports, gerotor oil
pump driven off the front of the crank, thrust main now on center
bearing, etc.
                                                                          



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