Even I have trouble with this one

[Bruce Plecan]

-----Original Message-----
From: Bob McElroy <rmcelroy at cfu-cybernet.net>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Wednesday, October 07, 1998 3:34 PM
Subject: RE: Even I have trouble with this one


There was also the SR1, and I think that is what ya might be thinking
of for the earlier one.  Was late 50s, early 60s


>Actually, I believe the original ZR1 Corvette had a big-block Chevy
>(454?) under the hood. 

While it did have the ZR1 cosmetics, I thought it was called the
Snake Skinner, or some such.
Bruce     Also heard some kids stole it, and it was recovered, out
               of gas....

 For those that aren't familiar, the original ZR1
>Corvette was built back in the heyday of the musclecar, the late
>60's/early 70's (off the top of my head, I don't recall the actual model
>years for the original ZR1.) 

And the Grand Sport..................

 As with most of those cool sounding names
>(Z28, LE1, LT5, LS6, ZR1, LS1), they are Chevy's ordering code for the
>specific equipment.
>
>The more modern ZR1 used a Lotus-designed engine that was cast &
>assembled by Mercury Marine (hmm, fiberglass body and an engine built by
>a boat company;  was the ZR1 actually a "boat"?)  The LT5 engine had
>dual cams per cylinder bank, 4 valves per cylinder, for a total of 32
>valves.  To feed those 16 intake valves, it did indeed have 16 tuned
>individual intake runners.  However, only 8 of the runners were
>functional at lower engine speeds (again, I don't recall the actual
>transition point, but I think it was between 2500 - 3500 RPM.)  This was
>done to enhance low-end drivability without affecting top-end power.
>From what I have heard/read, the system did work pretty well, but it was
>a VERY expensive way to get more power.
>
>Bob McElroy
>
>PS - The more I think about, the original ZR1 may actually have been a
>small-block Chevy (350).  I think the big-block version was actually
>called a ZR2.
>
>
>-----Original Message-----
>Aren't all the ZR-1 corvettes the overhead cam jobs?.  Aren't
>all these the 16 injector dual runner intakes?.
>
>