Frequently Asked Questions

Q: How many LS5 convertibles were built in 1970 (1971 or 1972)?
A: There is no known breakdown of LS5 engines in Chevelles by body style or how many were sold with a 4-speed vs. the TH400 automatic, or came with optional gear ratios, etc. and will probably never be known unless I can register all LS5 engines in Chevelles ever sold, which isn't in the realm of possibility for obvious reasons. See How Many LS5s Based On Body Style Were Sold? for more insight on LS5 numbers vs. body styles.


Q: Didn't all LS5 Chevelles have gauges and a tachometer?
A: No. The Instrument Panel Gauges, or Special Instrumentation, sold under RPO U14 was always an option regardless of year. The gauge pods for fuel, speedometer, and optional clock were round as opposed to the linear sweep speedometer of a non-SS optioned Chevelle but the gauge package was still an option. The clock was  standard equipment on LS5 optioned Monte Carlo SS and included as part of the U14 Instrument Panel Gauge option although it was still available as a separate option in all Chevelles
{Note: The same holds true for such options as bucket seats, console, and cowl induction hoods. Bucket seats and consoles were standard Malibu options and not limited to the LS5; the cowl induction hood could be ordered with any engine in either the 1970 Z25 SS396/Z15 SS454 or 1971 & 1972 Z15 SS Equipment option packages.}


Q: Is my LS5 real?
A: This can be tricky at best. Partially because there are differing opinions on what is necessary to make an LS5 optioned Chevelle 'real.' To some, 'real' means the car has the correct and original engine it was born with and can be matched to the build sheet. To some, it means if the build sheet says it was born with the LS5 engine, it doesn't (relatively) matter that the engine has been replaced for one reason or another; whether by a dealer under warranty or an over-avid enthusiast back in the day due to out of warranty breakage. Consider if the car has a warranty engine with CE code or a 1974 454 truck motor dressed to appear as a 1970/1971/1972 LS5 engine, but has build sheet that is original to the car as noted by the VIN sequence and other information of the sheet matching the trim tag.

As far as the LS5 Registry is concerned, the paperwork is the primary objective in the registry and not whether the Chevelle retains the original engine.


Q: How many 1970 Z20 SS454 Monte Carlos were sold?
A: The Z20 SS454 Monte Carlo 454 sold 3,833 units. These 454 engines are not part of the number of LS5 engines calculated for the number of the other Z15 optioned Chevelles.


Q: How many 1971 Z20 SS454 Monte Carlos were sold?
A: The Z20 SS454 Monte Carlo 454 sold 1,919 units. These 454 engines carried the same CPD suffix code as Z15 optioned Malibus. Total 454 production for 454 Malibus (7,583) and Monte Carlos (1,919) is 9,502 units.