The codes L88, LT-1 and so on desingnate a specific engine and hp. A don't know many (none of the hp ratings) of them but i'm sure you will have a huge list soon. Gonna make myselve one

What is the 396/325? L-34? l8r


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OWNER OF 66 CHEVELLE MALIBU
Check out page dedicated to resto of my chevelle. still being made.
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Ok, LS6 is nothing more than an Regular Production Option code(RPO code) given to all General Motors corporation options. There are literatly thousands of these RPO codes. There are some that are very well known to collectors, restorers and hot rodders alike. Some of these codes include.
LS5 - 454cu 365hp
LS6 - 454cu 450hp
Z28 - Special performance package for Camaros
LT1 - Special high performance 350cu engine installed in Corvettes and Z28 Camaros.

Some of the more lesser known codes include:
G67 - Controller for Air Shocks
GT2 - 2.29 rear axle ratio
GS6 - Differential Carrier, 4.56 rear axle ratio
V75 - Traction Dispenser set-up
C48 - Heater Delete

All the LS# codes prior to 1976 - There are many more codes that start with L or LS they just don't have a digit in the 3rd spot, they have a letter.
LS1 - LS1 427cu 4bbl - Regular Fuel
LS3 - 1970 - 402cu 330hp, 71 - 402cu 300hp...240hp in '72
LS4 - 454cu-235hp - 4bbl
LS5 - 454cu 365hp ... 270hp in '72
LS6 - 454cu 450hp
LS7 - 454cu Special High performance - (not believed to ever have been installed in a production car) This was sold over the counter as a crate engine.

After 1976
LS1 - 1997-present - Aluminium 5.7 liter V8 currently being used in Camaros, Firebirds and Corvettes.
LS2 - 1985-1986 4.3 liter diesel V6
LS3 - 1987-1993 1.0 or 1.2 liter 3cyl turbo
LS4 - 1976 7.4 liter (454cu) V8 - 215hp
LS5 - 1980-1981 4.3 liter V8 2bbl
LS9 - 1977-1986 350cu V8.

Hope this helps. If you have any questions, just post them.



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Bryan Shook
www.geocities.com/motorcity/speedway/6673
Favorite Quote: Some people have shrinks. Some people have their garage.

 

66, the 396/325 was a L-35. The L-34 was the 396/350 or 360HP from 66-69.
jmw

 

I know a guy whos builing a LS7 engine and putting it into his 70 chevelle SS396 or 454

can someone tell me the specs of LS7 and horsepower rating, tourque, etc.
THanks

 

Here is the infromation that I have on the LS7.

Turbo Jet 454cu 450hp 490lb-ft LS7
Comp. ratio - 11.25
Cam Specs
Gross lift - Intake - 0.0584, Exhuast - 0.626
Net figures - Intake - 0.56, Exhuast - .600
Carb - 780cfm Holley Model #3967481 w/ 1.686 primary and secondary bores or 850cfm Holley w/ 1.75 bores.
Intake - Same as the ZL-1 intake

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Bryan Shook
www.geocities.com/motorcity/speedway/6673
Favorite Quote: Some people have shrinks. Some people have their garage.

 

Here's the list from the Chevy parts catalog thru 1975 models
L11 - L4 170 CID
L13 - l4 140 CID
L14 - V8 307 CID
L22 - L-6 230 CID
L26 - L-6 250 CID
L30 - V8 327 CID
L34 - V8 396 CID HI-PERF
L35 - V8 396 CID
L36 - V8 427 CID
L46 - V8 350 CID
L62 - P-6 HI-PERF
L63 - P-6 SPEC HI-PERF
L65 - V8 350 CID 2BBL CARB
L66 - V8 396 CID 2 BBL CARB
L71 - V8 427 CID SPEC HI-PERF 3-CARB
L72 - V8 427 CID SPEC HI-PERF
L73 - V8 396 CID SPEC HI-PERF
L78 - V8 396 CID SPEC HI-PERF
L79 - V8 327 CID SPEC HI-PERF
L82 - V8 350 CID
L85 - L-6 250 CID 4 BBL CARB
L87 - P-6 TURBO CHARGED
L88 - V8 427 CID HEAVY DUTY
L89 - V8 ALUMINUM CYLINDER HEADS*
L90 - LOW COMPRESSION 6 CYL - EXPORT
L92 - LOW COMPRESSION V8 - EXPORT
LF6 - V8 400 CID 2 BBL CARB
LF7 - V8 327 CID 2 BBL CARB REG FUEL
LM1 - V8 350 CID 4 BBL CARB REG FUEL
LO8 - V8 ENGINE EMMISON ID CHART (label)
LS1 - V8 427 CID 4 BBL CARB REG FUEL
LS3 - V8 400 CID 4 BBL CARB
LS4 - V8 454 CID 4 BBL CARB
LS5 - V8 454 CID 4 BBL CARB HI-PERF
LS6 - V8 454 CID 4 BBL CARB SPEC HI-PERF
LS7 - V8 454 CID 4 BBL CARB HEAVY DUTY
LT1 - V8 350 CID SPEC HI-PERF
LT4 - V8 400 CID 4 BBL CARB
LV1 - V8 4.8 LITER
LY3 - 122 CID L-4

Note - L89 is the aluminum head option and not a engine option as is often stated.

Some other usefull info:
Options by family prefix letter-
A/C and heater - C
Axle, front related - F
Axle, rear realted - H, G
Brakes - J
Bunper - V
Defogger, rear glass - C
Chassis Elec - U, T
Engine realted - K, L
Exterior ornaments - B
Fuel, Exhaust, emmissions - N
Glass - A
Lamps - C
Locks - A
Mirrors - D
Molding and ext emblems - B
Radiator and grill - V
Radio related - U
Roof, ornatmentation and trim - C
Seats etc - A
Springs - 6, 7 , 8, 9
Steering - N
Stripes - D
Suspension - F
Transmission - M
Wheel and Tire - P, Q, R
Wiper etc - C

There is also a further breakdown for the 2nd digit but it too complicatd to go into.




[This message has been edited by elcamino (edited 03-25-2000).]

 

ELCAMINO72,
I have an LS-7 in my 66 Chevelle Rag Top and I can guarantee you the compression is 12.25 : 1, and not 11.25 : 1. I prefer to run Sunoco 110 octane racing fuel to avoid valve damage.

Dan

 

The infromation that I posted on the LS7 was taken from last months issue of Muscle car review. Thanks for the heads up.

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Bryan Shook
My website with lots of classic cars
1972 Chevrolet El Camino Options, Codes & Pricing
Favorite Quote: Some people have shrinks. Some people have their garage.