Ok I know that the Gen III's are the Ls1 and Ls6 motors. I have a 1988 350 2 bolt roller. WHAT is it called. Is it an LT1, LT4, ro what? What is the L98? Help me out, new to the game. Can I use any 383stroker 1 peice rear main crank?? Like the ones in the gen II motors.

 

you have the same motor that my dad gave to me #'s match and all. i also would like to know more about the motor. thanks
oh and mine is an 89 2 bolt roller.

 

you have a GEN I roller..thats it. No l98, lt1 nothing like that. If its just a block it wont have an RPO code.

 

To add its a GEN I 1pc rear main seal, it may or may not be a roller block. Meaning that it has tapped bosses for the lifter hold down spider.

 

mine has the three bosses for the lifter holdowns.

 

Roller

 

You said it, it's an L98 a late GM Gen I small block (85-91,) as is the LT1 (1970-1972 high 11:1 compression.) In 92' GM created a new genearation small block and reused the LT1 engine code.

The L98 is a 1-piece rean main seal, butI don't think you can use a Gen III crank in a Gen I.

 

Roller block, yes. Roller engine, not always. Pre-Vortec truck blocks of the Gen. I roller years.

 

You have a Gen I 1pc rear block. If it was a 350 in a plastic pig or metal sow with TPI on top, then you could call it an L98. But is still a Gen I, 1 pc. rear block.

Some of the blocks were 2 bolt, some were 4. Some had the bosses in the valley tapped as well as the holes tapped for the cam retaining plate, others did not.

You can make any block a 'roller' block, it's not really a designation, whereas the rear main configuration and generation is.

 

Just to help you a little more.

A Generation I block is anything from the beginning of the small block except the LT1 (LT-1 with hyphen is the 70-72 RPO), LT4 and the L99. Those are Generation II blocks because they use reverse flow cooling.

The LS1, LS6, LS2, and whatever else all the truck engine codes are are Generation III.

 

Well technically, unless it has the aluminum heads, it's just another 350 with TPI and not an L98. I can't remember what RPO code they gave the iron head TPI motor in the Fbody's but it's not L98.

If the motor is original to the car it will be a Roller Block, Roller Cam, Iron Headed 350, with the 1 piece rear main seal. The heads will have the "Offset" bolt pattern, and I *THINK* they should be center bolt.

If you are looking to by a rotating assembly for it, anything with a 1 piece main will work, unless you go crazy with the stroke, in which case you will need to clearance the block in some spots.

 

The engine vin digit on my 1988 IROC is 8 which is an L98, and it has iron heads.

 

What, huh? The F-bodies got a 083 iron head L98 350, Corvette Y-body for Al 113 Al L98 heads.

 

L98 means is 350 TPI. The head material isn't all-inclusive.

 

B2L Ring a Bell?



Inherently the same motor, but still, a B2L is not an L98, or it would just be called an L98.

By the way, that RPO runs 87-92.... too avoid any "My 92 is a l98 ... "

 

You're absolutely right. A B2L is not an L98.

It isn't even an engine.

Seems this has become the latest internet rumor.

The L98 is an L98. The RPO code is L98. Doesn't matter if it's iron heads or not.

B2L is not an engine code. Never has been. Never will be.

The B2L is a performance package that includes a 5.7L V8. It is NOT an engine code.

Since damn near the dawn of time, Chevy V8 engine codes (including the RPO) begin with the letter "L".

L98, LT1, LO5, LO3, LB9, etc....

See a pattern?

Look on any third gen Z28 RPO sticker. If it has B2L, it has L98 also.

From our own data base.
Notice it says "Performance Package", and then says "Engine Package". It does not say "Performance Package & Engine V8 5.7LPFI"

It excludes the two from each other by placing the word "Package" in front of each.

Just in case you didn't understand my point...

"B2L" is NOT an engine code.

 

I see - well I wonder how many third gens are running around out there with factory 350's without the RPO B2L on the sticker....

None. I'd have to say your RPO decoder is false.

But I will say, I loved your point of "Notice it says Performance Package and Engine Package?"

Why yes my dear Watson - I didn't notice it said ENGINE PACKAGE.... as oppossed to a car not having any engine package I suppose.

http://www.nastyz28.com/sbchevy/sbcrpo.html
(Engine RPO Codes)

www.hotrod.com/thehistoryof/62079/index1.html
(Pay attention to: "with less efficient exhaust routing than Corvette, debuts as RPO B2L for IROC-Z buyers")

http://www.camarosource.ca/main_new_...?url=new_site/ rare_specialty/write-ups/rare_1LE.htm
(What, even an 1LE car came with a B2L???)

www.goingfaster.com/spo/formhist.html
(It's not just a camaro thing - The most powerful engine option in 1987 was of course the B2L 5.7 liter OHV V8. This monster was tuned port injected and produced 225 horsepower at 4400rpm and a hefty 330 lbs.-ft. of torque at a lowly 2800rpm. The B2L was only available with the 700R4 automatic transmission.)


I could keep going, but I do have some better things to do with my time. If you want to say it is a baseless internet rumor, "That is sweeping the net"... that's fine.

Anyone here can go to their favorate search engine, type in b2l, and see that countless reputable sources credit it as an engine code for the TPI 350 put into the Fbody. Any further arguement from you will be had with yourself

 

D/P

 

It doesn't matter what they say, do you believe everything on the internet?

All B2L signifies it that there is a performance package 5.7 V8 in there.

From www.Camarosource.ca


L98 : 5.7 LITER V8 TPI ENGINE
B2L : PERFORMANCE PACKAGE & ENGINE PACKAGE V8 5.7L TPI

B2L/L98 V8 5.7L 4.00 X 3.48 230 @ 4400 330 @ 3200 TPI 16 9.3:1 IZ (Single exhaust)
(350)
B2L/L98 V8 5.7L 4.00 X 3.48 240 @ 4400 345 @ 3200 TPI 16 9.3:1 IZ (Dual exhaust)

L98 is the GM universal code for a 350 with tuned port fuel injection. All 350-cid 3rd Generation Camaro's have L98. B2L is the GM code for the L98 in a thirdgen. When you buy a 350-cid thirdgen you automatically get the B2L option package that includes an oil cooler (KC4), posi (G80), and generally rear disk brakes (J65), and 3:23 or 3:27 gears depending on the year. Also when an L98 went into a camaro they used different accessories, and accessory brackets than a vette. The interpretation is that B2L is an option and equipment package that contains those changes needed for installation into a thirdgen.

To say that a 350 in a thirdgen isn't really an L98 is just misinformation, if B2L took the place of L98, then the code L98 wouldn't appear on the rpo sheet. All of GM's engine codes start with an "L", B2L isn't an engine code.

Now its to rest!!!

 

How's this then, striat from GM, taken from:


**REGULAR PRODUCTION
OPTION CODES
(R.P.O.)
for GENERAL MOTORS VEHICLES

Published 10/98**

"B2L : PERFORMANCE PACKAGE & ENGINE PACKAGE V8 5.7LPFI "
"L98 : 5.7 LITER V8 TPI ENGINE "

Here are all the 'L' designations:

L01 : ENGINE, GAS, 4 CYL 1.6L MFI, OHC

L01 : ENGINE, GAS, 6 CYL, 3.4L, MFI, OHC, V6, HO

L02 : ENGINE, GAS, 4 CYL, 2.3L, MFI, DOHC

L02 : ENGINE, GAS, 4 CYL, 2.OL, MFI

L03 : 5.0 LITER V?8 TBI ENGINE

L03 : ENGINE, GAS, 8 CYL 5.OL TBI

L04 : ENGINE, DIESEL, 4 CYL, 3.0L

L05 : ENGINE, GAS, 4 CYL, 2.OL, 1 TBI

L05 : ENGINE, GAS, 8 CYL, 5.7L, 1 TBI, V8

L06 : ENGINE, GAS, 8 CYL, 4.5L, MFI, HO

L11 : ENGINE, GAS, 4 CYL, 1.9L, PREMIUM FUEL

L17 : ENGINE, GAS, 4 CYL, I.6L, 2BBL

L19 : ENGINE, GAS, 8 CYL, 7.4L, 1TBI, VB

L22 : ENGINE, GAS, 6 CYL, 4.1L, 1BBL
L25 : ENGINE, GAS, 6 CYL, 4.BL, 1BBL

L26 : ENGINE, GAS, 8 CYL, 4.9L, MFI, V8

L27 : ENGINE, GAS, 6 CYL, 3.8L, MFI, V6, HO (3800 SERIES)

L32 : ENGINE, GAS, 6 CYL, 3.4L, MFI, V6

L34 : ENGINE, GAS, 4 CYL, 2 OL, MFI, DOHC

L35 : ENGINE, GAS, 6 CYL, 4 3L, CPI, V6, 90 DEG

L37 : ENGINE, GAS, 8 CYL, 4.6L, V8 OHC

L38 : ENGINE, GAS, 4 CYL, 2.SL, 1 TBI, HO

L40 : ENGINE, GAS, 4 CYL, 2.3L, MFI SOHC

L44 : ENGINE, GAS, 6 CYL, 2.8L, MFI V6, HO

L48 : ENGINE, GAS, 4 CYL, 1.4L, MFI, PREMIUM FUEL

L49 : ENGINE, DIESEL, 8 CYL, 6. SL

L54 : ENGINE, GAS, 4 CYL, 1.8L, MFI, REG FUEL

L64 : ENGINE, FLEXIBLE FUEL(GAS/ALC), 3.1L, MFI, V6

L65 : ENGINE, DIESEL, 8 CYL, 6.5L. TURB0, HO

L67 : ENGINE, GAS, 6 CYL, 3.8L, YFI, V6, SUPERCHARGED

L68 : ENGINE, GAS, 4 CYL, 2.5L, 1 TBI, SHORTER LENGTH

L69 : ENGINE, GAS, 8 CYL, 5.OL, 4BBL, HO

L72 : ENGINE, GAS, 4 CYL, 1.3L, TBI

L73 : ENGINE, GAS, 4 CYL, I 6L, T8I, REGULAR FUEL

L78 : ENGINE, ALCOHOL, 4 CYL, 2.0L, MFI, OHC

L80 : ENGINE, GAS, 6 CYL, 2.5L, MFI, HO

L82 : EN6INE, GAS, 6 CYL, 3.lL, MFI, V6, HO

L91 : ENGINE, GAS, 4 CYL, I.6 L, UFI, WHC

L92 : ENGINE, DIESEL, 4 CYL, 1.9 L, TURBO

L93 : ENGINE, DIESEL, 6 CYL, 2.5L, TURB0

L96 : ENGINE, GAS, 8 CYL, 5.7L, MFI

L98 : 5.7 LITER V8 TPI ENGINE

LA2 : ENGINE, GAS, 8 CYL, 4.5L, MFI

LA5 : ENGINE, GAS, 4 CYL, 1.8L, MFI, OHC, TUR80

LA7 : ENGINE, DIESEL, 4 CYL, 1.5L, ISUZU

LAS : ENGINE, GAS, 6 CYL, 3.0L, TURB0

LB1 : ENGINE, GAS, 6 CYL, 4.3L, 4BBL, V6, 90 DEG
LB4 : ENGINE, GAS, 6 CYL, 4.3L, TBI, V6, 90 DEG

LB6 : ENGINE, GAS, 6 CYL, 2.8L, UFI, V6, TRANSVERSE

LB8 : ENGINE, GAS, 6 CYL, 2.8L, MFI, V6, LONGITUDINAL

LB9 : ENGINE, GAS, 8 CYL, 5.0L, TPI, HO

LC0 : ENGINE, GAS, 4 CYL, 1.8L, UFI, TUR80

LC1 : ENGINE, GAS, 6 CYL, 2.8L, 2B8L, V6, LONGITUDINAL

LC2 : ENGINE, GAS, 6 CYL, 3.8L, 4FI, V6, TURBO, HO

LC3 : ENGINE, GAS, 6 YL, 3.8L, 2B8L, V6, 90 DEG

LC5 : ENGINE, GAS, 4 CYL, 1.5L, 2B8L

LC6 : ENGINE, GAS, 6 CYL, 2 0L, MFI, OHC

LC7 : ENGINE, GAS, 8 CYL, 4 IL, MFI

LC9 : ENGINE, GAS, 4 CYL, 1.6L, 2BBL, TOYOTA

LD2 : ENGINE, GAS, 4 CYL, 2.3L, MFI, DOHC

LD4 : ENGINE, GAS, 6 CYL, 4.1L, MFI

LD5 : ENGINE, GAS, 6 CYL, 3.8L, 2B8L, V6

LD8 : ENGINE, GAS, 8 CYL, 4.6L, MFI, V8, OHC

LE2 : ENGINE, GAS, 6 CYL, 2.8L, 2BBL, V6, TRANSVERSE

LE3 : ENGINE, GAS, 6 CYL, 4.1L, 2BBL, VARAJET STANDARD

LE4 : ENGINE, GAS, 4 CYL, 2.0L, MFI, OHC

LE8 : ENGINE, GAS, 8 CYL, 7.4L, 4BBL, HO

LE9 : ENGINE, GAS, 8 CYL, 5.0L, 4BBL, HI COMP

LF3 : ENGINE, GAS, 8 CYL, 5.0L, TRUCK

LF5 : ENGINE, GAS, 8 CYL, 5.7L, 2BBL, HO

LF7 : ENGINE, DIESEL, 4 CYL, 3.6L

LF8 : ENGINE, GAS 6 CYL 3.0L, MFI, V6, REGULAR FUEL

LF9 : ENGINE, DIESEL, 8 CYL, 5.7L

LG0 : ENGINE, GAS, 4 CYL, 2.3L, MFI, DOHC, HO

LG2 : ENGINE, GAS, 6 CYL, 3.8L, SFI, V6

LG3 : ENGINE, GAS, 6 CYL, 3.8L, MFI V6, HO

LG4 : ENGINE, GAS, 8 CYL, 5.0L, 4BBL

LG6 : ENGINE, GAS, 6 CYL, 3.1L, TBI, V6,

LG7 : ENGINE, GAS, 6 CYL, 3.3L, MFI, V6

LG9 : ENGINE, GAS, 6 CYL, 2.8L, MFI, V6, TURBO
LGB : ENGINE, GAS, 8 CYL, 5.OL, 4BBL, HO

LGS : ENGINE, GAS, 6 CYL, 3.1L, 4FI, V6, TURBO

LH0 : ENGINE, GAS, 6 CYL, 3.1L, MFI, V6

LH6 : ENGINE, DIESEL, 8 CYL, 6.2L

LH7 : ENGINE, GAS, 6 CYL, 2.8L, 2BBL, 60 DEG, TRANSVERSE

LH8 : ENGINE, GAS 4 CYL, 1.8L, 1 TBI, OHC

LJ5 : ENGINE, DIESEL, 4 CYL, 1.8L

LK9 : ENGINE, GAS, 6 CYL, 3.OL, 2BEL, V6

LL2 : ENGINE, GAS, 6 CYL, 2.8L, 1 TBI V6 60 DEG, HO

LL4 : ENGINE, DIESEL, 8 CYL, 6.2L, HEAVY DUTY

LL8 : ENGINE, GAS, 4 CYL, 2.OL, 1 TBI, HO

LM1 : ENGINE, GAS, 8 CYL, 5.7L, 4BBL

LM3 : ENGINE, GAS, 4 CYL, 2.2L, 1 TBI

LM9 : ENGINE, GAS, 6 CYL, 3.8L, MFI, V6, TUR8D

LN2 : ENGINE, GAS, 4 CYL, 2.2L, MFI

LN3 : ENGINE, GAS, 6 CYL, 3.8L, MFI, V6 (3800 SERIES)

LN7 : ENGINE, GAS, 6 CYL, 3.0L, MFI V6 HO

LN8 : ENGINE, GAS, 4 CYL, 2.5L 1 TBI LONGITUDINAL

LP2 : ENGINE, GAS, 3 CYL, 1.OL TBI, OHC, SUZUKI

LPS : ENGINE, GAS, 8 CYL, 5.7L 2BBL, HO

LQ1 : ENGINE, GAS, 6 CYL, 3.4L, MFI, OHC, V6, HO

LQ2 : ENGINE, GAS, 4 CYL, 2.0L, MFI

LQ6 : ENGINE, GAS, 8 CYL, 4.5L, MFI, HO

LQ7 : ENGINE, DIESEL, 4 CYL, 2.2L, ISUZU

LQ9 : ENGINE, GAS, 4 CYL, 2.5L, 1 TBI, LONGITUDINAL

LR1 : ENGINE, GAS, 4 CYL, 1.95L, 2BBL

LR2 : ENGINE, GAS, 6 CYL, 2.8L, 2BBL, V6, 60 DEG, TRUCK

LR6 : ENGINE, GAS, 8 CYL, 4.5L, 2TBI

LR8 : ENGINE, GAS, 4 CYL, 2 .8L, 1 TBI,

LR9 : ENGINE, GAS, 4 CYL, 2.0L, 2BBL

LS3 : ENGINE, GAS, 3 CYL, 1.OL, MFI, OHC, TURBO, SUZUKI

LS5 : ENGINE, GAS, 4 CYL, 1.6L. I TBI, OHC, ALUMINUM,

LS9 : ENGINE, GAS, 8 CYL, 5.7L, 4BBL
LSA : ENGINE, DRESS KIT, 4.3L, UPS RETROFIT

LST : ENGINE, DIESEL, 4 CYL, 3.9L, CUMMINS MBT

LT1 : ENGINE, GAS, 8 CYL, 5.7L, TPI, HO

LT2 : ENGINE, GAS, 4 CYL, 2.OL, TBI, OHC

LT3 : ENGINE, GAS, 4 CYL, 2.OL, MFI, OHC, TURB0

LT5 : ENGINE, GAS, 8 CYL, 5.7L, MFI, OHC

LT6 : ENGINE, DIESEL, 6 CYL, 4.3L, V6, LONGITUDINAL

LT7 : ENGINE, DIESEL, 6 CYL, 4.3L V6, TRANSVERSE

LT8 : ENGINE, GAS, 8 CYL, 4.1L, 2T8I

LT9 : ENGINE, GAS, 8 CYL, 5.7L, 488L, HD

LU2 : ENGINE, GAS, 6 CYL, 4.3L, TBI V6, 90 DEG, HO

LV2 : ENGINE, GAS, 8 CYL, 5.OL, 4BBL

LV4 : ENGINE, GAS, 4 CYL, 1.6L, OHC, TURB0, PREMIUM FUEL

LV6 : ENGINE, GAS, 4 CYL, 1.8L, MFI

LW0 : ENGINE, GAS, 4 CYL, 1.6L, MFI, OHC, HO

LW2 : ENGINE, GAS, 8 CYL, 4.5L, MFI

LW5 : ENGINE, GAS, 6 CYL, 3.0L, TURBO

LX8 : ENGINE, DIESEL, 4 CYL, 2.OL TURBO

LY5 : ENGINE, GAS, 4 CYL 1.6L 2BBL REGULAR FUEL

LY9 : ENGINE, GAS, 3 CYL 1.OL 2BBL OHC, SUZUKI


The B2L was an options package, much like B4C, B4Z and dare I say Y84. The factory needs to know what goes with your engine. If you don'r really believe us, well, feel free to call GM historical and leave us the hell alone. I'm more apt to believe GM over you.

 

L98 = the 350 engine itself

B2L = the package that installed it into the car; includes things like the oil cooler, gear selection, etc. (each of which individually has its own RPO as well)

 

Its not true, because I dont want it to be!! :lala: :lala:

 

[QUOTE]Originally posted by GOY
[B]Well technically, unless it has the aluminum heads, it's just another 350 with TPI and not an L98. I can't remember what RPO code they gave the iron head TPI motor in the Fbody's but it's not L98.


The L98 350 TPI used in all 1985 and most 1986 Corvettes (when the convertibles were re-introduced) had what kind of heads?

Hint: Not aluminum.

The aluminum heads were standard across the entire Corvette line (coupes and convertibles) beginning in 1987.

1985 and a good portion of the 1986 Corvette TPIs were called L98.

No aluminum heads at that point. Hmmm.

Partial 1986 Corvette and 1987 through 1991 Corvette with aluminum heads were still called L98. Hmmm.

So, for the sake of arguement, wouldn't the f-body L98 TPI be more closely related to the ORIGINAL L98 from the Corvette than the later aluminum headed L98 Corvette versions?

jms

p.s. Not ALL Chevy engine codes began with L. Just most of 'em.
What was the code for the all-aluminum 427 in 1969? Or even the 32-valve all-aluminum super 'Vette from the late 1980s to early 1990s?

 

LT5 is the 32 valver

The ZL1 Al 427 is a L72

All engines start with L

 

The thing you don't get, GOY, is why would L98 RPO code be on the sticker if B2L was the engine code?

Explain that.

This is right up there with Speed Pro pistons. I bought a kit that included H345NCP+30 hyper pistons.

I can't count the number of websites I've been to, both aftermarket suppliers and message boards similar to this one, that said the compression height is 1.54"

I measured mine and got 1.564". Later I will have them pressed on and measure the deck height of my block. If the piston sits .040" or more below the deck, I have either the thickest deck on any small block ever made (stock production) or I need to learn how to measure compression height.

Again, don't believe everything you read on the internet.

Next you'll be trying to tell us that an 350 5spd combo was available from the factory.

 

Am I the only one that caught this line from the above website?

"1973 L98 350 - TPI al cyl heads
1973 LB9 305 - TPI - "

unless GM was making Tuned Port units back in the early 70s... then I say that website is not reliable.

 

Here's my RPO sticker Both codes are listed B2L & L98
B2L is 1st row 7th column, and L98 is 3rd row 8th column

 

b2l=iron heads ?

 

Iron heads, and aluminum intake, remember this is only what is on my car I can't prove it's correct, but that' what I can see, and touch.

 

No, see above it is a performance package, where a L98 and some other performance goodies were installed.

 

I would guess that "performance" is a term GM used loosely. From my understanding the b2l and l98 codes went hand in hand in the fbodies. Signifying the iron heads and other options neccesary for the 350... I'd assume that the main point of the b2l code would be the iron heads as opposed to the vettes later aluminum ones. Could be wrong though.

 

That's what I assumed you meant.

 

I had a brain fart on the LT5 (ZR1) but I stand by the ZL1 code.

Based on:

(1) "How to Hotrod Big-block Chevys" by Bill Fisher & Bob Waar. Copyright 1971, revised 1972, 1977 . Page 148 & 149-Variations on a powerful theme...

Big-block Chevrolet Versions. Grouped by displacement and Regular Production Option (RPO) Number, and in order of increasing performance.

396...

402...

427

LS-1, 1969 only. 335 bhp. Q-Jet ...

L-36, 1966-69, 390/385 bhp, Holley or Q-Jet carb...

L-68, 1967-69 Corvette, 400 bhp, identical with L-36 except for 3 Holley 2-Bbl carbs...

L-72, 1966-68, 425 bhp, Holley 800cfm 4-bbl carburetor, mechanical camshaft, big-port cast-iron heads, 11:1 CR, 4-bolt mains, forged Tufftrided crank, forged pistons, aluminum high-rise intake manifold.

L-71, 1967-69 Corvette, 435/425 bhp, Identical with L-72 except for 3-Holley 2-Bbl carbuerators on aluminum manifold.

L-89, 1968 Corvette, Similar to Corvette L-71 except for aluminum cylinder heads (non-open chamber-type).

L-88, 1967-69 Corvette, 430 bhp, Holley 850 cfm 4 bbl carburetor, high-lift mechanical cam, aluminum cylinder heads (open chamber in 1969), 12.5:1 CR, 4-bolt mains, forged Tufftrided crank, forged pistons, floating wristpins, 1/16" compression rings, 7/16" push rods, open-plenum intake manifold.

ZL-1, 1969-70 Corvette, 430 bhp, Identical features to the L-88 engine except all-aluminum cylinder block.

454... "

Granted, the 1970 Corvette reference seems a bit odd on the ZL-1 since only a handful of ZL-1 'Vettes were built (argued to be 2) compared to the 69 count 1969 Camaros with the ZL-1.

Throughout this reference book are numerous mentions to the ZL-1 without one time (I can find) referencing another Chevy code (as L98 to B2L).

(2) "Chevy Super Sports 1961-1976" by Terry V. Boyce, copyright 1981, page 157, fifth paragraph: "Some of the most exotic of all COPO Camaros were built during 1969. Factory orders for the nation's top drag racers-included Camaros with L72-type 425-hp 427's and even an incredible run of fifty ZL-1 aluminum-block 427 Camaros were reportedly assembled..."

(3) "Chevy Super Sports 1961-1976", page 174 (this section lists basics about each Super Sport model and RPO#s)---1969 Camaro, L48...350/300 hp; L34...396/350 hp; L78...396/375hp; ZL-1...427/425 hp...

(4) Many, Many, Many magazine articles in which I have as yet to see ZL-1 grouped with another code such as L98/B2L is grouped.

(5) Another "Chevy Super Sports 1961-1976" highlight is the 1963 Impala Z11 427 (based on the 409) on page 31. The RPO # is listed as Z11. On Page 170 the various RPO#s for the '63 Chevy Impala lists several "L" numbers for engines just before listing the Z11.

(6) As mentioned above, I have bought and kept (over my 48 years) many auto magazines and books (over 3000 at last count) and I cannot remember ZL-1 being anything but the engine code for the all-aluminum 427 mentioned above.

However, I do welcome any proof otherwise on this issue (as stated that ALL Chevy engine codes start with 'L").

I am not so hard-headed as to believe I cannot be wrong. In addition, I would like to be positive in this discussion.

Now, I have offered my proof (and more if needed) that NOT ALL Chevy engine codes begin with "L".

Your turn (and I won't be upset if you do prove me wrong).

jms

p.s.-The 350 TPIs of the 1980s thru early 1990s are L98s, not B2Ls. But I could be wrong there, too

 

The AllData for my 88' RPO codes show:
B2L as Performance Package, Engine Package V8 5.7L PFI (Port Fuel Injection?)
L98 engine gas, 8 cyl, 5.7L MFI (multi-port injection?)
It did give instructions on how to decode the engine using the 8th vin number and the engine RPO code it's example was Y, LV2 is equal to 307Y, OK how did they get 307 when their list of RPOs don't show the engine size? Ok it can be inferred from the Liter size, but not everyone knows this.
Doesn't PFI and MFI mean the same think, if not what's the difference?

What I was looking for is B2L, L98, 350cid, 5.7L, and TPI, all on the same line.
So I searched for engine code stamp & TPI, and found this Website. Chevy Engine Code Menu there are others.
I found a lot of L98,AT,8 in the application & VIN columns, and TPI in the BBLS (barrels?) column, but didn't find Camaro, IROC, in the same row in the Body/Comments Column. So I'm not sure what is the suffix for my 88' IROCZ. It's seems tht this data is incomplete, and it doesn't list the source, none of the sites do.

I've come to the conclusion that RPOs can be made up of other RPOs that can be further coded to suite the need.

You know what S**** this, I'mm getting a headache.

 

I actually have a 5 speed and the guy I bought it from told me it had a 350

The VIN says it's a 305, but then again, it also has a 2bbl carb. If someone has an answer or wants to see some pictures, please let me know.


-dusty89camaro

 

Heres the window sticker for a 88 iroc B2L 350. No mention of L98. The only similarities between the two engines are the cubic inch displacement,the advertized horsepower ratings and the induction system. The heads, crank, block, rods ,pistons and yes the cam are the same as those used in taxi cabs and light duty trucks.

 

So if I follow your thinking, the LT1 in my 93 isn't an LT1 because it has some different parts on it for the F body. What's the equivalant B2L option code for LB9 cars?

 

My 1988 IROCZ console sticker that I posted list 69 RPO codes, including the B2L, and L98.
Your window sticker only list 1/4" of those, and I'm sure the window sticker on my car when it wa new didn't list them all either.

 

yea, all 4 of my thirdgens had 60-80 RPO codes, that build sheet dosen't have enough to be a complete list of them. by the way...all pre-80's iron blocks started with a L and all alluminum blocks started with a Z....in the early-mid 80's ('84 comes to mind...I'm not 100% sure though) they were all consoladted to start with a L. codes that start with a B, from my experance, are profromance packages, but it's defenatly not an engine code

 

I know this is an old thread but I didn't want to make a new one for somthing so stupid. My motor is a 5.0 L v8 4 bbl what does this mean? Meaning what size and what is 4bbl. I think its a 305

 

5.0 L (liter) is displacement, meaning 305 cubic inch
V8 meaning it's 8 bores/pistons (4 on each bank)
4 bbl meaning it has a carb with 4 butterflies/venturies whatever you want to refer to them (openings).

 

Ok thanks that's what I thought but assent sure. I also didn't know that 86 models had carbs I thought that is when they agent to throtle bodies. Am I wrong or where they just starting to change over?

 

it was called a B2L

 

The 4-barrel carbs were still used on the '87 LG4 F-cars, and the '88 Caprice still offered the 4 barrel carb on a few select options, though I forget the details. Probably the police 350 / 5.7L, because most got the LO3.

 

Is that with regard to the iron headed TPI 350 motors in the turdgens? Mine had a designation of L98, just like every other one out there. B2L was a package designation, that's it, nothing more.