What year motor?

[McCoyAZ]

I keep toying with the idea of changing over to a small block 350 but some guys tell me to keep the 250 straight 6 I have and build it.

IF I decide on a 350 out of a wreck, what year motor did they stop using standard carburation?

I don't want to mess with computers and flow valves and all that new stuff.

Just a good old fashion 4 bolt main 350 with a standard carb.

What years should I be looking at?

Thanks in advance,

Scott

[PGSigns]

I think 86 was the first year for fuel injection in most of the chevy's. They made millions of them over the years so they are not to hard to find.
Jimmy

[Clyde65]

The inline will be costlier to rebuild/build than a 350.

The LSx 4.8/5.3 is great for me, yea it was a bit of a learning curve but now, I do nothing but regular maintenance and put gas in it. get 15MPG mixed and about 19hwy.

[Clyde65]

1987 was first for TBFI in chevy/GMC trucks, just saying

[aerotruk63]

[QUOTE=Clyde65;4899442]The inline will be costlier to rebuild/build than a 350.

Than a running 350!.... some of the engine parts are the same. Are they not?

[Wildcats_95]

Depending on your budget, you could go with a completely brand new carb 350 from GM Performance parts. Here is a link to a HO Turnkey 350...if you search around, you can go short block, long block, or crate depending on your budget. Just a thought.

http://store.gmperformanceparts.com/...-19210009--%3E

[Indian113]

Jegs has along block on sale right now for $1499.00 plus shipping. You can't rebuild a 350 if you start with a block for that. Or you can go www.car-part.com and find a low mileage one in your area at a salvage yard

[1Bad62Pro/Street]

Originally Posted by McCoyAZ

I keep toying with the idea of changing over to a small block 350 but some guys tell me to keep the 250 straight 6 I have and build it.

IF I decide on a 350 out of a wreck, what year motor did they stop using standard carburation?

I don't want to mess with computers and flow valves and all that new stuff.

Just a good old fashion 4 bolt main 350 with a standard carb.

What years should I be looking at?

Thanks in advance,

Scott

The 350 first appeared as a high-performance 295 hp L-48 option for the 1967 Chevrolet Camaro. One year later it was made available in the Chevrolet Nova, and finally in 1969 the rest of the Chevrolet line could be ordered with a 350. Many variants followed:

L-48
Years: 1967–1980

The L-48 is the original 350 cu in (5.7 L), available only in the Camaro (1967-up) or Chevy II/Nova in '68-79. In '69 it was used in almost all car lines; Camaros, Impalas, El Caminos, Chevelles & Novas. 1969 L-48's use a Hyd Cam, 4bbl Quadrajet carburetor, cast pistons, 4 bolt main #010 Blocks & #041 or 186 heads. Power output was 300HP and 380 lb·ft (520 N·m) torque. Compression ratio was 10.25-1. In 1972 the only way to get a L-48 (4bbl V8) in a Chevy Nova was to get the Super Sport Package. This is indicated by the 5th digit in the VIN being a "K". 1972 was the only year you could verify the Super Sport package by the VIN.

The L-48 V8 was the standard engine in the 1975–1980 Chevrolet Corvette. The L-48 V8 Corvette engine produced 165 bhp in 1975. Power increased to 180 bhp in 1976 and stayed the same in 1977. 1978 saw 175 bhp for California or high altitude areas and 185 bhp for everywhere else. Power increased to 195 bhp in 1979 and decreased to 190 bhp in 1980.

ZQ3
Years: 1970-1974 The ZQ3 was the standard engine in the 1970–1974 Chevrolet Corvette. It was a 300 bhp version of the 350 cu in small-block, with 10.25:1 compression and hydraulic lifters. It used a Rochester "4MV" Quadra-Jet 4-barrel carburetor. This was the first block produced that featured the larger 2.45 inch main bearing versus the older 2.30 inch main bearing in 1968/1969.

note* post 1971 blocks had a lower nickel content but thicker cylinder deck, and post 1974 heads of the small block chevy used less iron in them and are lighter weight, and less powerful because of the lower compression ratios used.
In 1971, power decreased to 270(gross)bhp and 300(gross)lb-ft of torque with 8.5:1 compression. 1972 saw 200(net)bhp and 270(net)lb-ft of torque. In 1973 power decreased to 190 bhp, but increased slightly in 1974 to 195 bhp.

L46
Years: 1969 The L46 was an optional engine for the 1969 Chevrolet Corvette. It was a higher performance version of the base 350 cu in V8 and had a 11:1 compression ratio and produced 350 bhp.

LT-1

LT-1 from a 1970 Chevrolet Camaro Z28Years: 1970–1972

The LT-1 was the ultimate 350 cu in V8, becoming available in 1970. It used solid lifters, 11:1 compression, a high-performance camshaft, and a 780 CFM Holley four-barrel carburetor on a special aluminum intake with ramhorn exhaust manifolds and a low-restriction exhaust to produce a factory rated 370 bhp (the NHRA rated it at 425 hp for classification purposes). Redline was 6500 rpm but power fell off significantly past 6200 rpm. The LT-1 was available on the Corvette, Chevrolet Corvette ZR-1, and Camaro Z28. Power was down in 1971 to 330 bhp and 360 lb-ft of torque with 9:1 compression, and again in 1972 (the last year of the LT-1, now rated using net, rather than gross, measurement) to 255 bhp and 280 lb-ft.

The "LT1" designation was later reused on a Generation II GM engine, the LT1.

L82
Years: 1973–1980

The 1973–1974 L82 was a "performance" version of the 350 producing 250 bhp and 285 lb-ft of torque from 9:1 compression. It was down to 205 bhp and 255 lb-ft of torque for 1975. It produced 210 bhp in the Corvette for 1976-1977. The 1978 L82 recovered somewhat, producing 220bhp and 260lb-ft in the Corvette and in 1979 it produced 225 bhp in the Corvette. In 1980, its final year, it produced a peak of 230 bhp. This engine was also available on the Chevrolet Camaro.

L81
Years: 1981

The L81 was the only 5.7 L (350 cu in) Corvette engine for 1981. It produced 190 bhp and 280 lb-ft of torque from 8.2:1 compression, exactly the same as the 1980 L48, but added computer control spark advance, replacing the vacuum advance

L83
Years: 1982, 1984

The 1982 L83 was again the only Corvette engine (and only available with an automatic transmission) producing 200 bhp and 285 lb-ft of torque from 9:1 compression. This was again the only engine on the new 1984 Vette, at 205 bhp and 290 lb-ft of torque. The L83 added Cross-Fire fuel injection (twin throttle-body fuel injection). Since GM did not assign a 1983 model year to production Corvettes, there was also no L83 for 1983.[6]

L98
For the new Generation IV V8, see GM L98.
Years: 1985–1992

The new 1985 L98 added tuned-port fuel injection "TPI", which was standard on all 1985–1991 Corvettes. It was rated at 230 bhp for 1985-1986, 240 bhp for 1987-1990 (245 bhp with 3.07:1 rear axle ratio (1988-1990 only)), and 245 bhp in 1991 (250 bhp with 3.07:1 rear axle). Aluminum cylinder heads (Corvette only) were released part way through the 1986 model run and continued through the end of L98 Corvette production in 1991. The L98 V8 was optional on 87–92 Chevrolet Camaro & Pontiac Firebird models (rated at 225 hp (168 kW)-245 hp (183 kW) and 330 lb·ft (447 N·m)-345 lb·ft (468 N·m)) 1987 versions had 10 hp (7 kW) and 15 lb·ft (20 N·m) more thanks to 9.5:1 compression and a change to hydraulic roller camshaft. Compression was up again in 1991 to 10:1 but output stayed the same.

LM1
The LM1 is the base 5.7 L (350 cu in) with a 4-barrel carburetor (usually with a Rochester Quadrajet) in passenger cars until 1988. Throughout its lifespan, it received either a points, electronic, and/or computer-controlled spark system, to conventional and feedback carburetors.

LM1s were superseded with the L05 powerplant after 1988.

L05
The L05 was introduced in 1987 for use in Chevrolet/GMC trucks in both the GMT400 (introduced in April 1987 as 1988 models) and the R/V series trucks such as the K5 Blazer, Suburban, and rounded-era pickups formerly classed as the C/K until 1991 which includes chassis cabs and 4-door crew cabs. Although usage was for trucks, vans, and 9C1-optioned Caprices, the L05 was also used with the following vehicles:

1992/1993 Buick Roadmaster sedan and station wagon
1990–1992 Cadillac Brougham (optional engine)
1993 Cadillac Fleetwood
1989-1993 Chevrolet Caprice 1A2-optioned special service station wagon
1992/1993 Chevrolet Caprice Wagon (optional engine)
1993 Chevrolet Caprice LTZ
1992 Oldsmobile Custom Cruiser Wagon (optional engine)
L05 usage was replaced by the LT1 after 1993 in GM B-Bodies until production ceased in 1996.

In mid 1996 the L05 was equipped with Vortec heads used in the 1996 G30.

L31
The L31 replaced the L05 in 1996 – known as the Vortec 5700. The Vortec 5700 produces 255 hp (191 kW) to 350 hp (261 kW) at 4600 rpm and 330 ft-lbf (448 N·m) to 350 ft-lbf (475 N·m) of torque at 2800 rpm. Known as the GEN 1+, this was the final incarnation of the 1955-vintage small block, ending production in 2005 with the last vehicle being a Kodiak/Topkick HD truck. Volvo Penta and Mercury Marine still produces the L31. The "MARINE" intake is a potential upgrade for L31 trucks. Using this "MARINE" intake will allow the use of common types of injectors with various flow rates while still maintaining emission compliance.

Goodwrench
The GM Goodwrench 350 crate engine comes in several variations. The cheapest version produces 195 net horsepower (with accessories), and 260 gross horsepower (without the alternator, power steering, A/C compressor, catalytic converter, factory exhaust manifold, and muffler) when used with a four barrel carburetor, dual exhaust, and headers. The low output is the result of the relatively low 8.5:1 compression ratio, restrictive cylinder heads, dished pistons, and stock camshaft profile.

All of the GM Goodwrench engines use the pre-1986 four-bolt casting molds with two dipstick locations; pre-1980 on the driver's side and post-1980 on the passenger's side. This engine was produced in Mexico since 1981 as the Targetmaster 350, and now the GM Goodwrench 350.

The 350 can be turned into a 383 stroker or a 355. The 383 can be made by purchasing a kit that comes with everything that is needed except machine work. The cylinders should also be bored .030 over. The 383 has a bore of 4.030 and a stroke of 3.75 inches.The 355 can be made by just boring the block .030 over and using the stock 350 crank. The 355 has a bore of 4.030 and a stock stroke of 3.48 inches.

3858174 350 67 Camaro
3914678 350 68-74 Pass,Chevelle,Camaro, Nova,Monte Carlo
3914678 350 69-76 Truck
3914678 350 78-79 Pass,Malibu,Camaro ,Nova
3932386 350 69 Corvette 300,350 HP
3932386 350 69-74 Pass,Chevelle, Camaro,Nova,Monte HI perf,4 bolt main
3932388 350 68-74 Pass,Chevelle, Camaro,Nova,Monte 2 bolt main
3932388 350 69-76 Truck 2 bolt main
3932442 350 67 Camaro
3955618 350 69 Corvette 300,350 HP,4 bolt main
3955618 350 69-74 Pass,Chevelle,Camaro,Nova,Monte Carlo
3955618 350 69-76 Truck
3970010 350 69 Corvette late 69,4 bolt main
3970010 350 69-79 Truck 2&4 bolt main
3970010 350 69-79 Pass,Chevelle,Camaro,Nova,Monte Carlo 2&4 bolt main
3970010 350 70 Corvette 300,350,370 HP 4 bolt main
3970010 350 71 Corvette 270,330 HP 4 bolt main
3970010 350 72 Corvette 200,255 HP 4 bolt main
3970014 350 69-77 Pass,Chevelle,Camaro, Nova,Monte Carlo 2 or 4 bolt main
3970014 350 69-79 Truck 2 or 4 bolt main
3970014 350 72 Corvette late '72,200 HP,255 HP 4 bolt main
14010207 350 80-85 Pass,Malibu,Camaro
14010207 350 80-81 Truck Light Duty
14010209 350 80-81 Pass,Malibu,Camaro
14010209 350 80-85 Truck Heavy Duty
14016379 350 77-79 Pass,Chevelle,Camaro, Nova,Monte
14088526 350 87 Camaro
14088548 350 86-88 Truck One Piece rear main seal
14093638 350 86-87 Truck One Piece rear main seal
14093638 350 87 Camaro One Piece rear main seal
14101148 350 87 Camaro One Piece rear main seal
14316379 350 69-85 Truck Two Piece Rear Main Seal
14316379 350 78-81 Pass,Malibu, Camaro,Nova One Piece Rear Main Seal

My personal favorite is the 3970010 Block!
And 1967-72 years.. Of course the 4 bolt main blocks.

Online engine resources (casting numbers, calculators, etc.)
http://67-72chevytrucks.com/vboard/s...d.php?t=382583

Project: Full Metal Yellow Jacket - "Covert...

[1Bad62Pro/Street]

Guys,

Does Autozone, Advance Auto, O'Rileys, and Napa carry rebuild kits for the GM I6?
They should....

http://www.stoveboltengineco.com/
1) Piston Rings
2) Lifters
3) Cam (Depending on the condition of the current one)
4) Oil Pump
5) Gasket Kit
6) Bearing Kit
7) Head Rebuild (Depending on the condition of the current one)

[kc0kfg]

Originally Posted by 1Bad62Pro/Street

Guys,

Does Autozone, Advance Auto, O'Rileys, and Napa carry rebuild kits for the GM I6?
They should....

http://www.stoveboltengineco.com/
1) Piston Rings
2) Lifters
3) Cam (Depending on the condition of the current one)
4) Oil Pump
5) Gasket Kit
6) Bearing Kit
7) Head Rebuild (Depending on the condition of the current one)

Forget Advance and places like that, go to rockauto.com

As for the head fond a Machine shop you can trust.

[Captainfab]

Just because an engine comes from the factory with EFI doesn't mean you can't remove the EFI and install a carb intake. The best candidate for this IMO would be the '96-'02 Vortec 350. Those have the best factory installed heads GM ever made, plus a roller cam.

[85longbed]

i got a newer tbi motor and converted to carb. easy swap and well worth it i think mine aint a vortec but it is a roller motor

[brawley]

hard to beat a 350 for power and low cost and should get better fuel milage than those 6 's unless you just want to keep it original. I would see if you could find a good engine shop in your area, they probally have some good info. and deals going on right now and you help support local buisness.

[sinnersahuayo]

Originally Posted by Captainfab

Just because an engine comes from the factory with EFI doesn't mean you can't remove the EFI and install a carb intake. The best candidate for this IMO would be the '96-'02 Vortec 350. Those have the best factory installed heads GM ever made, plus a roller cam.

what part did you use to make it a carb and dist and how about the sensor

[Budman56]

Well for my money I got my 327 rebuilt for $1100.00. the down side to a engine swap is that there are a lot of parts to be changed out and never just stop there and before you know it you have blown your buget. Bear in mine that the engine mounts will need to be changed and then you will probably want to change your trans.
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[85longbed]

Originally Posted by sinnersahuayo

what part did you use to make it a carb and dist and how about the sensor

i used a cast intake egr delete and notched the two center holes on each side to allow the bolts for the newer heads to work. Then i got a hei dist. from a mid 80s truck and a holly carb. Then the rest is just simple wireing as it is on the older small blocks. The only thing u have to run is a electric fuel pump because i belive most all the blocks doesnt have the holes drilled in the block for the mechanical fuel pumps. Its a simple conversion a lil time consuming if its your first one but its worth it the newer engines are a tad easier to come by and actually are pretty peppy.
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