0
Shop By Vehicle
Top Categories
All Categories

Top Categories

All Categories


Hi, ! (Not you?)
My Account
1-800-345-4545
Track Order
Help
Chevrolet Performance 12681429

Chevrolet Performance GM Goodwrench 350ci Crate Engine 195 HP (Can produce up to 260 HP)

809-12681429

Free Shipping Ships

$1,999.99
Chevrolet Performance GM Goodwrench 350ci Crate Engine 195 HP (Can produce up to 260 HP) $1,999.99
QTY
GM Goodwrench 350ci Crate Engine
  • Replacement for 809-10067353
  • 195 HP (Can produce up to 260 HP)
  • 4-Bolt Main
  • 3-Year/100,000-Mile Warranty
  • Some exclusions may apply
  • Chevrolet Performance 12681429 Details

    Crate Engine

    Specifications

    • 4-bolt main with a 2-piece rear main seal
    • Nodular iron crankshaft
    • 4.000'' bore x 3.480'' stroke
    • Internal balance
    • LT1/LT4 powdered metal connecting rods
    • Cast aluminum pistons (dished)
    • 8.5:1 compression ratio
    • Hydraulic flat tappet cam (.383"/.401" Lift, 194 / 202 Duration @ .050", and 112° lobe separation)
    • Cast iron cylinder heads with 76cc chambers
    • 1.940'' Intake / 1.500'' Exhaust valves
    • 1.250'' diameter valve springs
    • 1.5:1 ratio rocker arms
    • 3/8'' pressed-in rocker studs
    • Block is compatible with left or right side oil dipstick (plugs for unused side included)
    • 4-quart oil pan
    • Oil pump, oil pump pickup and oil pump drive shaft installed
    • Includes timing tabs for a 6-3/4" or an 8" balancer (balancer not included)
    • Recommended spark plug: 14mm thread, .460" reach, 5/8" hex, tapered seat, projected tip (AC Delco p/n 065-R45TSAutolite p/n 417-144)
    • Not Intended for Marine Use
    • Requires p/n 809-19299222 or p/n 555-23605 Oil filter adapter (not included)
    • Not Intended for Marine Use
    • No core charge 

      Major Components NOT Included:
    • Starter
    • Flexplate/Flywheel
    • Harmonic Balancer & Bolt
    • Water Pump
    • Intake Manifold
    • Carburetor
    • Fuel Pump
    • Fuel Pump Pushrod
    • Distributor
    • Spark Plugs & Wires
    • Oil & Filter
    • Gaskets
    • Motor Mounts

    Specifications:

    Quantity
    1
    Assembled
    Yes
    Cylinder Heads Included
    Yes
    Flexplate Included
    No
    Flywheel Included
    No
    Harmonic Balancer Included
    No
    Intake Manifold Included
    No
    Oil Pan Included
    Yes
    Timing Cover Included
    Yes
    Carburetor Included
    No
    Computer Included
    No
    Distributor Included
    No
    Engine Assembly Style
    Long block
    Spark Plug Wires Included
    No
    Spark Plugs Included
    No
    Throttle Body Included
    No
    Valve Covers Included
    Yes
    Water Pump Included
    No
    Wiring Harness Included
    No
    Air Cleaner Included
    No
    Rear Main Seal Style
    2-piece
    Engine Balance
    Internal
    Cylinder Head Material
    Cast iron
    Manufacturer's Part Number:
    12681429

    Free Shipping!

    This universal 350 engine uses a brand new block and can be a replacement in most 1973-85 GM vehicles and retrofitted into virtually any vehicle. At a base horsepower of 195, the engine can produce up to 260 HP and 350 ft/lbs torque with a 4-bbl carburetor and headers. The engine is covered by a GM warranty for three years or 100,000 miles in applicable GM vehicles only. JEGS has the GM Goodwrench Chevy 350 for sale at a great price!

    Specifications

    • 4-bolt main with a 2-piece rear main seal
    • Nodular iron crankshaft
    • 4.000" bore x 3.480" stroke
    • Internal balance
    • LT1/LT4 powdered metal connecting rods
    • Cast aluminum pistons (dished)
    • 8.5:1 compression ratio
    • Hydraulic flat tappet cam (.383"/.401" Lift, 194 / 202 Duration @ .050", and 112° lobe separation)
    • Cast iron cylinder heads with 76cc chambers
    • 1.940" Intake / 1.500" Exhaust valves
    • 1.250" diameter valve springs
    • 1.5:1 ratio rocker arms
    • 3/8" pressed-in rocker studs
    • Block is compatible with left or right side oil dipstick (plugs for unused side included) 
    • 4-quart oil pan
    • Oil pump, oil pump pickup and oil pump drive shaft installed
    • Includes timing tabs for a 6-3/4" or an 8" balancer (balancer not included)
    • Recommended spark plug: 14mm thread, .460" reach, 5/8" hex, tapered seat, projected tip (AC Delco p/n 065-R45TSAutolite p/n 417-144)
    • Requires p/n 809-19299222 or p/n 555-23605 Oil filter adapter (not included)
    • Not Intended for Marine Use
    • No core charge

       JEGS Easy Kits are designed by JEGS high performance racing professionals to help you get all the performance parts you need for your race car, hot rod or truck.

    GM Warranty

    Chevy Crate Engine Break-In Guide

    12681429 is rated 4.5 out of 5 by 45.
    Rated 5 out of 5 by from For helpful notes read this! I just installed this engine on an 86 Chevy K10 pickup. Very fun experience, I did it myself in my drive way with my own tools. Learned a lot and I am happy with this 350! A couple things to know that I’d like to share to others who are interested in this engine. For starters, yes it is a Chevrolet brand, but it is made in Mexico. A little disappointing to find out when I first bought this only because I try to buy everything USA made in my vehicle. Second, you do not need to buy any oil dipstick plugs, it comes with two different kinds one off each side. At the time Jegs recommended I buy their oil plug for 10$ and it didn’t not fit tightly, too loose so couldn’t use it. I used the plugs that came with the engine. It may look like it will slide in, but it won’t. Just used a mallet and lightly tapped it a few times until it was snug and fits just great. One plug you will need (if you don’t have original stock intake manifold) is a plug for one of the cylinder heads. Passenger side is already plugged but driver side is open, for temperature sending unit, if stock. Mine was not stock so had to buy a drain 3/4 inch plug from hardware store. Another note, the recommend breather JEGS recommends will not fit! The valve cover hole is too small...so either buy a smaller grommet (which is what I did) or buy different valve covers. I picked up a different grommet for my breather from O’Reilys for a couple bucks, not a big deal. A recommendation I can’t stress enough is buy the oil pump primer tool!! It’s essential for any new engine, only a one time use but it’s worth it to have a healthy engine. I filled it with 5 quarts of oil, then I ran that tool attached to a drill for about 5 minutes BEFORE starting the engine...This made sure the engine was fully lubricated, and fired up (after having to mess with my hei distributor) And for those who don’t know, you should run the engine at about 2000 rpm’s when first starting for about 20 minutes, then drain the oil. Drive it slow and EASY, nothing past half throttle...also be sure to alternate speeds on freeways, do all of this for 500 miles, then change oil again. After that you can drive it like you stole it. Overall I am happy with this engine, I plan on having this for at least 15-20 years. Don’t forget to tune your carburetor after install!! Thanks hope this review helped everybody
    Date published: 2018-07-01
    Rated 5 out of 5 by from Good pick I bought and installed the engine about a month ago. Fired up immediately and idled perfectly . Engine is running great with a solid sound and good power response. I have no complaints. My only concern when ordering the engine was a lack of any warranty should it fail in the future. GM will only warranty if they install it at their dealerships. I confirmed this via my local dealership when I called.
    Date published: 2018-04-25
    Rated 5 out of 5 by from Fast shipping I ordered on the Black Friday sale, Monday the trucking company called, said they would deliver the next day. Tuesday the truck rolled up, and I had my crate engine sitting in my garage. Don't have it running yet but it's going together as it should. Chevrolet could have sent better instructions, Google is your friend.
    Date published: 2017-12-15
    Rated 5 out of 5 by from Chevy Motor and Jegs Bought the motor for 1976 Blazer K5 Chalet. Bought with the carb , distributor , and intake and valve covers. Arrived very quickly 3 days. The install went smoothly. Fired right up and broke in the cam as described in the instructions. Have 150 miles on it now and very impressed with the product. Great power and low end torque. Changed oil at 100 miles and am ready for a road trip to go deer hunting. This is a great product and the Jegs Tech adviser answered all my questions prior to purchase. This motor has the 260 HP easily. I think its probably closer to 285 the way it is set up with the headers. The Jegs company will get my business from here on out on products they sell. Gret product great price and a great buying experience.
    Date published: 2017-09-04
    Rated 5 out of 5 by from Best Buy for the Money I built 1932 Fords, I have bought 7 or 8 of the Crate 350 Chevrolet engines from Jegs. I have never had a problem with any of them. They start up and run extremely well, no oil leaks, great oil pressure. I install 3 deuce carb. intake for that hot rod look. It don't get any better than that. What a great way to put a hot rod together. You better believe that I would recommend a great deal like this to anyone.
    Date published: 2016-09-18
    Rated 5 out of 5 by from great motor Great dependable motor with good warranty and great price.
    Date published: 2016-08-06
    Rated 5 out of 5 by from Great Replacement Engine This is my second engine The first one has 285k on it and is still running strong I'm going to replace it before it fails and rebuild it myself and keep it for next time
    Date published: 2016-04-14
    Rated 5 out of 5 by from Great buy Great alternative to finding a machine shop witch is getting very hard to find. The freight carrier was outstanding !!
    Date published: 2016-03-03
    • y_2018, m_11, d_12, h_3
    • bvseo_bulk, prod_bvrr, vn_bulk_2.0.8
    • cp_1, bvpage1
    • co_hasreviews, tv_5, tr_40
    • loc_en_US, sid_10001_10001_3866158, prod, sort_[SortEntry(order=RATING, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
    • clientName_jegs

    Looking to do an R&R with my 1989 firebird formula 350. I'm just wondering if it would be a simple pull out, bolt on the accessory components on this engine, and put the new one in without having to buy an extra kit or anything. Are there any suggestions?

    Asked by: Bob213
    No, this is an early small block engine, you will need this type for an easy swap - https://www.jegs.com/i/ATK-Engines/059/DCN7/10002/-1
    Answered by: Rusty B
    Date published: 2018-10-18

    Camshaft specs for this engine shown as 194/202 duration & .383"/.401" lift however, these specs do not match anything in the list of factory camshafts. I was wondering if this was a typo or if you can provide a part number for this cam.

    Asked by: chevbuild
    These are the correct specifications for the cam. GM created this cam for this crate engine.
    Answered by: Rusty B
    Date published: 2018-10-05

    Does jegs provide a list of parts recommendations for the major parts not included with this engine?

    Asked by: Hendrix0687
    Yes, we offer a number of kits that have different options for your project. The individual parts are listed with each kit so you can choose what components you would like. The kits are on this page - https://www.jegs.com/p/Chevrolet-Performance/GM-Goodwrench-350ci-Crate-Engine-Packages/3867244/10002/-1
    Answered by: Rusty B
    Date published: 2018-10-04

    What is the optimal cruising RPM of this engine?

    Asked by: mitch51
    This will vary with the other components being used, but 2000 rpm will work.
    Answered by: Rusty B
    Date published: 2018-09-24

    Does the 12681429K kit work with this block?

    Asked by: Jake89
    Yes, this installation kit will work perfectly with the crate engine.
    Answered by: Rusty B
    Date published: 2018-09-13

    What is the recommended oil for this engine? I live in Florida. 90+ degrees 8 months of the year.

    Asked by: theTvirus
    This is a link to the GM recommendations - https://www.jegs.com/customerservice/chevy%20_crate_engine_break-in.pdf
    Answered by: Rusty B
    Date published: 2018-08-29

    Will this engine work in a 1960 Corvette

    Asked by: Tom1960
    Yes, this will fit the 1960 Chevy Corvette.
    Answered by: Rusty B
    Date published: 2018-08-29

    will the fit a 2007 impala ss if not can you direct me to 1 thats does thanks.

    Asked by: E_muny
    No, this will not fit - this is the replacement engine - https://www.jegs.com/i/ATK-Engines/059/DCX5/10002/-1
    Answered by: Rusty B
    Date published: 2018-08-29
    • y_2018, m_11, d_11, h_3CST
    • bvseo_bulk, prod_bvqa, vn_bulk_2.0.8
    • cp_1, bvpage1
    • co_hasquestionsanswers, tq_116
    • loc_en_US, sid_10001_10001_3866158, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
    • clientName_jegs

    Easy Kits

    Items You Need

    Some parts are not legal for use in California or other states with similar laws / regulations

    Motor Vehicles

    WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.

    Tools:

    WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.

    Electrical Cords

    WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.