Thread: LM1 Crate Engine - Anyone Know the Specs?

Tweet

This is my first engine related post - with many more to come.

I have an LM1 crate engine and I cannot find any specs on it. Does anyone have experience with these engines or know where I can get specs?

I am new to SBC's, so there will be many more questions if anyone has time to answer.

Thanks!

Originally Posted by Saxman

This is my first engine related post - with many more to come.

I have an LM1 crate engine and I cannot find any specs on it. Does anyone have experience with these engines or know where I can get specs?

I am new to SBC's, so there will be many more questions if anyone has time to answer.

Thanks!

http://www.camaros.org/lm1.shtml
http://www.nastyz28.com/camaro/z28lm1.html

see if this helps.

Heres what I found on it....Looks like its the stock truck replacement engine..

Have you heard about the GM Goodwrench Crate Engine 350? All new components assembled into a NEW 4 – bolt main block. Not Remanufactured / Not Rebuilt! An all-new 350 Chevy engine backed by the best warranty in the USA!

Engine Name: 350 LM1
Horsepower: 249 HP @ 5,000 RPM
Torque: 304 Ft/Lbs @ 3,500 RPM
Compression Ratio: 8.50 to 1
Block: 4 – Bolt, 2 Piece Rear Seal, 4.000” Bore
Crankshaft: Cast Nodular 3.480” Stroke
Heads: Cast Iron, 76cc
Valves: 1.940” / 1.500”
Camshaft lift: 0.390” / 0.410” Hydraulic
Duration @ 0.050”: 195° / 202°
Intake: Not Included

This engine can also be used in 1986 model pick-ups. The flexplate (flywheel) must also be changed. Use flexplate #471598.

Originally Posted by HWORRELL

Heres what I found on it....Looks like its the stock truck replacement engine..

Have you heard about the GM Goodwrench Crate Engine 350? All new components assembled into a NEW 4 – bolt main block. Not Remanufactured / Not Rebuilt! An all-new 350 Chevy engine backed by the best warranty in the USA!

Engine Name: 350 LM1
Horsepower: 249 HP @ 5,000 RPM
Torque: 304 Ft/Lbs @ 3,500 RPM
Compression Ratio: 8.50 to 1
Block: 4 – Bolt, 2 Piece Rear Seal, 4.000” Bore
Crankshaft: Cast Nodular 3.480” Stroke
Heads: Cast Iron, 76cc
Valves: 1.940” / 1.500”
Camshaft lift: 0.390” / 0.410” Hydraulic
Duration @ 0.050”: 195° / 202°
Intake: Not Included

This engine can also be used in 1986 model pick-ups. The flexplate (flywheel) must also be changed. Use flexplate #471598.

Wow - you guys are good - and FAST!

From what I can tell from this post and the links provided above, I could have any range of horsepower. Since I bought the car with the engine already installed, I don't know exactly what prev. owner did to it (besides do a terrible install). It has ram-horn exhaust manifolds and a Torker II intake with an Edelbrock 650 carb. I'm thinking 220 hp, but what do I know?

Since this last description has 249hp/304ft/lb - I assume it goes along with the crate engine instead of the original truck engine. I sure hope so!

What do you guys think?

Originally Posted by HWORRELL

Heres what I found on it....Looks like its the stock truck replacement engine..

Have you heard about the GM Goodwrench Crate Engine 350? All new components assembled into a NEW 4 – bolt main block. Not Remanufactured / Not Rebuilt! An all-new 350 Chevy engine backed by the best warranty in the USA!

Engine Name: 350 LM1
Horsepower: 249 HP @ 5,000 RPM
Torque: 304 Ft/Lbs @ 3,500 RPM
Compression Ratio: 8.50 to 1
Block: 4 – Bolt, 2 Piece Rear Seal, 4.000” Bore
Crankshaft: Cast Nodular 3.480” Stroke
Heads: Cast Iron, 76cc
Valves: 1.940” / 1.500”
Camshaft lift: 0.390” / 0.410” Hydraulic
Duration @ 0.050”: 195° / 202°
Intake: Not Included

This engine can also be used in 1986 model pick-ups. The flexplate (flywheel) must also be changed. Use flexplate #471598.

Thanks! Where did you find that info?

I don't remember the link,but all I did was google " LM1 crate engine specs"
and came up with a buncha sites...

Google is a wunneful thing.

Hmmm - I wonder what Vortek heads will give me? Probably the same as my other crate 350 - perhaps 330hp/385tq?