SuperChevy LT5 write up

[DEEZUZ]

This is one of my all time favorite engines purely based on what it was when it was. GM, lotus, Mercury marine abortion.... Amazing


http://www.superchevy.com/how-to/engines-drivetrain/1806-the-original-lt5-and-what-could-have-been/


On the dyno, the one-of-none Gen III LT5 recorded 528 horsepower and 431 lb-ft. of torque, using a test procedure that mimicked the procedure—without accessories—the development team followed during the Gen I/II tests, which added about 10 percent to production-spec engines. Subtract that 10 percent from 528 horsepower and it lands right on the original, 25-year-old 475hp target.

Click to read more...

 

[Bru]

Wish this engine were swapped more. Would love to see it in a B-Body. Tim Allen had one in a 1996 Impala SS, but a 1990 Caprice would be sweet. The ZR1’s at the half mile we’re always pulling crazy N/A traps compared with FI cars. Awesome engine.

 

[Stink Star]

I’ve had a dream for a long time building a old rat rod looking car with an LT5

 

[Bru]

Hell yeah

 

[guspech750]

Still my favorite engine. It just looks super sexy.

 

[CMNTMXR57]

I'm hard.

I remember back in the day, a ZR1 coming in and needing a new replacement engine (under warranty obviously). The hoops and red tape that we had to go through then when the engine came from GM, it came with a brinks truck, security detail and the tech that did the R&R had to have a background check, etc...

Ok, I kid, but seriously. These things were like some rare metal or something.

 

[Great White Drake]

I’m confused. So this isn’t an LS? I thought we were brothers.

 

[CMNTMXR57]

No, From 1989 - 1994 (IIRC), the ZR1 used an engine designed with help from Lotus and assembled by Mercury Marine (because at that time, GM did not have much experience with all aluminum engines, so they went to someone who did).

It was a 4 cam, 32 valve V8;

Much of what GM learned from them (regarding all aluminum construction) is what eventually went into the GenIII engines.

 

[Great White Drake]

Lol I was just messing with Alex. Cool engines that made insane power for the time.

 

[DEEZUZ]

The zr1s also had to be widened a few inches I thought....

 

[IceCreamAssassin]

The engineering for that motor and car was amazing. Definitely a favorite

 

[DEEZUZ]

The engineering for that motor and car was amazing. Definitely a favorite

I own 3 of them....... in 1:18..... :hugh:

 

[CMNTMXR57]

Yes, the rear tires needed to be bigger, so the rear quarters were also "fluffed" to accomodate.

 

[martyb]

I had a warmed over 91 ZR1, made just under 400 to the tires but pulled like crazy up to 7300 or so. Amazing engine, wish I still had the car.

 

[Ti28]

What could have should have.....

 

[Thirdgen89GTA]

I had a warmed over 91 ZR1, made just under 400 to the tires but pulled like crazy up to 7300 or so. Amazing engine, wish I still had the car.

4 valve heads are a huge boon to flow and velocity.

 

[Smokinhot]

And what happened at the end. Old man was on a roll against me, and trapped 143mph N/A with just ported runners. Not bad for an early 90s car..

Thankfully he put it back together.

https://youtu.be/o0k16xPD76M

 

[SHARKBITEATTACK]

Someone put one in a 3rd gen.

Definitely an engineering masterpiece. I love what john lingenfelter did with them in the 90’s too. 441 stroker kits and 700hp NA.

I’d love to own a C4 ZR1 but I’d prolly replace it with an LS7

 

[03GTGreen]

wow doing a quick search, those year Zr1s are still going for mid 20s lol

 

[DEEZUZ]

Engines worth more than the chassis's

 

[IceCreamAssassin]

Would pay mid 20’s for that car in great shape. Would love to find a high mileage one to daily for shits and grins

 

[Thirdgen89GTA]

Engines worth more than the chassis's

I remember a while ago you could still buy them brand new on crates......


....for $32k each

 

[Thirdgen89GTA]

Or you could buy this spiritual successor to the original LT5.

7.0L DOHC 750hp @ 8000rpm. For the measly price of $32k.

Mercury Racing SB4 DOHC - Roadster Shop Roadster Shop

 

[SHARKBITEATTACK]

wow doing a quick search, those year Zr1s are still going for mid 20s lol

deff didnt hold their value like other low volume exotics. :rollpicard:

Or you could buy this spiritual successor to the original LT5.

7.0L DOHC 750hp @ 8000rpm. For the measly price of $32k.

Mercury Racing SB4 DOHC - Roadster Shop Roadster Shop

and the cool thing is I've heard that that engine will fit in the engine bay of a C4 AND bolt up to the trans!

 

[CMNTMXR57]

Only $33k before options.