Recently picked up a 94 ZR1 Corvette for resale (listed on eBay, item 200220967326), took it out for a spin a couple of days ago - WOW I LOVE THE LT5 Engine...

Just made me curious, has anyone ever swapped one into a Fiero? I know it'd be an expensive engine (used they are $5-10k), and cheaper engines can have more horsepower quite easily, but there is something about the LT5 and it's high-revs that make it feel magical! Not to mention it's the prettiest engine ever made by GM...

Here's a shot of the engine in my car...

I believe the LT5 with it's massive DOHC heads is too wide to fit in a Fiero. Nice car though. I recently was driving next to a ZR-1 and they sure do sound sweet.

I saw a user here with the name LT5Fiero but I dont know if thats what he wants or what he has. Also stretch it and mount it Longitudinally witht he Porsche tranny. Expensive but Id drool over it. Ilove the LT5 and the 94 is the better version (post 92)

V8Archie has one sitting in his shop. I'm sure anything is possible, so if a customer came in and requested an LT5 he would install it.

Edit to add that if a Northstar will physically fit than this engine can't be that much bigger.

[This message has been edited by jscott1 (edited 05-03-2008).]

HI all

I once asked Archie if it would fit, and he said yes........

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Me, I sell engines, the cars are for free, I need something to crate the engines in....
Enzo Ferrari....

Today they are called garage's, yesterday, they were stable's! Eric Jacobsen....

quote Originally posted by jscott1: V8Archie has one sitting in his shop. I'm sure anything is possible, so if a customer came in and requested an LT5 he would install it.

You know what makes the LT5 so nice looking is unlike most GM engines that are a mess of wires and plumbing hidden under a plastic cover the LT5 is just a work of art.

I didnt get to see archies LT5 I want it. Archie can I just be your slave for a cpl of years in exchange? I can clean real well.

great engine ..8000 rpm rev ...only downfall it really weighs alot ..like about 600 lbs according to the list of engine weights on the net

quote Originally posted by jscott1: You know what makes the LT5 so nice looking is unlike most GM engines that are a mess of wires and plumbing hidden under a plastic cover the LT5 is just a work of art.

Because GM didn't built the engine Mercury Marine did. I still think it looks more like a 32valve TPI than a LT1. The torque curve on this engine I think would be worlds different its it had a similar desgin intake on a pushrod 2v v8

quote Originally posted by linuxpowered88: Because GM didn't built the engine Mercury Marine did.

Sad but true. I was going to say based on a GM design, but actually Lotus designed the heads.

quote Originally posted by linuxpowered88: The torque curve on this engine I think would be worlds different its it had a similar desgin intake on a pushrod 2v v8

In college my best friend had a 90 ZR-1 and I had an 86 Vette with the 4+3 manual (both were black). My Vette was so much more fun in town due to excess torque down low with wheel spin available at the blip of the loud pedal in 1st and 2nd (and this was with the 3.07 rear end), The ZR-1 really came alive over 3K when the 2nd intake track opened up, but down low in town it would not break the tires loose without significant abuse (3.45 rear end). The ZR-1 was still a very strong engine and you could feel the tires squirm to keep traction once you were above 3K.

For the same price, you could have a northstar that makes more power, with a higher redline, not have to use an adapter plate, AND have money for gas. You're on your own to design a sexier intake though.

The block was redesgined too jscott not much of anything was GM on that engine.

quote Originally posted by ryan.hess: For the same price, you could have a northstar that makes more power, with a higher redline, not have to use an adapter plate, AND have money for gas. You're on your own to design a sexier intake though.

Been there done that...the Northstar is a puppy compared to this engine though...they're not in the same league... The Northstar (had one in an 86GT) has enough power to make things interesting - but not enough to make it scary

quote Originally posted by pacethis: Been there done that...the Northstar is a puppy compared to this engine though...they're not in the same league... The Northstar (had one in an 86GT) has enough power to make things interesting - but not enough to make it scary

Who said anything about it being stock?

Cams can take you to 400hp, which is more than some years' LT5.

I don't think LT5Fiero does infact have an LT5 in his fiero. Way back in 2002, I remember he was talking about it and trying to measure things up but I don't think it actually went anywhere, atleast not that he posted about.

The only pic I can find is his sig and I'm pretty sure its photoshopped.

OK Archie, if you're reading this...How much for the LT5 6sp swap? LOL!
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~Michael

Project IMSA Formula Coming Soon!
'85 GT 4sp white - SOLD | | '85 2M6 Auto red - SOLD | | '84 2M4 bare chassis - SOLD
Crap, I'm out of Fieros! Time to buy another!! - "Your mileage may vary."

[This message has been edited by TRiAD (edited 05-06-2008).]

As Expensive as LT5's run Triad prob a soul plus a first born.

Back when looking at vette's I was seeing a few ZR1's for about $20k. I was talking to my vette buddies and they all came back with a resounding DON'T DO IT. It seems there aren't a whole lot of people that can actually (knowledgeably) work on them.

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-Chris
'85 V6 SE 4sp (SOLD)
'88 GT Auto (fun car)
'03 Sentra SE-R Spec V (Daily driver)

quote Originally posted by Chris_narf: Back when looking at vette's I was seeing a few ZR1's for about $20k. I was talking to my vette buddies and they all came back with a resounding DON'T DO IT. It seems there aren't a whole lot of people that can actually (knowledgeably) work on them.

Same deal with Fieros. What's the difference?

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1986 SE 350 V8