TAtoad

iTrader: (22)

a buddy of mine has a 97 Z28 30th annv model, not SS, with an LT4. it has the plaque on the dash above the radio. it says LT4 Z28 385 hp. white interior with 30th badging. i used to think they were all SS's. Sad thing is he has a cam in it, doesnt know what it is, had it when he got it. sound f-in mean, WITH No Name 245s(sad part), can catch worth a damn.

Irunelevens

There never was a "385hp" LT4, so I'm not sure that plaque was there to begin with... All LT4s that went into Camaros, went into SS Camaros, and they were 330hp, just like in the Corvette. 100 LT4s were put into Camaros for the US in '97, and 29 I believe for the LT4 Firehawks, which were also 330hp.

V-seriesTech

iTrader: (5)

Was gonna respond yeterday but, forgot. Anyways, we've been whooping *** in LT4's since they first came out in 96 man. At the time, with MILD mods to my cousins GREEN LT4, it was really hard to beat. My bottom 13 second mustang(i was 16/17) had nothing for him. Local vipers had nothing for him, and when LS1's came out,...they had nothing for them either. The LT4 was a well thought out package that GM should have produced years before but, forwhatever reason, they didn't.

I grew up around big block cars, classic GM's, classic mopars, but mostly mid to late 60's vettes. I never had respect for ANY modern Corvette, until I drove the LT4 cars. It completely changed my thinking, and realized, that there was a whole other world out there when it came to what FAST actually was(remember, I was 16ish). It was pretty cool. Sorry to say that, at the time, when my cousin was ready to buy his 02 Z06, that he couldn't keep the LT4. Now, years later, he's trying to buy the car back. They do, still have a collectors edition LT4, all stock.

For anyone that wants a cool, VERY aerodynamic, and very stable car that, can be in supercar territory, pick yourself up a 95 LT-1, or 96 LT4 and do some well thought out mods, depending on budget. If your gonna stay LT1/4.....heads, cam, spray.... or rip it all out, and go LSx.

Great cars, very underated. The 97 LS1's were rated at what, 345? The YEAR BEFORE 96 Lt1's were rated at 330 but, where making closer to 360. Why? Cause they didn't want the "old" corvette to outpower the "latest and greatest" LS1, and possibly hurt sales. In my opinion anyways.

Anyways, yeah, they can run good. I'll own one, one day.

burnzilla

iTrader: (3)

Great post.
I had a link on how the LT1 was underrated, just like the LS1, and how it was so choked out in stock form. Intake, exhaust manifold and exhaust robbed alot of HP, and even many people on here will tell you they have noticed a big difference just by making thier car a full bolt on car. (intake, full exhaust)
A couple years back when I put on just Moroso CAI, TF Elbow and SLP Loudmouth I easily noticed a difference with my "***-o-meter" and can't wait to stall my A4.
There is a guy on here, with a 96 A4 Z28 running a 13.3 with just a K&N and Borla... and since my car runs so strong a mid 13 pass wouldn't have surprised me then because I managed a 13.89 @ 99mph when the car was BONE stock, besides being well taken care of, new tires and Mobil 1 oil.

Now that I am full bolt on, after my new ported TB, Yank stall and tune when I get my Z28 out this spring from its winter hibernation, im hoping for 12's if I can manage a decent 60 foot. I havent drove my Z since October

NHRAMAN

iTrader: (1)

Some Vettes had them...I met a guy at a show with one, and at another show put on by a local Chevrolet Dealer, they displayed one in the showroom that was owned by the owner of the Dealership.

93transam

iTrader: (1)

The Zr1 had a valet mode which stopped the engine from reaching the higher powerbands. Ultimate History of the Corvette. Got it at half price books.

Chaotic Firebird

The ZR1 went to 405hp in the later years. The biggest debate on the Vette forum is which is better, the LT5 or LS6.

93transam

iTrader: (1)

I prefer the LT5 because of the way it looks in the engine bay, but I've heard they are unreliable.

s346k

iTrader: (4)

to the author of this thread:

you'd really hate an lt5 if you ran into one of them..

i just think it's a shame that chevrolet couldn't do more with the lt4's 10.8:1 compression. i know the inferior heads are to blame, but it seems with minor tweaking you can get some numbers out of those lt motors. if it weren't for the weak bottom ends limiting the lt1s...they'd be a cheap alternative to produce similar numbers to an ls1 - and last longer doing so.

burnzilla

iTrader: (3)

I was unaware the bottem end's of LT1's are weak, compared to the aluminum block of the LS1.
Can anyone shed more light on this?
From what I have learned, the LTx block is as good, if not better then the LSx blocks when it comes to holding boost...?

93transam

iTrader: (1)

I know you can spray the hell out of them and they'll keep on tickin,but maybe boost is a little different. You'd still have to lower the compression with some different pistonsfor some major boost though.

93transam

iTrader: (1)

Wow this thread has been high jacked like no other. Me thinks a mod might put this in the LT1 section.

Good kill to op.

93transam

iTrader: (1)

Found a cool link about the ZR1 btw. Don't know how accurate it is but 175mph for 24 hours!!!

Shackleford

iTrader: (12)

It's very hard and expensive to get parts for the LT5, though.

93transam

iTrader: (1)

I wonder, would you go to GM,Lotus, or Mercury Marine?

hmmmmm

97blkz

iTrader: (1)

A stock lt4 and srock ls1 would be a good race. The lt4 has more CFM pushed thru the heads and bit bigger of a cam. Kind of like the ls1, lol!

s346k

iTrader: (4)

the bottom end being the rotating assembly, not the block. the blocks are good, but the rods and fasteners aren't so good. you can take stock ls1 bottoms up to 7k+ repeatedly, i have yet to see anyone do this with an lt1 more than a couple times.

burnzilla

iTrader: (3)

Well, obviously...
the LT1 block is not made to rev past 6000 rpms. The crank bearings amongst other parts are not suited for this task.

Not to mention, with the reverse cooling to support the fantastic compression ratio, you would have to turn it down some, or build the motor up anyways.

BlackHoleSunSS

iTrader: (3)

I almost went to look at a ZR1 this week, but declined after my insurance agent told m he could not insure Corvettes, .

bsf

iTrader: (7)

Yeh, add an LT4 SS to my list of cars to buy when I win the lottery. Barring that, maybe that couple in Texas with the almost un-driven LT4 SS will adopt me. Then, it is just a waiting game. “Would you like some more bacon to go with your deep-fried hash browns, eggs, toast topped with real butter, whole milk, and Danish?”