C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

LS-x in a c4?

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Old Oct 17, 2004 | 01:11 AM
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Default LS-x in a c4?

I'm sure that this subject has been beat to death here on the forum, but I can't find anything on this with the search function,and this is not My normal lurking section, so let me ask again.
Has anyone swaped in a LS1/2/5/6 eng into a c4 and if so what problems am I going to need to overcome.
my car is a '91 L98 ZF6 D44 that is low miles, well loved, and will be with me for life.
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Old Oct 17, 2004 | 01:23 AM
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From: levittown pa. usa Even a bad day with my `Vette, is better than a good day at work
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All things are possible with enough money
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Old Oct 17, 2004 | 01:25 AM
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yea, tell me about it
I just want to not get blown away by the c5/c6 guys

Last edited by L98 DRIVER; Oct 17, 2004 at 01:28 AM.
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Old Oct 17, 2004 | 01:31 AM
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Originally Posted by L98 DRIVER
I'm sure that this subject has been beat to death here on the forum, but I can't find anything on this with the search function,and this is not My normal lurking section, so let me ask again.
Has anyone swaped in a LS1/2/5/6 eng into a c4 and if so what problems am I going to need to overcome.
my car is a '91 L98 ZF6 D44 that is low miles, well loved, and will be with me for life.
You don't need a LS motor in your C4 to beat C5/6.
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Old Oct 17, 2004 | 01:40 AM
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what do you suggest?
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Old Oct 17, 2004 | 01:53 AM
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Originally Posted by zelement
You don't need a LS motor in your C4 to beat C5/6.

Well if it was a road coarse, maybe... but the extra ponies on a sweet LS is a nice upgrade from a L98.

MHO
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Old Oct 17, 2004 | 01:53 AM
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Originally Posted by zelement
You don't need a LS motor in your C4 to beat C5/6.

Well if it was a road coarse, maybe... but the extra ponies on a sweet LS is a nice upgrade from a L98.

Stock to stock I mean...

MHO
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Old Oct 17, 2004 | 01:59 AM
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Yes it is a hpde/soloII car, but sometimes at a stoplight...
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Old Oct 17, 2004 | 02:15 AM
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The LSx motors cannot be fitted to a ZF6, as of this time.

gee... you want 400+ hp, it ain't hard... Super Ram, cam, heads, 1.6:1 (or 1.7:1) roller rockers, long tube headers, stroke it to a 383. Yea, baby, you will be tuned right in.

A motor like that will cost about $6000.00. Plus or minus a few hundred. Much cheaper than any LS1 fitment. Those installs ain't cheap - They start at $10k. And if you use an LS1, it's only got 350 hp. Not a good move, in my opinion.

Oh, and whatever you do will move you to mod, not stock.

I would also consider coil overs, if the rules permit, but that's just me.
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Old Oct 17, 2004 | 03:42 AM
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Originally Posted by L98 DRIVER
what do you suggest?
What do you want the car to do?
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Old Oct 17, 2004 | 10:04 PM
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Originally Posted by zelement
What do you want the car to do?
ME need more power
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Old Oct 17, 2004 | 10:08 PM
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Originally Posted by L98 DRIVER
what do you suggest?

Here is what I came up with
383
Scat 3.75 forged crank, Scat 6.0 H-beam rods, SRP pistons, CC 306 cam, AFR 195 More performance ported heads and some Comp pro mag 7/16 1.6 R/Rs for good measure.

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Old Oct 17, 2004 | 10:18 PM
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Originally Posted by bogus
The LSx motors cannot be fitted to a ZF6, as of this time.

why not ? is it a bellhousing issue or flywheel

gee... you want 400+ hp, it ain't hard... Super Ram, cam, heads, 1.6:1 (or 1.7:1) roller rockers, long tube headers, stroke it to a 383. Yea, baby, you will be tuned right in.

I dont want to finish with 400+ hp I want to start there

A motor like that will cost about $6000.00. Plus or minus a few hundred. Much cheaper than any LS1 fitment. Those installs ain't cheap - They start at $10k. And if you use an LS1, it's only got 350 hp. Not a good move, in my opinion.

why so much? I'm thinking boneyard motor with electronics for about $4,000

Oh, and whatever you do will move you to mod, not stock.

no kidding? a 600hp c4 in A stock, who could possibly have a problem with that?

I would also consider coil overs, if the rules permit, but that's just me.

hp first susp second
thanks for the input guys
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Old Oct 17, 2004 | 10:26 PM
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fd2blk that is one sweet motor. I have a much milder 388 in my truck
about 6mpg on the highway but it pulls like a tractor in the mud
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Old Oct 17, 2004 | 10:27 PM
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My 93 has a 388 ci solid roller Lt4 headed motor. with 494 rwhp and a 7700 rpm redline ive already put a supercharged z06 AND a 422 ci LS6 to shame. both from a roll. remember motors are just air pumps. when modified, theyre really all the same thing ( basically im saying it all depends how much $$ you want to spend and what you want, anything is possible whether it be a ls1/or an lt1 ).
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Old Oct 18, 2004 | 09:54 AM
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I don't know if 4.10 gears would help or hurt in auto-x, 2nd may live at the rev limiter on a long course...

I think those engine mods would put you in SM2 (same for coil-overs), you could do a stock swap with a LT-4 and possibly stay in BSP...
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Old Oct 18, 2004 | 03:04 PM
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I think most people disagree with the ls1 choice because they dont know much about it.

A friend of mine who isnt to welcome on this board anymore has on in his C4. He did the entire swap with shelf non-custom parts and everything bolts right in, no modifying really.

A 98-02 Camaro/Firebird LS1 /w 4L60E, (available starting around $2500), painless wiring harness, motor mount adapters $80, and some mac f-body headers and bolt the thing in yourcar...

or just bolt up a th350/400 to it.... you can use a T56 as well, but that would take more work to put in.
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Old Oct 18, 2004 | 04:17 PM
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I am not challenging the ease of the engine, it's just that the transmission options are very limited, and the prices very high.
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