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

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Old Oct 18, 2004 | 05:38 PM
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Just wondering if anybody did a LS6 or LS1 swap in the C4s?
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Old Oct 18, 2004 | 05:39 PM
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I'm sure someone has, but I know the general conception is for the amount of money it costs to do the swap, its more cost-effective to mod the motor you have or buy something with more power in the first place, that is a direct replacement.

-Joe
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Old Oct 18, 2004 | 05:52 PM
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i know of c3 guys doing it
but as far as c4s
if u want more power stroker! and stg 2 or 3 heads!!!!
along with oter basic mods you can get 400-600 hp!!!
ls6 is just a more expensive ls1 and doesnt respond as well to mods!!!!!
itll be another 15k once you find a nice ls6 with low miles and have it installed or hook it up. along with numerous obsticales!
i mean is it work the 40 hp over a lt1
i mean an lt4 is faster than an ls1
i dont know what kind you have l98 or lt1 or lt4
but if you stroke it and get stg 3 heads or even stg 2
no c5 will keep up with u!!!
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Old Oct 18, 2004 | 05:56 PM
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Originally Posted by redbullapril23
i know of c3 guys doing it
but as far as c4s
if u want more power stroker! and stg 2 or 3 heads!!!!
along with oter basic mods you can get 400-600 hp!!!
ls6 is just a more expensive ls1 and doesnt respond as well to mods!!!!!
itll be another 15k once you find a nice ls6 with low miles and have it installed or hook it up. along with numerous obsticales!
i mean is it work the 40 hp over a lt1
i mean an lt4 is faster than an ls1
i dont know what kind you have l98 or lt1 or lt4
but if you stroke it and get stg 3 heads or even stg 2
no c5 will keep up with u!!!
I'm sorry, but the LSx motors respond *ridiculously* to heads/cam work.
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Old Oct 18, 2004 | 06:07 PM
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Originally Posted by Perfusion
I'm sorry, but the LSx motors respond *ridiculously* to heads/cam work.
Yep, the LSx engines breathe SO much better than an LTx engine it really isn't even funny. A heads/cam LSx engine can pretty easily attain 430-440 RWHP, whereas a heads/cam LTx engine is doing good if it gets 380 RWHP. Swapping an LSx engine into a C4 can be done, and has been done...but it'll take some time and of course some cash. When I get the time, it's an idea that I plan on seriously looking into!
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Old Oct 18, 2004 | 06:17 PM
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[QUOTE=redbullapril23ls6 is just a more expensive ls1 and doesnt respond as well to mods!!!!!
QUOTE]


Do you mean the LS motors dont respond well to Mods? Because I would realy have to dis agree with that one, there are bolt on only F-bodys in my club running 11.8s with no internal motor work not even rocker arms just exhaust, intake and a converter and if you get a head and cam package for the LS motors forget about it. I am building a prety stout stroker LT1/4 (AFR 195 LT4 Heads and LT4 intake) and am well aware that a LS1 with a good cam and a decent set of heads would roll with me no problems.
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Old Oct 18, 2004 | 06:24 PM
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the only real downside is transmission options... currently, there are no kits to fit the ZF6 to the LSx motor family.
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Old Oct 18, 2004 | 07:01 PM
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wow we sure got back to this one in a hurry
http://forums.corvetteforum.com/showthread.php?t=927403

somone has done it show us the way
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Old Oct 18, 2004 | 07:15 PM
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I'm really new to this,I have a 91'C4 six speed I dont know if it is a LT1 or a LT4
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Old Oct 18, 2004 | 07:17 PM
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Originally Posted by da808n
I'm really new to this,I have a 91'C4 six speed I dont know if it is a LT1 or a LT4

LT-1 is what you have. The LT-4 was only offered in 1996 and was mated with the 6-speed only.
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Old Oct 18, 2004 | 07:19 PM
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oh man thanks bro!you guys are alot of help maybe I should just rebuild my LT1

Last edited by da808n; Oct 18, 2004 at 07:24 PM.
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Old Oct 18, 2004 | 07:21 PM
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Originally Posted by LT-4 CE
LT-1 is what you have. The LT-4 was only offered in 1996 and was mated with the 6-speed only.
He has the L98, 1991 was the last yearfor it, 1992 was the first year for the LT1.
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Old Oct 18, 2004 | 07:25 PM
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Originally Posted by BlackRoseLT1
He has the L98, 1991 was the last yearfor it, 1992 was the first year for the LT1.
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Old Oct 18, 2004 | 07:27 PM
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L98?
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Old Oct 18, 2004 | 07:39 PM
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yea L98
look under the hood, if you have a 'proper' distributor on top of the eng at the rear it's a l98 if the sparkplug wires seem to disappear infront of the eng then It's a lt
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Old Oct 18, 2004 | 07:55 PM
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Well if the ZF trans are the problem then an auto LS engine swap should work well. Another plus for the auto trans!
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Old Oct 18, 2004 | 09:45 PM
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Originally Posted by da808n
L98?
If it's a 91, it's an L98. Bags and bags of torque, but lower than the LT1 in high-end HP. The L98 looks like it has a big spider sitting on top of the engine (i.e., 8 "legs"). The LT1....doesn't!

This is an LT4 - an LT1 will essentially *look* the same, minus the red intake manifold and Grand Sport TB Plate...
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Old Oct 18, 2004 | 10:14 PM
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L98



Look familiar eh?
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Old Oct 19, 2004 | 06:51 AM
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Originally Posted by BlackRoseLT1
He has the L98, 1991 was the last yearfor it, 1992 was the first year for the LT1.

Well now, that's embarassing. I just looked to see if it was a 96 and stopped thinking. That seemed to happen a lot yesteday.
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Old Oct 19, 2004 | 10:11 AM
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Originally Posted by Perfusion
If it's a 91, it's an L98. Bags and bags of torque, but lower than the LT1 in high-end HP. The L98 looks like it has a big spider sitting on top of the engine (i.e., 8 "legs"). The LT1....doesn't!

This is an LT4 - an LT1 will essentially *look* the same, minus the red intake manifold and Grand Sport TB Plate...
OK I see what you mean,now is there any performance stuff for this L98? I just want to keep up with my nephew,he has a SS CAMARO 92'W/supercharge(Procharger).
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