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

Crossfire to LT1???????????????????????

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Old Jun 21, 2003 | 02:43 AM
  #1  
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Default Crossfire to LT1???????????????????????

I have talked to a few people from the forum about me possibly purchasing there engines that they have for sale. I am interested in one persons 94 corvette LT1. It has about 100K for 1200 which is a great price. What would I need for it to work? I want my car to run like it was built with it already in it. Also how much diffrent will my car feel with that in it, what will the HP and torque be and a guess at what my 1/4 time would be? thanks
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Old Jun 21, 2003 | 08:29 AM
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Default Re: Crossfire to LT1??????????????????????? (vettespd20)

I'm looking at the big picture and others will chime in......

The Block (assuming direct bolt up)
ECM and engine harnesses
CCM (ECM communicates with it)
VATS bypass

Those the the four big things that come to mind

Kitt

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Old Jun 21, 2003 | 11:58 PM
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Default Re: Crossfire to LT1???????????????????????

I am not sure what i am going to do yet I have talked to a lot of people about what i should i do with my engine. I want to get a new engine but i dont know what i will put in it. any suggestions let me know. I want 350HP let me know thanks
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Old Jun 22, 2003 | 12:10 AM
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Default Re: Crossfire to LT1??????????????????????? (vettespd20)

I'm from Cinci as well, though I live in IN now...

I just finished the TPI conversion (from a crossfire), and although the parts are easy enough to swap (LT1swap.com?), the real issue is your chip, harness, and getting all the incidentals to fit (fuel, coolant, throttle linkages).

Although the intake is nicer, more powerful and easier to install than the TPI (in retrospect I should have more seriously considered the LT1 swap); you're still going to have those same issues. Just do a LOT of reading and piece everything together before you actually start turning wrenches.... I swear, I wound up going to the parts store literally every day for two weeks. :lol:


[Modified by Ramanstud, 12:11 AM 6/22/2003]
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Old Jun 22, 2003 | 12:15 PM
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Default Re: Crossfire to LT1??????????????????????? (vettespd20)

I am finishing this swap rite now and it is not cheap. I have got some great deals along the way but I would say you rae looking at about $4000 min and thats if you do all the work.

]$1200 for the LT1 $1000 TO REBUILD the LT1 =$2200 and belive me I am beeing conservative. ( this is you doing the rebuild with parts and machine work)
$100 for the ECM another $100-300 for programing emisions delete vats bypass ect... lets call it $200 total
next you need a 4 wire harness another words a harness ready for use in your car Cheapest one I found $400
so the total so far is $2800
Now you need a LT1 assy bracket and all assys unless the LT1 comes with it.
there is a complete set up on e-bay for less than $300 and that is a great deal if you are serious about theis swap you need to buy this set up today at http://cgi.ebay.com/ebaymotors/ws/eB...tem=2419945717
You can use none of your stock assy's.
If you do not buy the set up off e-bay or find one for the same deal then you spend what I did
assy bracket $50
A/C compressor used $100 Rebuilt $500 New $700 I got a good used one
LT1 altenator remaned $170 new ???
LT1 PS pump I think its $200 cant remember
LT1 tensioner and idler pulley ( Im looking for them now ) $80
lets just call it $800
Add the $2800 + 800 = $3600
Now what else.
The sensors you will need all the sensors MAF, IAT, TPS, Knock, Water Temp, Oil Pres, Oil Temp, and a few Im missing.
These plus an air box and boots over $400

Good luck. been there done that. great swap not cheap almost forgot new fuel lines and fuel pump. If you do this swap plan it out verry well. The list I gave you is a hell of a lot more than I started with.





[Modified by ejfagala, 11:19 AM 6/22/2003]
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Old Jun 22, 2003 | 12:29 PM
  #6  
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Default Re: Crossfire to LT1??????????????????????? (ejfagala)

I forgot that the LT1's are a totally different ballgame- thanks for chiming in!

Now I don't feel so bad for sticking with the TPI. :D Parts are a hell of a lot less expensive (well... depending on where you get them).


:jester
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Old Jun 23, 2003 | 10:46 AM
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Default Re: Crossfire to LT1??????????????????????? (vettespd20)

I wouldnt go that far yet. Maybe if you could find one for a good price.

There are some VERY kool things going on with CFI right now that doesnt even exist with TPI. If you like working on your car, you will like the CFI. Dont get swayed by rumors and other BS.
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