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post #1 of 4 Old 09-08-2011, 03:58 PM Thread Starter
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couple swap questions

I finally pulled the trigger and bought a motor for my 94 gt. its a 98 ls1 with a t-rex cam and ported 853 heads. got a long block and goin with vic jr with msd box for coil packs. so my questions are 1.) how to get a th400 on ls1 with ls1 style converter ( what parts) 2.) what wire harness for coil packs do i need to run msd and what sensors. 3.) i already have a 255 in tank pump can i run that with AN fittings of the stock sending unit to regulator and turn fuel pressure down and run a return, and who sells fittings. 4.) throttle cable. 5.) brakes- can i run factory booster and leave it be or run manual? i know ill have more questions down the road thanks in advance! build thred commin soon


94 mustang gt- stock 302, vortech v2 s-trim, too slow
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post #2 of 4 Old 09-09-2011, 02:06 PM
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Originally Posted by joedgvnn94gt View Post
so my questions are 1.) how to get a th400 on ls1 with ls1 style converter ( what parts)
The TH400 will bolt right up to the ls block, you will not use all the bolt holes though. I believe you use like 4-6 bolts. As for converter, you can call PTC tell them what your doing and they will do the rest so it's a bolt in type deal. (I installed TH350 in my 99 TA)

2.) what wire harness for coil packs do i need to run msd and what sensors.
You need to find a 99-02 wiring harness and PCM.

3.) i already have a 255 in tank pump can i run that with AN fittings of the stock sending unit to regulator and turn fuel pressure down and run a return, and who sells fittings.
Use a 99-04 corvette fuel filter. It is a regulator/filter in one. It's the simplest way to get it done. It will have the pressure perfect for the lsx. There will be 1 supply line going to the rail. The return is at the filter/reg.

4.) throttle cable.
I've seen people use a stock 5.0 throttle cable fab'd to work with ls1 throttle body. I'm sure the SN95 would work the same way.

5.) brakes- can i run factory booster and leave it be or run manual? i know ill have more questions down the road thanks in advance! build thred commin soon.
Either one you prefer. Of course you will lose some weight going manual. But more cost getting the conversion kit.
Let me know if you have anymore questions.

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post #3 of 4 Old 09-11-2011, 10:42 AM
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1.) how to get a th400 on ls1 with ls1 style converter ( what parts)
1) the Th400 bolts right up but 1 hold wont line up, just leave it out. You can use a Th400 TC with adaptor but if having one built they can built it for the LSx. PM me for the adaptor, we have done several of these swaps so I had them made and have a couple here.
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post #4 of 4 Old 09-12-2011, 09:15 AM
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If your buying the MSD to run coil packs, I am assuming this will be carbed? If so MSD includes the plugs/wires you need as for wiring. There is no need for a harness.



Quote:
Originally Posted by joedgvnn94gt View Post
I finally pulled the trigger and bought a motor for my 94 gt. its a 98 ls1 with a t-rex cam and ported 853 heads. got a long block and goin with vic jr with msd box for coil packs. so my questions are 1.) how to get a th400 on ls1 with ls1 style converter ( what parts) 2.) what wire harness for coil packs do i need to run msd and what sensors. 3.) i already have a 255 in tank pump can i run that with AN fittings of the stock sending unit to regulator and turn fuel pressure down and run a return, and who sells fittings. 4.) throttle cable. 5.) brakes- can i run factory booster and leave it be or run manual? i know ill have more questions down the road thanks in advance! build thred commin soon

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