Engine Swap , V6 to V8 !!

[Max-Boost]

want to do a swap on my 98 3.8 A4 , which engine should i go for ? LS1 , LT1 ??
Ls1 seems to be better some how but more complicated , LT1 is as good and has a wider performance parts range , one more thing is .. my tranny " 4L60E " .. isn't it the same as the one on the SS models ? .. if so , i won't have to changy my tranny will i ?

[Dominic]

I see this is your first post.

Please search advanced tech for this sort of thing. Lots of info there.

[Timbo1969]

Originally posted by Max-Boost:
want to do a swap on my 98 3.8 A4 , which engine should i go for ? LS1 , LT1 ??
Ls1 seems to be better some how but more complicated , LT1 is as good and has a wider performance parts range , one more thing is .. my tranny " 4L60E " .. isn't it the same as the one on the SS models ? .. if so , i won't have to changy my tranny will i ?

LS-1 and LT-1 are equally difficult. You can't use a V6 tranny as the bellhousings on the trannys are different between V6's and V8's. Use the search feature in the Advanced Tech Forum to get more information

[John_D.]

With the '98 up, the LS1 is much easier to swap. If you get the same year LS1 as your car, the wiring effort is greatly simplified.

Get the matching k-member, tranny, pcm, and wiring harness. Get a v8 gas tank, or get a '97-98 vette fuel rail and fpr to tie into your fuel lines (return-type vs. returnless).

[Gmtech1005]

I just put an lt1 engine into my v6..It is sweet.. I had a 1997 3.8L now it has a 1994 lt1 powertrain. Here is what went down.. Bought Engine, trans, all belt driven accessories, wiring harness, and pcm off e-bay for $2099 + $400 shipping. Used k-member (engine crossmember) because V8 mounts did not bolt up to v6 bolt locations...$100. Slp headers from a buddy $200.. Radiator $110 with trade in of old radiator. New throttle cable..$13. New springs, Fuel pump, Ac components, cruise control cable, and cat back exhaust will be ordered this weekend. Slice 2 wires and move the pin location of another....and vroom one bad *** bird.. I had a 3.73 limited slip differential from when I upgraded my rear end last year. I drove the v8 today for the first time...just installed the throttle cable. FAST let me tell ya. Broke em loose..caught..then damn near put her sideways during 1-2 shift.. Assloads of torque..your v6 auto trans WILL NOT bolt up to the v8. My advice, If ya have the resources to do the work, buy an engine package deal..have fun