bodydrop and ls1 swap for a obs.

[1low94]

Hey guys and gals! This is my first time joining a forum and so far this place has been a very helpful. As of yesterday I picked up a 98 c1500 rolling chassis to start my custom firewall back stock floor body drop and since I am going this far it makes perfect sense to ditch the stock 4.3l in place for some new age fuel injected power. I have narrowed it down to one of these motors to swap into my 94 c1500, the lq9, ls1, or lsx engine, the problem that I worry about is I want to make sure the motor will clear the hood with a 3" stock floor body drop, I did some searching but haven't found much on anyone that has done a bodydrop along with an ls motor swap. I assume the ls1 would be my best bet seeing they are in a vette or camaro, vs the lsx 5.3l and lq9 are both truck motors. If anyone out there has done this kind of swap in an OBS any info would be greatly appreciated! Also I will be posting pics and info on the entire project this winter. Thanks!

[RS/SS 4.8]

As long as u use a car intake ie. LS1,2,3,6 u should be fine. Ive seen plenty of body dropped chevys, but mostly 99 and up with no problems.

[1low94]

Ok cool, so will the ls1,2,3,6 intake manifold fit on a lq9 or the L33 5.3 engine? Since I have not made my final decision as to which motor I end up purchasing. Also if anyone can help me out as to go with a cable throttle body or the fly by wire? How difficult would it be if I did go with the fly by wire to do the swap? What are the advantages to using the wire over the cable throttle body?

[bangbangskeetskeet]

Dependant on the year of the motor you get it could be as easy as just swapping in a DBW pedal.

[RS/SS 4.8]

My bad the LS3 will only fit the l92 heads cuz they use different ports. U can put l92 heads on a lq4/9.

[DBRODS]

any of the car intakes..ls1, ls6, ls2, ls3, l76 and ls7 will clear.

[Botlfed]

Ok cool, so will the ls1,2,3,6 intake manifold fit on a lq9 or the L33 5.3 engine? Since I have not made my final decision as to which motor I end up purchasing. Also if anyone can help me out as to go with a cable throttle body or the fly by wire? How difficult would it be if I did go with the fly by wire to do the swap? What are the advantages to using the wire over the cable throttle body?

some say a cable driven TB has better throttle response, ive driven both and i think theyre full of it so either or would be fine, id stick with a DBC prolly be easier in your case.

[1low94]

My question today is if I buy a ls1, lm7 will the 4l60e work out of my 94? It has the 4.3 in it now. It still super smooth shifting and if it would work I would rather use it till I wreck it than buy a second tranny. Any help would be awesome.

[1low94]

IMAG0795.jpgWell I made my purchase lastnight, its an lq9 out of an 05 silvo SS 50k miles with a Texas speed ms4 cam with matching valve trane, shoenfeld headers, 3500 stall in the 4l60, motor came with a Texas speed stand alone harness all ready to go into my 94 chev, the guy I bought it from was putting it into a 91 rcsb so it will work out awesome! Will save me a good deal of cash seeing it came with the harness and swap headers for my truck already, going to drop it off today at Northern Cylinder Head to have them give it a once over to make sure she's all good to go, then from there off to paint. I will prob need to swap out the alt bracket to move it down to fit it under the stock hood on a bodydropped 94 and swap out the truck intake manifold for the ls1 style but no big deal. I'm super pumped to get this rockin!

[classic1]

Attachment 6341Well I made my purchase lastnight, its an lq9 out of an 05 silvo SS 50k miles with a Texas speed ms4 cam with matching valve trane, shoenfeld headers, 3500 stall in the 4l60, motor came with a Texas speed stand alone harness all ready to go into my 94 chev, the guy I bought it from was putting it into a 91 rcsb so it will work out awesome! Will save me a good deal of cash seeing it came with the harness and swap headers for my truck already, going to drop it off today at Northern Cylinder Head to have them give it a once over to make sure she's all good to go, then from there off to paint. I will prob need to swap out the alt bracket to move it down to fit it under the stock hood on a bodydropped 94 and swap out the truck intake manifold for the ls1 style but no big deal. I'm super pumped to get this rockin!

What a score. I'm not sure if that cam will work very well in a heavy truck. That cam needs atleast a 4000 stall in a light F Body to retain any type of low end torque. I would swap it out for a TSP 228R or maybe a Torquer V3 since you already have a nice stable valvetrain. Someone will chime in with a better answer than that. Other than that I think it will definetely be a fun truck to drive. Any type of porting done to the heads?