Found a ls4 for sale minus the trans, Was wondering why i couldn't use my trans thats in my car already. It's a 4.9 caddy auto.swap that i'm not happy with.I was thinking maybe the starter location , but why not use fiero guru starter mount ? Any info would be appreciated .
You should talk to Ryan at GM Tuners. He did an LT1 swap and adapted the RWD 4L60 shift logic to make the 4T60e work.
All LS4 (05/06 24X and 07-09 58X) use the T42 transmission controller. If there was an application where the t42 controller was used on a 4L60E, then Ryan might be able to swap that program into your T42 controller and make similar adjustments as he did with the LT1 swap to get the 4T60e to work.
If you cant do it with the T42 transmission controller, and your engine is a 24x 05/06 one, then you could switch to the 411 ecm from an older 4L60e LS engine application.
Both of these are long shots, but might be doable.
Starter mount is a non-issue.
[This message has been edited by fieroguru (edited 08-23-2018).]
I was going to do remove dod and cable for the gas pedal ,and use a truck computer ,and a turbo.
AFAIK, removing DOD on an LS4 is a pretty involved process. For starters, the Lifters, Cam and Oil pump must be replaced
------------------ " THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite. "THE COLUSSUS" 87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H " ON THE LOOSE WITHOUT THE JUICE "
AFAIK, removing DOD on an LS4 is a pretty involved process. For starters, the Lifters, Cam and Oil pump must be replaced
I have been there, https://www.fiero.nl/forum/Forum1/HTML/098288.html Paid as much for the kit as the engine, next time I'll buy the parts, wound up not using the TTY head bolts that came with the kit, as well as the exhaust manifold gaskets, since I'm running the LS7 manifolds... Had to buy the pump seperatly, didn't come with the kit... (you can supposedly run the dod pump, I didn't want to take any chances... Got the GM Performance Parts pump...
Price wise, wouldn't it just be easier to do an LS2/3 instead? After all the work in the LS4 you probably paid for the LS2/3 already.
The price for a used but good running aluminum block RWD LS engine are normally $3K-$6K, especially when talking about the 6.0 and larger engines. It is hard to get an aluminum 6.2L shortblock for under $1900. Then add in the cost/complexity of buying all the LS4 parts to improve fitment into a Fiero and it is hard to beat and the all aluminum LS4.
The LS4 is detuned and an overdrive chain/'gear set is used to further reduce torque so a 4T65E-HD can stand up. Triple Edge Performance makes some BA high performance versions of the 4T65E-HD.
Price wise, wouldn't it just be easier to do an LS2/3 instead? After all the work in the LS4 you probably paid for the LS2/3 already.
are you kidding? a RWD LS2/3 with Archie kit will cost 2x to 3x as much as a LS4. First the LS4's are cheap but harder to find. $500-1000 on average. A LS2/3 is going to run you $1500-3000 easy. Then you have to purchase a Archie kit, thats $5K to start, more if your adding a manual trans. You don't even need a kit for the LS4. add all the bits and pieces and your looking at $10-12K for a LS2/3 vice $3-4K for a LS4.
[This message has been edited by qwikgta (edited 08-29-2018).]
are you kidding? a RWD LS2/3 with Archie kit will cost 2x to 3x as much as a LS4. First the LS4's are cheap but harder to find. $500-1000 on average. A LS2/3 is going to run you $1500-3000 easy. Then you have to purchase a Archie kit, thats $5K to start, more if your adding a manual trans. You don't even need a kit for the LS4. add all the bits and pieces and your looking at $10-12K for a LS2/3 vice $3-4K for a LS4.
Not kidding, was merley a question. The last time I priced out an LS4 they were still a bit high. What I have not realized was the fact that the LS2's were still so pricey. Just like GI Joe, knowing is half the batter.
For my LS4, I have less than a $1,000 in the engine and DOD delete kit, where I've really spent money is all the support parts to make it work, Still needed for the RWD engines and you still need an adapter after that, LS4 is by far the best bang for the buck.
