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| LS4 / F40 swap - fieroguru (Page 123/216) |
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ghost187x
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FEB 18, 11:29 AM
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You could look into a Comp Oil-less turbo 7479 CT43X and mount it near the muffler would be. You only use water and no oil lines/scavenge pump. But you already bought the turbo so...
Z06 cam, LS9 cam, or Lil Jon Stage 2 cam can work.
Not sure if you upgraded springs but it is highly recommended.
Great build and thanks for helping me. Great customer service. 
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fieroguru
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FEB 18, 06:27 PM
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| quote | Originally posted by ghost187x:
You could look into a Comp Oil-less turbo 7479 CT43X and mount it near the muffler would be. You only use water and no oil lines/scavenge pump. But you already bought the turbo so...
Z06 cam, LS9 cam, or Lil Jon Stage 2 cam can work.
Not sure if you upgraded springs but it is highly recommended.
Great build and thanks for helping me. Great customer service. |
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I am likely going to mount the turbo in that general location... going to have to remove the trunk below the shelf.
Lil Jon Motorsports spec'd a camshaft for my engine and turbo combo: 221/225 .597/.600 112+4 and will run the BTR platinum springs he recommended.
It was 60+ degrees today, so I washed the LS4/F40 Fiero and spent a couple of hrs of driving around town. I will probably drive it the next couple of days.
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fieroguru
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MAR 12, 06:35 PM
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I picked up a DRO setup for the lathe and had a few hours today to get it installed. It was a universal setup, so I ended up making some of the brackets so they better fit this application.
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Derrick
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MAY 14, 02:02 AM
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I'm doing another 3800sc swap and wanting to use the F-40 as my transmission selection. I can not find any straight forward advice. If I do the trans swap I'm just putting some $$$$ out and getting the WCF kit. Still not sure about what axles to use and how far I need to move the drivetrain over. I seen on a thread "about an inch" not sure if that is enough information to just go hacking on my cradle. With a 3800 swap, all I should have to do is notch the cradle and drill new holes for the 2.8 engine mount. From the looks of the trans mounts from WCF it's straight forward on where to put them once I have the engine moved. This still leaves me with the question how far do I shift the drivetrain over to keep the axles at even lengths, what axles to use, and how to mod them? The WCF kit comes with the jack shaft. I've modified axles for past swaps, but information for f-40 swaps are very limited.
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Fast Unicorn[This message has been edited by Derrick (edited 05-14-2017).]
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fieroguru
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MAY 14, 03:29 PM
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| quote | Originally posted by Derrick:
I'm doing another 3800sc swap and wanting to use the F-40 as my transmission selection. I can not find any straight forward advice. If I do the trans swap I'm just putting some $$$$ out and getting the WCF kit. Still not sure about what axles to use and how far I need to move the drivetrain over. I seen on a thread "about an inch" not sure if that is enough information to just go hacking on my cradle. With a 3800 swap, all I should have to do is notch the cradle and drill new holes for the 2.8 engine mount. From the looks of the trans mounts from WCF it's straight forward on where to put them once I have the engine moved. This still leaves me with the question how far do I shift the drivetrain over to keep the axles at even lengths, what axles to use, and how to mod them? The WCF kit comes with the jack shaft. I've modified axles for past swaps, but information for f-40 swaps are very limited.
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WCF sells everything you need to install the F40 with the 3800. Mounts, flywheel, axles, cables/brackets, etc... just call them up and place the order.
If you want to piece it all together:
Flywheel & Clutch: http://specclutch.com/conversion_combos/view/11
Engine and transmission mounts: WCF or Fierorog
Axles & Intermediate Shaft: Cobalt SS (Supercharged version ,not the later Turbocharged) - just need to shift the drivetrain 1" to the passenger side.
Clutch Line Connector: WCF, Fieroguru Performance: http://www.ebay.com/itm/192...97&viewitem=&vxp=mtr
Shifter bracket & Cables: WCF, Fieroguru Performance: http://www.ebay.com/itm/192...id=p3984.m1555.l2649
The only part left is the intermediate shaft bearing mount and that will likely need fabricated.
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Derrick
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MAY 18, 01:43 AM
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Ok, so not much guess work if I got the F-40 kit from WCF. I know the F-40 swap is for the higher experienced fiero guys, so I was afraid to tackle the project. My brother in law has a service shop and certified welders, I'll probably have them do the cradle, trans/engine mount install, and so on. Also with PFF I should be fine.
I'll see if WCF will let me piece their kit. I like your 5-speed shifter/cable kit and world rather use a spec clutch. Thank you. ------------------
Fast Unicorn
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Bozzie
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MAY 18, 09:32 AM
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The shaft bearing mount is a issue. I have a 3800 w F40 as well. Archie Machines a Aluminum mount for the bearing .....BUT it bolts to where the engine mount would normally bolt to. I used a Aluminum oil pan and fabbed up a mount from the factory point on the pan.
Boz
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fieroguru
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JUN 19, 08:39 PM
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Not much to report on, just been driving the LS4/F40 Fiero. My goal was to long haul the 2017 Hot Rod Power Tour, but due to a work conflict, I had to miss the last 2 stops (Indy and Bowling Green).
While on the 2017 Hot Rod Power Tour the swap passed 40K miles since completed a little more than 4 years ago.
The best tank of gas was 28.8 mpg, the worst was 19.3 mpg, and the average over 1625 miles was 22.7. Not bad considering I ran A/C quite a bit and there was a lot more stop/go traffic this year vs. last year. I also did 2 autocross runs at Iowa Speedway and one 1/4 mile run at Gateway before a significant rain delay.
I wish I would have data logged the run as the power during the 1/4 mile seemed down (mph was off about 6 mph). It likely was a combo of sprinkling rain, engine temps being over 200 (195 thermostat and fans kick on around 198), running 92 octane vs. 93, and my tach acting up and reading high which likely caused me to short shift the first 2 gears. Shifting at 7200 rpm with a 6K tach is enough of a challenge when it reads right, down right impossible when it reads high.
Last night I swapped out the V6 tach with another one from the shelf and corrected some wasted effort from the initial install. I have been a V8 guy for years and converting the tach from V6 to V8 is just part of doing a swap... I didn't learn until after I converted the tach, that in stock form, the LS4 V8 outputs a V6 tach signal. I ended up having to change the tune for a V8 output to match my modified V6 tach... I like I said, wasted effort... So when it was time to replace the tach, I simply installed a stock V6 tach and changed the settings in the tune back to stock (V6)... works!
I am also going to swap out the thermostat for a 180 one and install a fan override switch. The cooling system is rock solid and quickly cools the engine when the car is moving or when the fan is on. I want to disable ecm control of the fan, but I would like to manually turn the fan on in the staging lanes to keep the car as cool as possible before the run.
My big project for the summer is to address the paint on the car. It is pretty much a disaster from certain angles, so I want to paint it. I really don't want to take the car down for months while I slowly make progress on the paint, or pay someone to paint it. So I have a complete set of spare panels that I am slowly working on. With this work, I am also adding trans am vents to the fenders, IMSA 1/4 panels, mustang convertible whale tail spoiler, and I am currently exploring options for a hood vent. I also plan to eliminate the antenna hole, all badge holes in the front and rear fascias, as well as Pontiac in the DS front headlight...
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fieroguru
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JUL 07, 11:43 PM
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Over the past few weekends, I installed the 180 thermostat, the fan manual override switch, configured the scanner upgrade on HP Tuners to datalog with the wideband for MAF as well as Virtural VE tables, and did a lot of WOT as well as normal part throttle data logging. Overall the tune was pretty close, but I did make a few small changes.
I really wanted a fan override switch that was about 10 to 25% smaller than this one, but couldn't find one I liked. https://www.amazon.com/SUND...arling/dp/B00P3TIS70
I haven't had any time to get back to sanding panels, but I did picke up a STM hood vent from The Driver
The other side project I have been researching is getting another F40 transmission... but not just any F40. FieroWannaBe1 shared some info about a Europe F40 version with a 3.09 final drive behind some Opel Insignia diesels (there is also a 3.35 version as well). http://vxoc.org.uk/download...20Specifications.pdf
I was able to track down a 2009 version on eBay.co.uk, and purchased it. It is crated and should be picked up by the shipper early next week and I should have it here about 7 days after it is picked up. This is a little bit of a gamble as the final drive parts might not be interchangeable with the G6 version, but it was worth the risk.
But if it works, 1st will be much longer with more opportunity to put the power to the ground vs. spinning. 1st will still be shorter than the T56 transmission with 4.10 gears, but 2-6 will be longer. With the lighter Fiero and future turbo plans, I think the 3.09 final drive will be very nice.
With 24.9" tires
code:
RPM Final Drive 1st 2nd 3rd 4th 5th 6th 70 mph 80 mph
7000 3.55 38.7 71.6 111 154 192 235 2081 2378
7000 3.09 44.5 82.2 127 177 221 270 1812 2071
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Bob2112
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JUL 08, 01:43 AM
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