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Miami GenV LT1 Build
Well after delaying my car 6 months, I finally pulled the trigger on the first few pieces…
Gen V LT1/TR6060
IRS 3.55 Cast Iron Diff
Saturn Vue Electric Power Steering
Holley Terminator X with Touchscreen
Coach Controls Wiring
The usual other stuff like stereo, AC, windows etc. Plan to do lot of custom body mods. The car is slated to land in July, I will slowly gather parts in the mean time.
I debated a long time on whether to go with a Torsen 3.73 or clutch type. In the end this engine just has so much torque with the VVT that 3.55 made more sense for cruising speeds on the highway. This rear end came out of a manual 3.55 car with a claimed 80k miles, which is really hard to believe with how clean it is. I took all the needed parts off and will be sandblasting, painting and new seals soon.
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5F93335A-1ED6-4E14-9C91-8FADA97E1215.jpg
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These small photos drives me nuts in threads. I assume the only way to post full size in the thread is to use the [IMG] code with a link to a 3rd party website?
Last edited by Kbl7td; 05-06-2023 at 11:38 AM.
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Hello. Sounds like you are putting together plans on a very custom build. I look forward to following along. Welcome!
As far as getting full size pictures in your posts, the forum provides a way to do this--see the instructions here: https://thefactoryfiveforum.com/show...tures-in-posts. It's handy to use a photo resizer before uploading to your album, so the pictures load faster. For example, I use a very simple (and free) program called PhotoResizeXXXX.exe. Substitute the XXXX with the resolution of your choice. I use 2000, which provides good detail, but still provides fast loading of the photos. You can Google Photo Resize to find it, and other free programs similar.
Chris
Coupe complete kit delivered: 4/22/24.
Build Thread. Coyote. T-56. IRS w/3.55. Wilwoods. PS. HVAC. Side windows.
MK4 Complete kit.
Build Thread Index. Delivered: 10/15/2020. Legal: 7/25/23. Coyote Gen3. TKO600 (0.64 OD). IRS w/3.55. PS. Wilwoods. Sway bars. This build is dedicated to my son, Benjamin.
Build Thread.
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I too look forward to following your build.
I'm curious what made you want to go with the LT1 instead of LS3-based engines which have more support from Factory Five. Maybe it's all the same installation parts (motor mounts, driveshaft, headers, etc), I haven't researched the LT1.
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Hi Kbl7td,
Congratulations! I am in Miami and have a Gen 2 type 65 coupe. Give me a call at your convenience, 305-505-0463.
Herb
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Originally Posted by
JimStone
I too look forward to following your build.
I'm curious what made you want to go with the LT1 instead of LS3-based engines which have more support from Factory Five. Maybe it's all the same installation parts (motor mounts, driveshaft, headers, etc), I haven't researched the LT1.
Right now used prices of LS and LT are about the same. About the same weight and size. Main difference is no one wants to mess with the direct injection or the VVT on the LT. The ECU is also a little more costly. But the low end torque is what I’m after. I used to have a base C7 that was tuned, the thing was insane. I’m not too worried about having to shift the mounts around etc. I know I’ll have to move some stuff.
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Originally Posted by
1965daytona
Hi Kbl7td,
Congratulations! I am in Miami and have a Gen 2 type 65 coupe. Give me a call at your convenience, 305-505-0463.
Herb
Will do! I would like to see one in person, never have.
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Can anyone confirm if the mustang brake shields are used on the IRS? The ones that come with the donor? Also I believe the old half shafts get tossed as well?
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My build has taken a hiatus as I had to cancel my build and push it back several times due to time issues. I just reordered a base kit again this past Wednesday. Few questions.
I will be doing the IRS and front LCA tubular.
Do I need to source the front spindles and hubs? The website is a little unclear if those are provided when you order the LCA tubular arms.
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Another good reason to go with the LT vs LS (35 - 60 additional HP):
LT engine.jpg
Should be a fun project, congrats!
F5R #7446: MK4, 302, T5 midshift, 3.55 Posi IRS, 17" Halibrands
Delivered 4/4/11, First start 9/29/12, Licensed 4/24/13, off to PAINT 2/15/14!! Wahoo!
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Front mocked up with powerstop fittings. Let me know if anything looks out of place.
Fuel system in place.
Last edited by Kbl7td; 01-22-2024 at 10:22 AM.
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This week I’ll be doing brake lines. 3/16 Nicopp. Setting and drilling panels. I’ll more than likely prep the IRS frame brackets for POr15 and get that done so I can mount the diff and rear IRS for the last time.
Attempting to put in a steering rack out of an Oldsmobile intrigue so I can have a more finished look, as well as electric power steering. This all is proving to be a lesson in fabrication.
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What seats did you order?
F5R #7446: MK4, 302, T5 midshift, 3.55 Posi IRS, 17" Halibrands
Delivered 4/4/11, First start 9/29/12, Licensed 4/24/13, off to PAINT 2/15/14!! Wahoo!
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Originally Posted by
MPTech
What seats did you order?
These are the seats. Lots of people use the same seat but I wanted to explore some other options. These are priced very very reasonable. The quality is amazing. Really nice feel and build to them.
At 5’11 190 I’m not exactly tall. Unless you’re below 5’9 I don’t understand how a seat slider is warranted in this car, I already feel like my chest is at the wheel and head at the ceiling and roll bars.
https://www.amazon.com/gp/aw/d/B09H7...b_b_asin_title
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Originally Posted by
Kbl7td
I trimmed the body to get the seat to go back to the rollcage. It made quite a difference.
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Originally Posted by
burchfieldb
I trimmed the body to get the seat to go back to the rollcage. It made quite a difference.
I was considering this. I assume this doesnt mess with the panel alignments. Thats definitely a weird area of fiberglass.
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Great choice for a donor engine/transmission. I have looked at Copart auctions, lots of late model Camaro SS's out there with salvage titles just in the Western states. I have one more restomod build in me and that drivetrain is what I would use to hot rot a vintage Camaro or Firebird.
Would you share what you paid for the engine and transmission on a pallet and who they were purchased from. I know it is cheaper in the long run to buy a complete donor car, but a lot more work too.
Thanks
MK4 base kit, 2004 Mach 1 donor, 4.6L DOHC, TR-3650 5-speed, narrowed stock axle with 3.55 gears and TruTrac, PS, PB, ABS, 17" Halibrand replica wheels, started 12/2011, registered 9/2014, sold 3/1/2018.
1970 Mustang Fastback Coyote powered Boss 302 tribute. Started 10/14/16.
Gen 3 Coupe Base Kit non-donor build. Ordered 4/5/2024 to be received August 2024.
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I removed the gas pedal from the factory bracket and made my own bracket which moved the pedal closer to the foot box. Less expensive than buying a different pedal.
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Originally Posted by
Alan_C
Great choice for a donor engine/transmission. I have looked at Copart auctions, lots of late model Camaro SS's out there with salvage titles just in the Western states. I have one more restomod build in me and that drivetrain is what I would use to hot rot a vintage Camaro or Firebird.
Would you share what you paid for the engine and transmission on a pallet and who they were purchased from. I know it is cheaper in the long run to buy a complete donor car, but a lot more work too.
Thanks
eBay. I’ve been watching them for years. The LT tends to hang around a similar spot to the LS. There’s definitely more moving parts to the LT, Direct injection, high pressure pump, addition of the VVT and DOD on all engines, etc. I think that’s why the prices remain similar to the LS.
I had a 2017 corvette that was scary fast, this should be even more terrifying. Terminator X to the rescue with traction control.
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Originally Posted by
MC Builders
I removed the gas pedal from the factory bracket and made my own bracket which moved the pedal closer to the foot box. Less expensive than buying a different pedal.
Holley terminator X requires a specific pedal, went down that road on my SLC and this time just decided to order the smallest pedal from them. That way I don’t have problems.
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Quite a project as that engine will make the car a beast. I plan to order my couple on 4/5, but going with a more conventional SBF 363. What is going to be unique on mine will be the use of the 10R80 with a external controller. There is a adapter plate available to permit bolting up the 10R80 to a 302 block. I really love the modern automatics as they shift faster than anyone can a manual and they are very robust too. I will install paddle shifters and a Lokar sport shifter to select gears. Going to be so much fun. The 363 will be stack injected and should dyno at about 550 crank HP. Not cheap, but the looks of the stacks are tough to beat.
MK4 base kit, 2004 Mach 1 donor, 4.6L DOHC, TR-3650 5-speed, narrowed stock axle with 3.55 gears and TruTrac, PS, PB, ABS, 17" Halibrand replica wheels, started 12/2011, registered 9/2014, sold 3/1/2018.
1970 Mustang Fastback Coyote powered Boss 302 tribute. Started 10/14/16.
Gen 3 Coupe Base Kit non-donor build. Ordered 4/5/2024 to be received August 2024.
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Originally Posted by
Alan_C
Quite a project as that engine will make the car a beast. I plan to order my couple on 4/5, but going with a more conventional SBF 363. What is going to be unique on mine will be the use of the 10R80 with a external controller. There is a adapter plate available to permit bolting up the 10R80 to a 302 block. I really love the modern automatics as they shift faster than anyone can a manual and they are very robust too. I will install paddle shifters and a Lokar sport shifter to select gears. Going to be so much fun. The 363 will be stack injected and should dyno at about 550 crank HP. Not cheap, but the looks of the stacks are tough to beat.
Will the 10R80 fit in the tunnel of the Type 65 Gen 3 Coupe? It is a little over 5 inches wider and about 4 inches taller than the Tremec T56 Magnum-F. It is also about 4 inches longer.
My Type 65 Coupe: Ordered May 27, 2021. Arrived November 19, 2021.
I would like to treat my gas pedal as a binary operator. It would be nice to get the cooperation of everyone in front of me.
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Originally Posted by
Skuzzy
Will the 10R80 fit in the tunnel of the Type 65 Gen 3 Coupe? It is a little over 5 inches wider and about 4 inches taller than the Tremec T56 Magnum-F. It is also about 4 inches longer.
I will find out. I can weld, so some modifications are likely necessary. I have a 6R80 in the 70 Mustang restomod I am building. I did have to modify the tunnel and the firewall on the Mustang, but not as extensively as you might think.
I am going to make it fit and the extra 5 inches of wheelbase over the MK4 will help with the driveshaft length. I am not worried, at most I will mod the 3/4" tubing and aluminum sheet metal. After restomoding my 70 mustang, not too much scares me anymore.
Wider and taller I get, but longer I really doubt it as the slip joint that is normally part of a manual transmission is part of the driveshaft for the 6R80 and 10R80 transmissions. My 6R80 actually looks stubby compared to a standard T5. When I get a chance, I will measure a T5 at a friends place vs my 6R80. Wanna bet which one is longer and I will take the 6R80 as being shorter.
I should get the kit late June or early July based upon expected lead times according to Factory Five.
Last edited by Alan_C; 03-30-2024 at 06:44 PM.
MK4 base kit, 2004 Mach 1 donor, 4.6L DOHC, TR-3650 5-speed, narrowed stock axle with 3.55 gears and TruTrac, PS, PB, ABS, 17" Halibrand replica wheels, started 12/2011, registered 9/2014, sold 3/1/2018.
1970 Mustang Fastback Coyote powered Boss 302 tribute. Started 10/14/16.
Gen 3 Coupe Base Kit non-donor build. Ordered 4/5/2024 to be received August 2024.
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I will say I have a ton of room in front of the engine. About 18in. The back is about 1-1.5in to the diagonals near the “bell housing”. I have no pan hanging below the frame nor trans.
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Originally Posted by
Kbl7td
I will say I have a ton of room in front of the engine. About 18in. The back is about 1-1.5in to the diagonals near the “bell housing”. I have no pan hanging below the frame nor trans.
I can imagine you have just about all the room in the world. The LSs and LT1s are about as compact as any modern engine out there. When I was thinking about building a 69 Firebird Convertible Trans Am tribute, I would have gone with the same drivetrain as you are in your coupe. Lots of HP and torque and in plentiful supply in Phoenix and the surrounding states. It appears that the Chevy boys aren't too good at keeping the rear in line and end up hitting something or putting it in a ditch. I was quite surprised at the number of good donors that were available. To the point, the higher the performance level of the Camaro, the more cars were at junk yards until you got to the ZL1, then limited production volume made those hard to find if you could find one. In that case, a Cadillac CTS-V became a better donor choice as there are a good number of those out there. The LT4 is a great engine, kind of sorry I won't get my hands on one anytime soon and probably never as I have a plan for building out my stable of cars and they are all Fords. I will put a SBF 363 in my coupe, so room around the engine should be similar to yours. The adapter plate to adapter the 302 block to the 10R80 looks to be about 1/2" thick or so. So I will hope that I can get the 10R80 in there will minimal modifications. Unlike with my MK4, I will have a full build thread to lead the way for others to consider a modern automatic. My new garage will start in 4 or 5 weeks as the County only needs one more drawing to issue my permit to build, yah! Once the garage is up and occupiable and the Mustang is finished, I will dive into the coupe build feet first. I am buying now as the Spring sale will let me deduct $1000 from the 2015 IRS upgrade and there is a price increase coming. My guess is the price increase is at least $1K. So ordering on or before 4/5 can potentially save as much as $2K.
I will keep watching your build and Eric's to see if there is anything I have overlooked in my planning and I am sure there is.
MK4 base kit, 2004 Mach 1 donor, 4.6L DOHC, TR-3650 5-speed, narrowed stock axle with 3.55 gears and TruTrac, PS, PB, ABS, 17" Halibrand replica wheels, started 12/2011, registered 9/2014, sold 3/1/2018.
1970 Mustang Fastback Coyote powered Boss 302 tribute. Started 10/14/16.
Gen 3 Coupe Base Kit non-donor build. Ordered 4/5/2024 to be received August 2024.
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Last edited by Kbl7td; 04-15-2024 at 07:51 PM.
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