GtpKo Posted April 20 Report Share Posted April 20 (edited) I've wanted to do this swap for about 10 years. Ever since coming across Kuntzie's 5-speed swap thread from back in 2009, and then Noah Brainerd's F40 swap thread from around the same time over on GPF, it's been on my someday-to-do list. Back in around 2013 I think it was, I came across an F40 for something like $150 that was missing 5th gear. I thought it was going to help me finally get started but then family medical issues set that back into the "someday" list. Fast forward to this past summer of 2022, I came across the F23 swaps of Tyler Pitman and Terrell Smith. At the time, I had the same reaction as everyone else and thought "There's no way it could hold, it's rated for..." and so on. Then I found out that those GM ratings are just the max that GM planned on putting it behind, not necessarily what it can actually hold. For example, the F35 is weaker than the F23 as has been learned by the J-Body guys. Internally at Getrag, the F23 was known as the 287, the successor to the 284. So far it's proving it very well could be. Watch this and this. There is more than one way to do this swap, I am taking what these guys have done and trying a couple of changes. Background story aside, here is the current parts list - will update this list as necessary: Some of the model years given are an example and should work for the same model range. F23 from 00-03 Cavalier or Sunfire with the 2200 SFI - not Ecotec as the bellhousing is different. Look for 8th digit of VIN is a 4. From same car get the shifter, full clutch pedal assembly, shifter cables, clutch reservoir, clutch cylinder w/ hydraulic line. EDIT 5/2/2023: You have two options for passenger side axles. Use an intermediate shaft plus a more normal cv shaft, or one really long passenger side axle. For the intermediate shaft route, get the shaft from something like a 94 Sunbird with a 3.1. (Possibly could use an intermediate shaft from a Saturn Vue?). Then pick up a longer passenger side CV axle from 04 year LeSabre. Swap the female tripod from the drivers side axle onto the LeSabre axle. This creates a longer new passenger side axle to match the length of the intermediate shaft. Custom shaft mount and OFA clearance ARE issues you need to resolve. For the one really long cv axle route, get a 32" long passenger side axle from a Jeep Grand Cherokee, around the 2002 model year, at least I think thats the year. You'll have to basically use that as bar stock to create a custom cv axle with a standard male tripod end. The internal axle shaft is what needs to be 32" once its recut. Passenger side CV Axle from 2nd gen W-Body such as Buick Regal or Grand Prix GT(Not GTP or Regal GS) - this will be the new driver's side axle. 96 Camaro RS or Firebird (3.8 w/ 5-speed) flywheel, shaved down to about 0.84" - or about 0.25" shaved down on the clutch surface. Longer F-Body flexplate/flywheel bolts. GM Part#24505092. Smaller brake booster from an 02 Monte Carlo. Here is the car I got my stuff from: Here is the easiest part, the brake booster swap. I found the easiest way to remove and install these is to use a long bar on the studs to twist it out instead of struggling with the tab in the back. Since I wanted to include a hand brake, I wanted to keep the shifter to the right a bit instead of centering it. Basically, the same orientation that it originally came with in the Cavalier. But to do that I needed to fab up a new mounting plate. First I used some thin sheet metal to make a template and then welded up the plate from that. I know - my welding sucks, but I'm still learning, getting better. To mount this, I'm taking advantage of the extra slots for these clip-on stud things and modifying one of them to be longer Here is where they go, notice longer stud on the lower right - also holding the e-brake bracket. Next, with the new mounting plate installed - note the narrow nut on the bottom left. Also, you can't see it but sound-dampening rubber foam is underneath the plate. And with shifter installed - now you can see why that nut had to be narrower. There is also some interference from the plate/cables and the rear seat air duct, but I'll sort that out later. Next, modifying the brake pedal assembly. Note - be careful with cutting magnesium alloy, not sure how flammable the magnesium shavings could be. I tried to keep the 2nd bolt hole for where the steering column attaches, but that has to come off too. It's a minor bolt anyway, there are 3 more, 2 of which are the major ones, so it's fine. Steel part that bolts to the firewall and what needs to be cut off Here is approximately how they will be installed. Different than how it looks in this pic, I have the clutch pedal mounted a bit lower than this with its bolt studs even horizontally with the bottom right brake bracket stud. I have a better pic of the firewall later on. I have much more to post, but I'm out of time for now. More to come soon. Edited May 2 by GtpKo More info primergray, pwmin, Raffaelli and 1 other 1 3 Quote Link to comment Share on other sites More sharing options...
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