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2015+ Shelby GT350 Mustang
Magnum XL swap ?
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<blockquote data-quote="ANGREY" data-source="post: 16417950" data-attributes="member: 188865"><p>Some updates for you guys. I have my transmission "plan" all mapped out now.</p><p></p><p>1) Several vendors off a pretty comprehensive "magnum XL" swap kit, that comes with everything you need (or just about). The trans, the bellhousing, new throwout, cross member (Tremec shifter), harness (for the reverse lockout) most even offer an aluminum driveshaft and some offer clutches.</p><p></p><p>2) The Magnum used to come in 4 variants: wide ratio (which starts with a 2.97) with a .50 overdrive and .63 overdrive and close ratio (which starts with a 2.66) with a .50 and .63 overdrive.</p><p></p><p>Tremec has since discontinued offering either wide or close boxes with the .50 overdrive (due to either lack of demand or customer complaints).</p><p></p><p>3) I found a shop that swaps out the front plate to convert the Magnum to an internal pump design (like the 6060 and 3160) so I can keep the external cooler capability. I'm currently in the process of sorting out whether I can modify my GT350 lines or have to get something custom fabbed up. It seems the return line port on the Magnum is in a different location, but the feed line to the cooler should be similar if not identical.</p><p></p><p>4) It just so happens that same outfit offers the most competitive price on the base swap kit and I opted out of their driveshaft and clutch offerings. They're going to swap the front plate and do a full boogie upgrade to the box</p><p></p><p>4a) They're upgrading the blocker rings to carbon and also swapping out the pads to Vespel forks and pads (allegedly the best or one of the best), they're swapping 2nd and 3rd gear to "non advanced" synchro gears (which is what the earlier versions that tremec offered, but swapped them due to complaints about grinding in 2 and 3, but was misdiagnosed as a different problem with the rings and pads). They're also doing a REM polish. They don't offer a cryogenic treatment (in house) and could send it off but they were skeptical of the cost/benefits. So outside of cryo treatment, it's getting the full upgrades that others do for their upgraded boxes.</p><p></p><p>4b) They're also swapping out the overdrive to a .50 ratio, which is absolutely lovely for me. I have 4.09 gears and now it means I can cruise at just over 2k rpms at 80 mph, which for me saves me from long term hearing damage and also means I can take a phone call without having to slow down to 55 mph.</p><p></p><p>5) DSS makes aluminum AND carbon fiber drive shafts for the swap. I called QA-1 and they make custom shafts, but they don't offer anything standard yet and the custom shaft order doesn't allow for IRS or CV. So DSS it is.</p><p></p><p>6) I can reuse the hydraulic piston from the 3160 and the clutch I'm ordering is analogous to a previous gen GT500 setup (26 spline).</p><p></p><p>7) Direct trans shifters are plentiful and CHEAP (compared to the remote shifter). I haven't decided between the MGW or the Triax. The interweb is full of varying opinions, I loved my Triax on my previous direct mount setups and I like the set bolts for stopping over shift. I also like my gripper ball and custom insert I currently have from MGW. So I'm still sorting through that.</p><p></p><p>8) Research indicates that the external reverse lockout solenoid will probably require beating on the body to make it clear and not rub/vibrate. The 3160 and 6060 use shifter controls to keep you from inadvertently going into reverse. The shift patter on the Magnum makes this a bigger issue. Having it adjacent to 1st makes it much less likely than having it adjacent to 5th. At any rate, I Plan on using the solenoid. Some guys have modified the solenoid to simply "overpower" the lockout, but hopefully the harness ties in and with a simple connection to key on power, shouldn't be an issue.</p></blockquote><p></p>
[QUOTE="ANGREY, post: 16417950, member: 188865"] Some updates for you guys. I have my transmission "plan" all mapped out now. 1) Several vendors off a pretty comprehensive "magnum XL" swap kit, that comes with everything you need (or just about). The trans, the bellhousing, new throwout, cross member (Tremec shifter), harness (for the reverse lockout) most even offer an aluminum driveshaft and some offer clutches. 2) The Magnum used to come in 4 variants: wide ratio (which starts with a 2.97) with a .50 overdrive and .63 overdrive and close ratio (which starts with a 2.66) with a .50 and .63 overdrive. Tremec has since discontinued offering either wide or close boxes with the .50 overdrive (due to either lack of demand or customer complaints). 3) I found a shop that swaps out the front plate to convert the Magnum to an internal pump design (like the 6060 and 3160) so I can keep the external cooler capability. I'm currently in the process of sorting out whether I can modify my GT350 lines or have to get something custom fabbed up. It seems the return line port on the Magnum is in a different location, but the feed line to the cooler should be similar if not identical. 4) It just so happens that same outfit offers the most competitive price on the base swap kit and I opted out of their driveshaft and clutch offerings. They're going to swap the front plate and do a full boogie upgrade to the box 4a) They're upgrading the blocker rings to carbon and also swapping out the pads to Vespel forks and pads (allegedly the best or one of the best), they're swapping 2nd and 3rd gear to "non advanced" synchro gears (which is what the earlier versions that tremec offered, but swapped them due to complaints about grinding in 2 and 3, but was misdiagnosed as a different problem with the rings and pads). They're also doing a REM polish. They don't offer a cryogenic treatment (in house) and could send it off but they were skeptical of the cost/benefits. So outside of cryo treatment, it's getting the full upgrades that others do for their upgraded boxes. 4b) They're also swapping out the overdrive to a .50 ratio, which is absolutely lovely for me. I have 4.09 gears and now it means I can cruise at just over 2k rpms at 80 mph, which for me saves me from long term hearing damage and also means I can take a phone call without having to slow down to 55 mph. 5) DSS makes aluminum AND carbon fiber drive shafts for the swap. I called QA-1 and they make custom shafts, but they don't offer anything standard yet and the custom shaft order doesn't allow for IRS or CV. So DSS it is. 6) I can reuse the hydraulic piston from the 3160 and the clutch I'm ordering is analogous to a previous gen GT500 setup (26 spline). 7) Direct trans shifters are plentiful and CHEAP (compared to the remote shifter). I haven't decided between the MGW or the Triax. The interweb is full of varying opinions, I loved my Triax on my previous direct mount setups and I like the set bolts for stopping over shift. I also like my gripper ball and custom insert I currently have from MGW. So I'm still sorting through that. 8) Research indicates that the external reverse lockout solenoid will probably require beating on the body to make it clear and not rub/vibrate. The 3160 and 6060 use shifter controls to keep you from inadvertently going into reverse. The shift patter on the Magnum makes this a bigger issue. Having it adjacent to 1st makes it much less likely than having it adjacent to 5th. At any rate, I Plan on using the solenoid. Some guys have modified the solenoid to simply "overpower" the lockout, but hopefully the harness ties in and with a simple connection to key on power, shouldn't be an issue. [/QUOTE]
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