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Suspension and Brakes
IRS Bushing kit experiences
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<blockquote data-quote="Warhorse Racing" data-source="post: 1484516" data-attributes="member: 23098"><p>I've used most of the FTBR parts on my 2004 V6 and my 2000 GT autocross cars. I chose to go with poly bushings in the rear upper and lower control arms to save some money. On my (roughly) 220 hp V6, wheel hop isn't a major issue. My 300 hp GT has more wheel hop, but not enough to hamper performance on an autocross course.</p><p></p><p>I would suggest going with the FTBR lowering rear diff mount and the improved Ford Racing diff cover. As other people will tell you, taking the IRS out to swap parts requires a lot of time and effort. It's best to improve everything all at once.</p><p></p><p>I used the standard Delrin rear diff mount on my 2000 GT; it requires some grinding of the bushing, and depending on other mods, grinding of the metal bushing housing to avoid hitting the sway bar.</p><p></p><p>These videos might help you make a decision. They cover the parts I used, some install tips, and a review of how the parts performed. The V6 in this video won a local CAM Class autocross championship in 2019. If you have any questions, please ask here or in the comments on YouTube.</p><p></p><p>[MEDIA=youtube]9T46tdvDnt4[/MEDIA]</p><p></p><p>[MEDIA=youtube]g4Ezcsopi7M[/MEDIA]</p></blockquote><p></p>
[QUOTE="Warhorse Racing, post: 1484516, member: 23098"] I've used most of the FTBR parts on my 2004 V6 and my 2000 GT autocross cars. I chose to go with poly bushings in the rear upper and lower control arms to save some money. On my (roughly) 220 hp V6, wheel hop isn't a major issue. My 300 hp GT has more wheel hop, but not enough to hamper performance on an autocross course. I would suggest going with the FTBR lowering rear diff mount and the improved Ford Racing diff cover. As other people will tell you, taking the IRS out to swap parts requires a lot of time and effort. It's best to improve everything all at once. I used the standard Delrin rear diff mount on my 2000 GT; it requires some grinding of the bushing, and depending on other mods, grinding of the metal bushing housing to avoid hitting the sway bar. These videos might help you make a decision. They cover the parts I used, some install tips, and a review of how the parts performed. The V6 in this video won a local CAM Class autocross championship in 2019. If you have any questions, please ask here or in the comments on YouTube. [MEDIA=youtube]9T46tdvDnt4[/MEDIA] [MEDIA=youtube]g4Ezcsopi7M[/MEDIA] [/QUOTE]
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