Hello all, today's very long video is 5 days of work on my transmission compiled into one video. This is the start of turning this car into an 11 second speed machine.
Back in the late 90s to late 00s, the Grand Prix GTP was a formidable sports sedan, powered by the supercharged Buick 3800 V6 pushing 260 HP and 280 FT LB of torque, it caught many street racers off guard, it was common practice not to mess around with any Pontiac with a GTP or SSEI badge on it back in the day.
Those numbers are pretty average by today's standards, but given how impressive that was back then, it made me wonder what kind of power that would be, scaled to today's expectations.
The FWD 3800 is a very mod friendly platform thanks to the engine's well known reliability and ubiquity, The 4T65E transmissions they are commonly mated to on the other hand, are known to be somewhat fragile in their stock form, but can be built to handle some power with a few replacement parts, and that's exactly what I did in this video. The input shaft and drive chain are the two weakest links, both typically breaking right around the 300 HP mark. Thanks to ZZPerformance, I replaced both parts with the strongest hard parts you can possibly get on the market nowadays, and with those replaced, the strength of the transmission has almost doubled now.
Music: Neon - Tigerblood Jewel
Music sourced from Epidemic Sound
00:00 Intro
07:00 Donor Transmission Teardown
19:24 Car Teardown
31:12 Transmission Build
42:08 Reassembly
47:46 First Start
48:30 Outro and Test Drive