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Hey all. I'm planning a pretty out-there build and want input from people who've cut up Zs before I start. The car: a 1975-78 280Z 2+2 (GS30, 2605 mm wheelbase), orange. Budget-minded: about $4k for the car and about $3k for the gearbox. The plan: a 911-style rear-engine layout. - Nissan VR30DDTT twin-turbo V6 mounted fully behind the rear axle on a dry sump, aiming for about 600 hp - Porsche 997 Turbo G97/50 6-speed transaxle converted to 2WD (a 996 G96/00 is the budget fallback), with 930/996 Turbo CV axles - A bolt-in cradle so the engine and gearbox drop out the bottom, plus a louvered top service lid - 288 GTO-style slotted quarter-window vents feeding the turbos - LED headlights in the stock buckets, flares, black wheels I've done 3D layout renders (attached). Questions: 1. Adapter: has anyone made or bought a VR30 to Porsche G50/G97 bellhousing adapter? Who would you go to? 2. Weight bias and handling: with that much weight behind the axle, where would you start on rear suspension geometry and spring rates for a street car? 3. Chassis: how would you strengthen the unibody and design the rear subframe/cradle so the rear doesn't twist? 4. Cooling: front radiators with long lines, or side/rear radiators? What has worked for you? 5. Wiring/ECU: what standalone ECU would you run on a VR30 (Haltech, Link, MoTeC, other)? 6. Precedent: has anyone actually done a rear-engine Z? Build threads would help a lot. Any "don't do it, here's why" feedback is welcome too. Thanks!
