Anything taller than 3.23 you’re going to be slipping the clutch starting out in first gear a little more than you’d probably like.
Had a 1969 330 hp 400 4-speed Firebird all original drivetrain with the wide ratio Muncie and 3.23 rear end and it was acceptable on clutch slipping in low gear start off but not great.
The 1976 T/A 455 cars with the anemic 200 hp 7.6:1 engines all came with wide ratio 4-speeds and 3.23 gears.
3.08 would be the max I’d go with a 455 HO 4-speed.
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1964 Tempest Coupe LS3/4L70E/3.42
1964 Le Mans Convertible 421 HO/TH350/3.08
2002 WS6 Convertible LS1/4L60E/3.23
1966 VW Type 2 Single Cab Pickup 140hp 2276
1956 VW Type 2 Panel Van 36hp 1200
1957 VW Type 1 Beetle 180hp 2276
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