The car: 70 Maverick 2 door
Purpose of build: Long distance touring car for 1 lap of America road trip.
Current motor: 250 inline six. approx 150-160 HP at flywheel
Plans for future motor: 87 and up 302 roller, GT40P, near stock cam, Holley 600, DUI dizzy(1 wire, no box), headers. ( 230-250 hp to start with, maybe more later)
Current transmission: C4 SBF bell, low mount starter, unknown year, unknown condition.
current rear gears:3.00:1
planned rear gears: 3.80:1
I want an overdrive transmission for fuel efficiency. Not interested in how great a built C4 is...
I want an automatic transmission. Not interested in a manual for this build.
First idea for transmission change: install AOD because it has no electronic controls and can be installed in a custom car with no computer, and it bolts to any SBF winsor block and I can use the same trans with the 250 inline six motor I have and then the 302 i will build later.
down side to AOD: bad reputation for durability, poor performance (gearing), incorrectly adjusted TV cable can destroy transmission quickly.
Current idea: AOD case, 4R70W internals (older one with speedo gears), 4R70W torque converter, and flex plate, constant pressure valve body,
up side to 4R70W stuff in AOD case: still bolts to any SBF Windsor, no computer controls needed, lower first and second gears for better performance from same HP, heavier duty parts with much better reputation for durability, constant pressure valve body to eliminate TV cable and associated TV cable problems.
1. Any down side to this setup?
2. is this the ideal transmission setup for a light highway car with no computers? (2400 lbs with a 250 and automatic)
3. Has anyone here had a trans like this built?
4. Can anyone help me put together a list of parts to get from each trans?
5 Did I miss anything that would prevent me from having this assembled by my trusted local transmission shop if I bring them all the right parts?