Building for TQ

[Tigger]

We talk alot around here about building up HP and such but what should be done different if you want to build for good low end TQ with an AMC V8?

[jeepsr4ever]

Good point, i will need a little time if i am going to chime in on this one :-|

[ROBERT11]

Never hear much about that.... Interesting topic the 'Rat has told me about a couple 4 cylinder diesel blocks up for auction on the Gov Liquidation site. Would changing your overall gear ratio's help with torque? :-|

[Tigger]

Yes changing the over all gear ratio's will create more torque to the wheels, but I am not wanting put that tall of a gear in the rear end for highway driveability with a 4speed tranny.

I have always drive 6cyls off road and there is TONS of low end torque out of them (idle - 1800). What RPM range does a V8 normally wheel at?

math geek time

250tq x 6.72 1st gear x 2.72 xfercase low x 4.88 diff gears = 22,299.6 Ft lbs of TQ at the rear axle.

To keep that rate of TQ in low gear and first but have 4.10 Gears I would need 22,299.6 / (6.72 x 2.72 x 4.10) = 297.6 Ft Lbs of TQ from the engine at the same RPM as before.

The other thought is with 1st gear being SO low, using 2nd gear would be a good option to have and with the T18a 2nd being a 3.9:1 which is respectable and able to keep me wheeling and not just spinning.