Torq converter help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Cbo68 · 07-21-2019, 06:50 PM

I have a 68 K20 with a 350/th350 combo. I picked up the transmission without a torque converter and needing help on the right one. I like the B&M converters but curious as to what stall. Here is what I’m working with for a cam and gear ratios.

Lift
.450 intake .460 exhaust
Duration
222° intake, 222° exhaust @ .050" tappet
Centerline
114° ATDC intake, 114° BTDC exhaust
Rpm Range
2000-6000

Dana 44 14 bolt
4.10 ratio

Also any insight on how you decide this information. I’ve always just went 500rpm over the low end cam range but I know weight of vehicle and gear ratio play a factor. Thanks

07-21-2019, 06:50 PM	#1
Cbo68 Registered User Join Date: Mar 2018 Location: Kent Washington Posts: 43	Torq converter help I have a 68 K20 with a 350/th350 combo. I picked up the transmission without a torque converter and needing help on the right one. I like the B&M converters but curious as to what stall. Here is what I’m working with for a cam and gear ratios. Lift .450 intake .460 exhaust Duration 222° intake, 222° exhaust @ .050" tappet Centerline 114° ATDC intake, 114° BTDC exhaust Rpm Range 2000-6000 Dana 44 14 bolt 4.10 ratio Also any insight on how you decide this information. I’ve always just went 500rpm over the low end cam range but I know weight of vehicle and gear ratio play a factor. Thanks

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