Lockup switch for 700r4 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**dennislbrooks** · 04-09-2017, 04:06 PM

700r4 install is complete. I used a 5 pin relay off the brake switch as instructed above from John's70 and DKB81 - works great. I used the shifter knob switch and a small led light in the mega shifter housing -- works well.

Changing to an OD on the bbc was a good thing, should have done sooner. With 265/70x17 with a 3.73 gear, with lockup it turns about 1350 rpms at about 50 mph. Add 200 if not locked up. My np208 speedo gears are within 2 mph of a tom tom gps at 55 mph. I run a 396/350hp comp cam and a 1650 lockup torque converter.

thanks guys

04-09-2017, 04:06 PM	#9
dennislbrooks Senior Member Join Date: Feb 2004 Location: Williamsburg, Ohio Posts: 1,766	Re: Lockup switch for 700r4 700r4 install is complete. I used a 5 pin relay off the brake switch as instructed above from John's70 and DKB81 - works great. I used the shifter knob switch and a small led light in the mega shifter housing -- works well. Changing to an OD on the bbc was a good thing, should have done sooner. With 265/70x17 with a 3.73 gear, with lockup it turns about 1350 rpms at about 50 mph. Add 200 if not locked up. My np208 speedo gears are within 2 mph of a tom tom gps at 55 mph. I run a 396/350hp comp cam and a 1650 lockup torque converter. thanks guys Attached Images __________________ 1942 Chevy 1/2 ton Rod, 1959 GMC 1/2 ton Fleet Stepside, 1967 Chevy SWB K10, 1985 Corvette Coupe 4+3, 2015 Chevy Duramax reg cab 4WD W/T Last edited by dennislbrooks; 04-09-2017 at 04:10 PM. Reason: words



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