Other

Why does a Chevelle TH400 have less torque?

Why does a Chevelle TH400 have less torque?

While rolling at a slow speed fully depress the throttle to see where the RPM will flash (or peak) to. This method will not be true if tires spin or the car is rolling too fast. Due to the turbine already turning in the torque converter (it is the part the input shaft is splined into) you end up with less torque multiplication.

What was the Wot on a 1970 GM TH400?

Thanks, Bill….I suspected, the “6 bolt converter” might possibly have been used, on other GM brands, and some non-High Performance vehicles, as well, as the “High Performance” solid lifter GM TH400 cars …Don. Governor programming was around 5200-5500 WOT shift points.

Where can I find the latest torque specs?

Find the most up-to-date torque spec listings in electronic format. FelPro-Only.com is your convenient source for advanced sealing information. It’s the place to learn and share “tricks of the trade,” find proper diagnosis and installation instructions, and enjoy easy access to parts reference.

When did the Chevy 400 engine come out?

by Moss Strohem. The 400 CID Chevy small block engine was produced from 1970 until 1980 and was the largest displacement engine made in that platform. It was intended as a low performance, high-torque engine primarily used in Chevy’s heavier passenger cars and light-duty trucks.

What is the bore of a Chevy 400?

Internal Dimensions. General Motors achieved the 400 SBC engine’s displacement by increasing the bore to 4.125 inches and the crankshaft stroke to 3.75 inches – actual displacement is just over 400.9 cubic inches. In contrast, the Chevy 350 CID engine uses a bore of 4.00 inches and a stroke of 3.48 inches.

While rolling at a slow speed fully depress the throttle to see where the RPM will flash (or peak) to. This method will not be true if tires spin or the car is rolling too fast. Due to the turbine already turning in the torque converter (it is the part the input shaft is splined into) you end up with less torque multiplication.

How did the Chevy 400 get the extra displacement?

GM had to cast the block for the 400 CID engine differently to gain the extra displacement. To gain the extra 1/8-inch bore diameter, the cooling system water jackets between adjacent cylinders were eliminated on the 400 block.

Author Image
Ruth Doyle