Re: No low end torque

Posted by ChadS on December 18, 2006 at 10:41:48 from (66.228.96.153):

In Reply to: Re: No low end torque posted by North Dakota H Puller on December 17, 2006 at 13:16:16:

Bout anything is better than the ol flat top pistons. Here is whats going on in your engine,,,, Big cam, big valves, bigger carbs, and low compression pistons,,, your creating way to much air flow than what your pistons can draw in. When the air freeflows too much,,, you lose the most important characteristic that goes with low end torque, and thats manifold vacuum. Its losing its ability to draw in the air charge when the load is applied. The pistons mechanical compression is not pulling in enough air to compliment the modifications, and doesnt pump up the cyl properly,,, so,, you have to look at ways to increase the vacuum pressure in the manifold. Actually going back to the OEM H carb would be the best choice at this time, until you do something in the short block. Its not going to increase compression,,,, but its going to move your torque range from high rpms, to low rpms. Slow that air flow down enough to help put a better draw in the cyl, it mixes better, and builds more low end power. Too big of breath,, and it falls on its face on the low side. Its very possible to make your engine better with what you have now,,, just change the induction system to help the low compression feed the engine more efficiently in the lower rpm ranges. In this case, smaller carb is best. Chad

Replies:

• Re: No low end torque North Dakota H Puller 10:59:42 12/18/06 (1)
  • Re: No low end torque ChadS 13:16:21 12/18/06 (0)

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