negative valve overlap?
#1
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Hey all, ive been reading some guides on this website about camshafts, and I wanted to know about valve overlap.
I know overlap causes a choppy idle, but how does negative overlap affect the vehicle?
I know overlap causes a choppy idle, but how does negative overlap affect the vehicle?
#2
TECH Apprentice
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To much overlap will cause a choppy idle but it depends on the cubic inches and compression of that engine. So one engine may idle fine wile the other engine will have a chop.
Negative overlap or a engine with low overlap compared to one with higher overlap will idle better( more vacuum) and have better low speed throttle response. Get a cam for your application not someone else's.