When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Yes I would believe so.
I have had Black top ZC cams in an 86 D16a1, which made the car run very slow.
I also had brown top ZC cams in an 86 D16a1, which made the car slightly faster.