The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Factory 402 cam specs

davepl · 03-03-2012, 09:02 PM

In case anyone else finds it useful, I found this as a starting point, but it's the LS3 (330hp), and while we may use the same cam, it's possible that ours is even tamer.

Camshaft number = #3874872
Camshaft Intake duration @ .050" == 196°
Camshaft Exhaust duration @ .050" = 196°
Camshaft lift - Intake == 0.398"
Camshaft lift - Exhaust = 0.398"
@ 114° LSA

Still though, if you know the actual numbers for the truck version, please chime in!

03-03-2012, 09:02 PM	#2
davepl Registered User Join Date: Aug 2006 Location: Redmond, WA Posts: 6,332	Re: Factory 402 cam specs - desktop dyno In case anyone else finds it useful, I found this as a starting point, but it's the LS3 (330hp), and while we may use the same cam, it's possible that ours is even tamer. Camshaft number = #3874872 Camshaft Intake duration @ .050" == 196° Camshaft Exhaust duration @ .050" = 196° Camshaft lift - Intake == 0.398" Camshaft lift - Exhaust = 0.398" @ 114° LSA Still though, if you know the actual numbers for the truck version, please chime in!