Re: L88 cam in L78?
If I may chime in;
FWIW, the 2 smallest solid grinds Crane makes work extremely well on mild BBC applications.
P/N: 133841
3000-6500 rpm
238*-248* @ .050
304*-314* adv. dur
114* LSA
.544-.567 lift (gross)
.022-.022 lash
P/N: 134781
3800-7000 rpm
248*-258* @ .050
314*-324* adv. dur.
110* LSA
.567-.590 lift (gross)
.022-.022 lash
The first of these 2 cams provides a nice flat power curve and a fairly mild idle. The 2nd cam is a bit "peaky" with a noticeable midrange charge, and a somewhat more noticeable idle.
I ran cam #2 in a well-worn LS6 "clone" motor (it did have a Dart intake and 2" Hooker headers) in my `67 Chevelle years ago, and it's 1 of the best street/strip cams I've ever used. Blowing through a "way-too-small" 2 1/2" exhaust, with only a 2500 converter and 4.10 gears, this was an easy low-12-high-11 second combination. In a 396 with OEM manifolds, I'd opt for the smaller cam.
Re: The advertised rpm ranges Crane recommends... I've found that these cams often come in sooner than Crane advises; perhaps this is an attempt on Crane's part to keep people from "over-camming" their engines, I don't know.
Just throwing my .02 in. [img]/ubbthreads/images/graemlins/beers.gif[/img]
Eric
|