Time to cam a Buick

[std]

I'm looking for a new cam for a friends Buick 455. It's in a 70 GS. There was a little head work done. Should be 9.5-10 to 1 compression. It had maybe 8.5. He liked the cam that was in it, but it seemed to need more vacuum.

Here are the specs:
.490/.487 lift
282/303 advertised
233/248 at .050
109/117 lobe centerline
113 lobe seperation

My thought was a little less duration and a little more lift.

What do you all think.

[Scott Liggett]

Re: Time to cam a Buick

282/303 dur @ .050? Are you sure those aren't advertised duration? That's the kind of numbers of duration for a cam with like .700 lift.

[Two Lane Blacktop]

Re: Time to cam a Buick

Would call (at least) 2 cam companies,

feed them all the specs/info they need

and listen to their tech advisors before

making a choice.


Crane, Lunati, & Comp are favorites,

but you'd probably want to add a call

to www.TAPerformance.com for their

input on the BB Buick. ---

[JeffMcKC]

Re: Time to cam a Buick

I dont know what the specs are cant be hard to find but the "old kenny bell cheater cam"

[std]

Re: Time to cam a Buick

282/303 dur @ .050? Are you sure those aren't advertised duration? That's the kind of numbers of duration for a cam with like .700 lift.

Oops, made a mistake. I went back and modifyed my post.

Thanks

[Eric68]

Re: Time to cam a Buick

The cam he had sounds about perfect IMO. Not sure how extensive the Buick heads are ported, but it looks to me like the 455 stock heads flow similar to the old SBC Camel humps only weaker on the exhaust side. Unless there is a lot of port work done then it won't pay to try to rev the big Buick very high. IMO

The compression increase should help it idle and increase low end TQ so maybe the "need more vacuum" issue will disappear just from the compression increase.

[std]

Re: Time to cam a Buick

Thanks.

He thought he needed more vacuum at idle to help his power brakes. The car ran pretty good.

Very little porting, as far as I can tell.