Help me choose Cams

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Stratoraptor

New Member
Messages
30
Location
WPAFB, OH
Okay, so I finally ran into some money and I've been thinking about a cam upgrade. As far as I know, Kelford are the only ones that I know of that readily provide drop in parts. Taking a look at their selection, I've been wanting to go with their set with these specs:

i: 298 / e: 298 duration
i: 10.35mm / e: 9.30mm lift

...according to their site, they can use the stock shim over bucket design so I wouldn't have to mess around with that. They will be going into a stock engine with a stand-alone.

Anybody have advice? Are Kelford good quality?
 

BigSteve

Member
Messages
51
Location
Western Australia
Yes kelfords are good, I have kelford cams in mine.

You will need springs with that much lift, and as far as I know you also need some head work/grinding so that the cam lobes don't hit the head because that's a fair bit of lift.
 

spf_lexus

Active Member
Messages
2,266
Location
Murrieta California
...according to their site, they can use the stock shim over bucket design so I wouldn't have to mess around with that. They will be going into a stock engine with a stand-alone.

Lextreme.com sells regrinds in 2 different profiles that can safely use the shim over setup and cost a lot less. More food for thought.
 

kildea

New Member
Messages
49
Location
Boston, Massachusetts, USA
Lextreme.com sells regrinds in 2 different profiles that can safely use the shim over setup and cost a lot less. More food for thought.

This is what I had in mind too, but it appears that they are no longer offering them with lash caps, instead suggesting their new valves - well that's the response I got when I tried to order them - maybe they were temporarily out of stock?
 

spf_lexus

Active Member
Messages
2,266
Location
Murrieta California
I had a set that I sold to friend because I ran out of cash but the Lextreme cams had very consistent lobe finish. Indistinguishable from stock. I dont know what you mean by "squared off" but a cam profile is a cam profile wether it be a billet cam, cast cam or regrind. When you gain lift and duration the lobes will be fatter and longer (top to bottom). I drove ones of Lex's hybrid 4.7L's with the stage II profile and it felt like it was boosted, great gains.
 

ash

New Member
Messages
407
Location
qld
Lobe failure can be wrong springs
lack of nitriting / bad nitriting process after regrind or re welding
wrong oil
lack of oil
wrong assembly/ clearance settings
too cold engine temp

..

fixed..........
 
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