I just received my Erson 270 cam and lifters today and every thing looks good as far as oiling holes and overall appearance.
My question is where do I find what centerline to install it at.I have the cam card and there is a note at the bottom that says 111+4.My Comp 264 installs at 106 centerline but Im not familiar with the way the Erson cam card is layed out. Any help or advice is appreciated and wecome.
Thanks
HyperValiant

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1960 Hyper-Pac Valiant(rolling test-bed)
1963 Valiant V2OO(Son's summer project,- he just turned 15 )
1972 Valiant 4dr(Daughter Kelly's repair in progress)
1974 Valiant (v8) daughter Kelly's work in progress

No matter what the cam card says, I would not install it at higher than 104 deg. 111+4 probably means it's 111 LSA and ground 4 deg advanced, so it would be 107 straight up. Again, that is still too far retarded. If it were my car, I would put it at 101 or 102.

Lou

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Home of Slant6-powered fun machines since 1988

Erson grinds their cams with 4º advance already "built in". You should centerline the cam as cam card says.

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Juan Ignacio Caino

Please use e-mail button istead of PM'ing. I do log in sometimes but I'll be answering quicker thru e-mail.

Lou can you explain how you came up with the 107 number from the 111+4 number.I would like to know so I can understand more about cam degreeing.
Thanks
HyperValiant

_________________
1960 Hyper-Pac Valiant(rolling test-bed)
1963 Valiant V2OO(Son's summer project,- he just turned 15 )
1972 Valiant 4dr(Daughter Kelly's repair in progress)
1974 Valiant (v8) daughter Kelly's work in progress

I am just guessing since "+" usually means advanced and 111 is probably the LSA (same as centerline if cam is ground straight up).

I still think you should install it at 102 or so.

Lou

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Home of Slant6-powered fun machines since 1988

Lou ,I think your right about 111+4,I have been reading the cam card closer and understanding it a little more.
As far as dgreeing the cam with more advance,when I installed the 264 Comp in my Hyperpak 170 it fell in at 105.5 with a 4 dgree bushing,now Im wondering if I should have put in a 6 or 8 bushing.If I think I need more cam advance after driving it can I just tear down the front of the engine and install a different bushing or do I need to re-degree the cam?
HyperValiant

_________________
1960 Hyper-Pac Valiant(rolling test-bed)
1963 Valiant V2OO(Son's summer project,- he just turned 15 )
1972 Valiant 4dr(Daughter Kelly's repair in progress)
1974 Valiant (v8) daughter Kelly's work in progress

Oh, I'm sorry, you have a 170. In that case, I'd degree it as the cam card says. I believe one of the reasons for more advance is the 225s small bore/stroke ratio, where the 170 has a high bore/stroke.

Yes, you can just put in a different bushing later rather than re-degreeing the cam.

Lou

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Home of Slant6-powered fun machines since 1988

Lou ,thanks for the reply but I think I confused you.The Erson cam is for a 225 that I plan on putting in my Dart.I guess I was comparing apples to oranges between the 170 in my Val and the 225 Im gathering parts for.
I would like to talk to you at a later date about head mods for the Dart engine.
Thanks
Mark

_________________
1960 Hyper-Pac Valiant(rolling test-bed)
1963 Valiant V2OO(Son's summer project,- he just turned 15 )
1972 Valiant 4dr(Daughter Kelly's repair in progress)
1974 Valiant (v8) daughter Kelly's work in progress