Does the Erson 280/270 or 270/270 cam use the larger Chrysler lobes or do they rely on the smaller chevy lobe and how doe they compare in perfomance to the comp 264 cam(currently running this cam-not impressed). Thank you.
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

I went from the Comp 264 to the Erson 280/270. There is a world of difference. You will like it.

Much more torque over a much wider range.

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Yeah....Im the one who destroyed this rare, vintage automobile.....

Depending on your choice of lobe separation results may vary, but if you buy the over the counter grind you will have torque over a broad range like Sandy stated, it will not have a problem reving to 6200 rpm and you will have low end grunt as well as the engine pulling all the way up to the top end. I have run this cam with 10:1 SCR and a clifford Hyperpak intake it pulled great in a heavy duster and was very street driveable.
With an OD tranny and 3.55's it didn't have a problem doing a mid 16 at the track and still drove home at 24 mpg highway(long trip)...averaged 21 mpg highway (short trips to work).

I'm currently running it in another duster with an offy intake smaller carb and single large exhaust, I think I will go back to duals on that car to pick up more power but it doesn't have a problem grunting through the gears.

-D.Idiot

That is a great question!
I have been wondering the same thing. Thanks for the input on driving characteristics.

Another question.
Did anybody advance the cam? or did you install it straight up?

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Aggressive Ted

http://cid-32f1e50ddb40a03c.photos.live ... %20Swinger


74 Swinger, 9.5 comp 254/.435 lift cam, 904, ram air, electric fans, 2.5" HP2 & FM70 ex, 1920 Holley#56jet, 2.76 8 3/4 Sure-Grip, 26" tires, 25+MPG

X2 as I'll also be looking for a cam.

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65 Dart station wagon slant 6 - now under construction
47 Dodge Custom 4 Door sedan
87 D100 Short Bed slant 6

Retired USAF 1966-1986
Retired US Postal Service 2004-2014

The cam I got was ground 4 degrees advanced and I installed it that way.

Would be curious to see if anyone went 108 LSA with a 102-101-ish centerline.

-D.idiot

The Erson had the larger chrysler lobe. Not sure if they still do with the company selling and moving. All depends on where they get the blanks. Ask them. I haven't purchased an Erson for at least five years.

CJ

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Part of Tyrde-Browne Racing

Dit oh!

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Yeah....Im the one who destroyed this rare, vintage automobile.....

Thanks fellas,that info helps alot. On a related note,what mods have been done to your cylinder heads.I have the Engine builder 170/144 valves and 340 springs and plan on doing my own port work from what i have learned on the site. Thank you 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

!.72 intake 150ex Chev valves + springs....pocket ported like a chev....radiussed chambers ...60 off the head .....100 off the block

9.25 scr

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Yeah....Im the one who destroyed this rare, vintage automobile.....

1.70/1.44 SI slant six valves, back cut with 3 angle valve job, pocket porting and gasket matching for small runner Clifford Hyperpak intake...10:1 SCR...

New combination 10:1 SCR, 1.70/1.44 Enginebldr valves and springs, same type of porting above using an offy manifold and small 4 barrel.

-D.Idiot

I'm also presently running an Erson 280/270, clocked at 102.
The lobes on mine are the same width as the stocker.

Ported & polished (I do my own), 1.70 & 1.44 Stanwood (Engnbldr) valves, .110" off the head, fresh "stock" Erson springs, stock "light" retainers, lightened stock rockers, stock dumbells & pushrods, and notched the stock slugs for the valves.

Still fussing a bit with lash settings, but she's solid & strong right up through 6000, with no float.
(when I want it ..... I shift at 5400 usually)

Car's a middie @ 1420 lbs (see Flyin' Brick in my sig's photo links), running three 1 3/4" SUs.
Can light'em up in any gear at will, due mostly to running our HA/GR class's 6" street tread bias plies.

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Sex, drags, and rock & roll.
Dick, 225% crazy.
Hobby (cars, that is) Photos link

hey old6rodder that thing is awesome. do you have any video of it in action?

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1966 Plymouth Valiant, 225, 3 on the tree, 8 1/4 3.21 sure grip, hyperpac, holley 650dp, holset h1c

Not on someone else's thread, I'll post up a link to what little I have over in the Social Corner.

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Sex, drags, and rock & roll.
Dick, 225% crazy.
Hobby (cars, that is) Photos link