formularpm

My combo is: 355cid, Ported ProTopline 200cc aluminums, 10.3:1 compression, 1.75in shorties, StealthRam, 1.6 rockers, 3.45 gears, converter (stall to be determined after cam choice). I am willing to deal with a choppy idle, and if the car is driveable on the street, thats good enough for me. I just want decent power brakes. Im planning to get it ground on a 112 LSA as opposed to the 110*, hopefully this will help out the vacuum some. What are you guys opinions? Too much? Will a mail-order custom PROM (pcmforless) be able to take care of the programming for a cam this big? Anyone used this cam?

gen3z

go for it ,the 288 cam is fine especially with the 112 lobe sep,had the 286 110 lobe it was more aggresive than i wanted for my driver it would have stayed in my bird if it had a 112 lobe,you should consider a 3200/3500 stall,just my opinion i am sure many will agree....

formularpm

I was originally going to go with the SLP 2600 stall, but that probably wont be enough for this cam. I will probably end up with something in the 2800-3000 range if I go with the 288. Forgot to mention the specs... 288*/294*, 236*/242* @ 0.050, .555"/.576" lift with 1.6s, 112* LSA

OMINOUS_87

Dont get stuck on only looking at XE cams.

Check out the GM 847 or if you really want the best of all worlds check out the Crane solid street roller grinds.

We are in the process of slapping together a Crane solid roller HSR 383, 236/244 @.050

formularpm

I was looking at the XE cams because I heard that they can provide better vacuum due to their aggressive ramp rates. Not sure if theres any truth to this, however.

MrDude_1

solid rollers have more agressive ramp rates then hyd lifters will ever have.

OMINOUS_87

How many miles per year you plan to drive the car?

Once you take a hydra roller up past 230 or 236 @.050 vaccum and idle will really start to take a hit, in the XE series.

A solid roller will give a much better idle, a much fatter TQ curve, work better with big heads as it will get to max lift faster, and will not float the vlaves.

This Crane we are plugging into the 383 HSR will be our first solid roller motor, however it wont be the last as I never plan to run a hydra roller cam again in a weekend/cruiser car.

formularpm

I know, I meant compared to other hydraulic roller cams.


Omnious, the car is a sunny weekend only type, not a daily driver. I was under the impression that a solid roller will clatter enough to give a knock sensor false signals. Or is it a different type of vibration that the sensor can differentiate? Too bad I just bought a set of Comp R hydraulic lifters, hard to justify buying a set of solids and letting a $200 set of lifters sit on the workbench. Do you think that vacuum would be bad enough that reserve canister would be a must with 288HR?

OMINOUS_87

I think it will be safe to assume that vaccum will be very questionable with a hydra roller of that size in a 350.

OMINOUS_87

It would need to be disabled via the chip.

OMINOUS_87

I would think long and hard about the valvetrain in a weekend pleasure cruiser.

I took the XE plunge and its cool, however once I get some cash in my pocket I am going solid roller. I dont like the idle of the hydra roller all that much, 224/230 cam.

The bottom line is that in the size range you want to run, a solid roller looks real atractive: better idle, fatter curve, no valve float, good chance of getting through emissions.

You could always sell the R lifters.

MrDude_1

my understanding is you can also disable it with a simple resistor.

OMINOUS_87

Sure, either or will work just fine.

formularpm

Thanks for the advise guys. I think Im going to go with an XR282HR instead.

OMINOUS_87

Did yo look into the GM 847 cam?

97pontta

What are the specs on it?

OMINOUS_87

http://www.cranecams.com/?show=brows...tType=camshaft