[wrea3_98]

I am really considering a hydraulic roller as I have been thru the wiped cam issues myself. Never used one and always wnted to try one out. Any recommendations with my setup?

[screamingchief]

I can see this thread is heading towards the same old pi$$ing contest...

I'm not even sure I wanna post any more thoughts on this???

Everyone likes what they like,and they seem to feel everyone else should follow that logic.

I dont feel that way at all myself,everyone is free to use what ever they wanna use,it's up to them in the end.

No sweat off my back.

If I told ya'll what cam I'm using in the same basic combo as this one,I'm sure I'd catch all kinds of grief from some of the other posters on this thread...

But that's fine by me,I had my reasons for that choice.



(BTW,could I possibly have used anymore emoticons???)

BP.

[GTOLou]

Originally Posted by wrea3_98

I am really considering a hydraulic roller as I have been thru the wiped cam issues myself. Never used one and always wnted to try one out. Any recommendations with my setup?

Wrea - go w/ the HRoller. Man, I know it is more money - but if your like me, you'll have other stuff to worry about. Don't worry about wiping lobes.

HR cam discussions in a street 455 start w/ a cam like the CCams HR288 (I'm sure other makes have cams w/ similar specs). It has 236/242/110lsa. I "think" Dude and SD make a grind that is a little spicier and you can call either of those two ( I think the Butcher special and Old Faithful are the cams respectively). I "think" those two cams were designed for street/strip work - call those guys, great reputations and will help you optimize your combo.

I've run the HR288 in a 3700lb GTO, four speed w/ 3.42 gears. I surmise that a 67 bird w/ 3.55 gears and a four speed w/ street ported heads (I've run Butler street ported heads and that cam) would be pretty sweet and driveable.



I DON'T have the experience that these other guys posting have - but my reccs would be a performer RPM intake w/ tuned built qjet or TII, 1" spacer and a holley 4150 (again - built to your specs) and at least 1 3/4 headers (1 7/8 better) and at least 3" head pipes w/ x-pipe. The four speed will be harder to get ET's faster - the lighter you can make that car, the better. Also, lighter = less broken stuff w/ a manual tranny and easier to get traction.

[71 T/A]

Originally Posted by GTOLou

Wrea - go w/ the HRoller. Man, I know it is more money - but if your like me, you'll have other stuff to worry about. Don't worry about wiping lobes.

HR cam discussions in a street 455 start w/ a cam like the CCams HR288 (I'm sure other makes have cams w/ similar specs). It has 236/242/110lsa. I "think" Dude and SD make a grind that is a little spicier and you can call either of those two ( I think the Butcher special and Old Faithful are the cams respectively). I "think" those two cams were designed for street/strip work - call those guys, great reputations and will help you optimize your combo.

I've run the HR288 in a 3700lb GTO, four speed w/ 3.42 gears. I surmise that a 67 bird w/ 3.55 gears and a four speed w/ street ported heads (I've run Butler street ported heads and that cam) would be pretty sweet and driveable.



I DON'T have the experience that these other guys posting have - but my reccs would be a performer RPM intake w/ tuned built qjet or TII, 1" spacer and a holley 4150 (again - built to your specs) and at least 1 3/4 headers (1 7/8 better) and at least 3" head pipes w/ x-pipe. The four speed will be harder to get ET's faster - the lighter you can make that car, the better. Also, lighter = less broken stuff w/ a manual tranny and easier to get traction.

GTO Lou, what times did you run with the HR288 cam?

[GTOLou]

Originally Posted by 71 T/A

GTO Lou, what times did you run with the HR288 cam?

I've got that cam in a street 76 TA - haven't run it in that. When it was in my 69 GTO, 474 fastest 1/8's were in the 7.6-7.7 range w/ 95-96 mph. I always left HP on the table - my MPH always predicted a better et than I actually got. Heavy gto, four speed, plus - I'm a weekender doing this for fun. My 60 foot times rarely got under 1.9 (1.86 fastest?).

[Skip Fix]

OK why don't we look at an UD 288/296 that has similar specs. Bullet and Lunati still can grind them on what ever lobe sep you want, so maybe a good choice too with similar specs. I've got multiple dyno pulls in a 400 and a 455 where it doesn't lay down at 4900! Lee Atkinson's old early Bird ran mid to low 11s with it, that was not a high compression engine. So we can keep the same specs basically (231/239) and have alot of data from lots of guys including the Butlers that used that cam.

One thing I find interesting it seem the cam gets the blame for the rpm limitations and no mention of the head. Almost all the formulas for rpm peak use the head CSA or other numbers for an rpm prediction. We're asking a 215-230 cfm iron head to feed 455-470 ci and wonder why the rpm is limited?? In fact just last night was talking to a well know Pontiac "stocker" that using PORTED D ports on a 455 SS cat they were building was head limited.

FWIW one of our west Texas Pontiac guys has had good luck with the Comp XE 274 and the 284 in some pretty fast Pontiacs, but then his cars go pretty fast regardless of what he has in them.