I am currently getting ready to build the motor for my 70 ls-5 chevelle, and I am not sure what the factory camshaft profile should have been, or is there an aftermarket camshaft that is close to the stock profile? If anyone knows what the lift and duration should be, it would be greatly appreciated.
Thanks

The LS-5 cam is the same as the L-34 350 hp 396 cam. It has .461 intake and .480 exh valve lift. Duration at .050 lift is about 218 degrees on both.

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von '69 300 Dlx SS TC #15 ACES #1575 HSCA #5
My '69 SS (http://mywebpage.netscape.com/jerryacheson/vons69.html)

Thanks for the quick response. I'll try to find one with that profile. Does anyone know of any company that is making factory replacement camshafts or will I have to go with an aftermarket camshaft?
Thanks again!

Crane make a " Blueprint " series of factory cams.Crane part number 969391.

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1969 El Camino
69 LS1 335 HP 427
( not the origional engine)
M21 12 Bolt 3:07's.
Daily Driver work truck.

Ya, and who will know, think you'd be much more pleased with their 272H10 Energizer.

Thanks for the replies.
427L88, I had considered going with something along the lines of their 272H10 Energizer, but I was afraid that it would not work well with my car being a turbo 400 car, and I really don't want to run a stall converter.
What's your opinion about whether it will need a stall or not?
Thanks again, all the help is appreciated.

The 272H10 works just fine with a factory convertor.

Thanks Travis, I was looking through a Chevelle parts catalog, and noticed that they had a converter advertised that said it was for a factory LS-6 car, and I was wondering if it would give just a little bit of stall without creating too much heat in the transmission and on the other hand maybe it would allow me to run a little bit bigger camshaft?
What's your thought's and opinion's?
Thanks in advance.

In my experience, the 272H10 doesn't need anything more than a factory convertor unless you have big heads or a single plane intake. It makes strong torque right off idle and pulls great up to 5000+, with just a hint of lope out the tailpipes. I don't know about the LS6 convertor, but if you are really worried about it you can use something like a 2000 B&M holeshot convertor and the factory tranny cooler will be fine. I am using this convertor in my truck with a pretty healthy smallblock and have done a lot of towing with it with no troubles at all.
While I don't have a ton of experience with BB's like most of these guys, I have had good luck with the cams that places like summit, PAW, etc carry as "house" cams. 1 in particular that we used on several 454's was 214/224@.050, .501/.527 lift. We ran this cam with stock springs in 2 different applications and they worked OK, and the cam pulled great from idle to 5000+ with just a slightly "off" idle at about 600 rpms. One of these engines went into a '73 camaro with a th350, 2.73 posi rear...about 9.0-1 compression, early small valve 396 heads, performer 2-0 intake, truck q-jet, 1 3/4" headers, etc...with a stock convertor this thing would burn the 235/60-15's off at 1/4 throttle.

Thanks again, the 272H10 sounds like what I will go with. I was just looking for something that will make good power when I want it, without sacrificing drivability. The motor is going to have the stock exhaust manifolds, factory cast iron intake, 290 casting heads, forged .30 over trw flat top pistons, so this camshaft should work well.

Travis,

You had good luck b/c that is about the combination that a BB cam like you mentioned would run best in!!!

Heck, it is even low enough so as not to overwork or lock-up the lo-po stock springs!

I bet your engine/s were real go-getters off idle and up to the spring limits!!!!! And a blast to drive b/c of NOT being in any way tempermental!!!


He, He,, I bet Ed would agree that your combination is LO-PO BSE!!!!! pdq67

The LS-6 convertor is probably the same one as the W-30 convertor. Just a little more stall than stock, generally around 2200 rpm.

Thanks bigdog454, that's what I figured it probably was, but wasn't for sure.

I'm guessing the cam you guys are talking about is the Crane grind thats 272 advertised,.515/.515,216 @ .050,112 LSA
I've run that cam in a stock 1973 454 (manifolds and low rise intake from a 70 396) with a M20 and 3.31's..pretty fun combo..very mild lope,and it sure had some strong low/midrange torque.With an automatic and mild convertor (like B&M's Holeshot 2000) it would be fun driver (not as fun as 4 speed http://www.chevelles.com/forum/wink.gif )

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My 70 SS396 (http://www.chevelles.com/showroom/mr4speed70SS1)
Engine pic (http://chevelles.com/showroom/mr4speed70SSengine2)
My Black Cherry 70 SS454 (http://www.chevelles.com/showroom/Photo0031.jpg)
The launch (http://www.chevelles.com/showroom/CClaunch.jpg) 13.13 @ 101.490/1.92 60 ft. with radials,2.73's,and thru the mufflers
1.90 Best 60 ft.
101.84 Best MPH
My Drag Race page and combo (http://www.prestage.com/site/site_display.asp?SiteID=589)
1968 Oldsmobile Cutlass convertible
1973 GMC Sierra 454 p/u
1985 Cadillac Eldorado (daily driver)
Chris Corwel,TC Member # 785
Member # 141 AMCA

pdq67, that thing was a real sweet daily driver. I had originally built that engine for my boss's '77 chevy 1 ton double cab dually. With 4.10's, it would lay 4 stripes like you wouldn't believe. When he sold the truck, we dropped in an old junker 396 and dropped the 454 into the camaro. To this day I have never driven anything that had so much off idle, part throttle torque. You had to be careful in town because just pulling away from a stoplight at light throttle the car would fishtail REALLY easy http://www.chevelles.com/forum/biggrin.gif

Chris I think the one you refer to the H272-2 PowerMax. Here's the goofy part, their PowerMax H290 is the same .050 duaration and lift as the Energizer 272H10 ( and might be the one you are referring to?), but the advertised seat duration is 290 versus the Energizers at 272. Huh? I should think its a slightly more aggressive ramp in the Energizer line, which is the least expesnive line.

Energizer 272H10. BTW, I ran their dual pattern equivalent of the solid LS6 cam, and I'll tell you what, you better have all of 2600-2800 stall to run an LS6 cam. Of course, I had fun with my 4 speed! http://www.chevelles.com/forum/eek.gif

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Gene
ACES / CanAm Chevelles
67 SS 427 (http://www.chevelles.com/feature/october2000.html)

I used to run the 272H Crane with .515 lift and 216 duration at .050. It was so powerful down low I could not do anything without slicks. With a 3.36 gear and a stock converter I was pulling 1.69 60' with slicks. That is a nice upgrade over the LS-5 cam. I think you will like it I pulled about 16" of vacuum too.

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69 Malibu 406 3680lbs Turbo 350 2400 stall, 3.73,XE274, Performer RPM Q-JET, 800 Q-JET, Sportsman2 64cc 11TO1 12.65@105.5 mph on Drag Radials

ACES Member #3635
Tri-State Chevelle Member# TSC-010
Larry G.

Thanks to all who responded, the 272H sounds like the one for my motor. I was looking for something with a little bit more power, and still be very streetable without a stall converter, and this seems to fit the bill!