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Old 01-18-2016, 12:31 PM
chevysquid chevysquid is offline
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Default 496 Build and opinions welcomed

Building a 496 for my 71 Malibu to replace the 350 small block. Here's what I have so far:

Mark IV 454 2 bolt block
496 rotating assembly:
Scat 9000 4.25 crank
Scat 6.385 rods
Forged Wyseco +20cc pistons
Weiand Stealth Oval Port Intake Manifold
New oil pump, pickup, and stroker clearanced pan with trap door
Lunati retrofit hydraulic roller lifters

I planning using the Brodix Race Rite 270 oval port heads. Still saving some cash for that though. So, the obvious question. What cam? It will be a hydraulic roller. This is not a car that will spend any measurable time at the track, so having good vacuum and drivability is more important than ET's. I'm willing to leave a little on the table. I know I can get a custom cam from Straub, but I'd rater spend $300 for an off the shelf cam vs $600 for custom cam if I can. Not ruling it out, but I know there are guys out there who can give real life experience recommendations.

My car:
1971 Malibu, 3.55 gears in a 12 bolt, Turbo 350, I will get a torque converter with the stall required for the completed setup.

I have been looking at these two cams, what do you all think?

https://www.lunatipower.com/Product....d=2156&gid=289
Retro-Fit Hydraulic Roller Cam. High performance street cam. Likes upgraded intake, carb and exhaust. Needs 2800 RPM stall converter in most cases. Requires 9.5:1 compression for maximum performance.
•Advertised Duration (Int/Exh): 282/290
•Duration @ .050 (Int/Exh): 231/239
•Gross Valve Lift (Int/Exh): .600/.600
•LSA/ICL: 110/106
•Valve Lash (Int/Exh): Hyd/Hyd
•RPM Range: 2200-5800

http://www.herbertcams.com/240-250-d...0lc-2000-6200/
RPM Range: 2000-6200

Advertised Duration: 295/305

Duration @ .050: 240/250

Lift: .570/.570

Lobe Center: 110c


Big Block Chevrolet V8 67-93 396-402-427-454

BB Chevy Hydraulic Roller Cam- Strong mid-range power. Stall or manual. At least 9.5:1. Moderate idle.

Last edited by chevysquid; 01-18-2016 at 01:13 PM.
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  #2  
Old 01-18-2016, 04:46 PM
flash flash is offline
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I have no clue but maybe WildBill or one of the other more knowledgeable folks will jump in.
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  #3  
Old 01-18-2016, 06:27 PM
carpoor carpoor is offline
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Straub offers the "shelf" Clay Smith legend series camshafts. Mike Jones - camking on TC also offers custom cams for well under $600.

JMHO
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1972 SS 454 Chevelle LS5/M21/12 bolt 3.73 posi
1969 Malibu COPO L72/M20/12 bolt 3.31 posi
1968 Malibu LQ9/4L80E/12 bolt 3.73 posi
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Old 01-18-2016, 06:28 PM
chevysquid chevysquid is offline
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I was checking out one of the clay smith cams also, think it was called the "old School".
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Old 01-19-2016, 07:19 AM
carpoor carpoor is offline
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That's the one. I helped a good friend put together a SBC for his project. We used one of those shelf cams after talking with Chris Straub. It sounds awesome, has great road manners, and makes plenty of power.

I have a custom cam spec'd by Kurt @ Bullet Cams. No data yet, progress on my car has been at a standstill since April.
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1972 SS 454 Chevelle LS5/M21/12 bolt 3.73 posi
1969 Malibu COPO L72/M20/12 bolt 3.31 posi
1968 Malibu LQ9/4L80E/12 bolt 3.73 posi
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Old 01-19-2016, 01:09 PM
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Rattler Rattler is offline
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Have you tried the CamQuest website from Comp cams? It's a great tool for selecting a camshaft.

http://www.camquest.com/
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1964 Malibu SS, now a LS1 and T56, Back halfed, rollbar, narrowed 9 inch, 4.11 gears and 31x16x15 Mickey SSR's on Weld wheels.
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Old 01-19-2016, 07:41 PM
chevysquid chevysquid is offline
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Thanks for the link!
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Old 01-30-2016, 01:31 PM
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badrad badrad is offline
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I think the Lunati is a better cam for you.
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