BBC flat tappet cam?

[grumpyvette]

Hey guys, I am currently in the processes of building a 496. Any suggestions or helps is greatly appreciated! I have been looking into the Solid Flat Tappets because the Roller cams are just simply out of my budget. I would like to reach the 600 hp mark if possibly but if I cant getting close is also nice. This car is going to primarily driven on the street but also get a good amount of track time too on the weekends. This car is a factory AC car as well and also a 4 speed car as well! The vehicle is a 71 Camaro!

List of parts that I have
Rotating Assembly - 496 Stroker kit (scat/weisco) +20cc pistons (Skip White)
Heads- Procomp 320cc oval port 119cc 2.25 1.88 valves (Fred White)
Compression- Should be around 10.1 - 10.37 (ballpark by head and piston cc)
Carb- Quickfuel HR-850 (double pumper)
Intake- Holley strip dominator
ignition- msd 6al
Rear gears- 3.73

The 2 Solid flat tappet cams I was looking at are

Lunati 402a7Lun

Advertised Duration (Int/Exh): 288/296
Duration @ .050 (Int/Exh): 255/263
Gross Valve Lift (Int/Exh): .612/.630
LSA/ICL: 110/104
Valve Lash (Int/Exh): .024/.026
RPM Range: 3000-7000

http://www.lunatipower.com/Product.aspx?id=2045

Howards 121932-10

Basic Operating RPM Range:3,200-7,000
Intake Duration at 050 inch Lift:254
Exhaust Duration at 050 inch Lift:260
Duration at 050 inch Lift:254 int./260 exh.
Advertised Intake Duration:289
Advertised Exhaust Duration:295
Advertised Duration:289 int./295 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:0.623 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:0.629 in.
Valve Lift with Factory Rocker Arm Ratio:0.623 int./0.629 exh.
Lobe Separation (degrees):110
Camshaft Gear Attachment:3-bolt
Intake Valve Lash:0.022 in.
Exhaust Valve Lash:0.022 in.

http://www.summitracing.com/parts/hr...make/chevrolet

If these two cams don't really match my combo I am open to any suggestions and help. Everyone's suggestions and help is greatly appreciated.

either of those cams linked too above will work,and more than likely produce a bit more peak power, but on a street car,Id tend to go slightly less lift and duration as durability not peak power would be my main concern, ID suggest you read this link and also get the cool face lifters and matching valve springs and check clearances
http://garage.grumpysperformance.co...lifter-to-increase-oil-flow.11152/#post-49968
http://www.crower.com/camshafts/chevy-396-454-compu-pro-solid-cam.html
but Id point out that in similar builds Ive had really good results with a CROWER 01349
its got a bit less duration and lift than the ones linked too above but its also easy on the valve train, and produces brutal torque in most 10.2:1 496 builds , 600 peak hp might be impressive., but instant and massive torque is more useful in a street driven car where youll rarely spin the engine over 5000rpm and a massive and flat torque curve helps move a fairly heavy camaro, I doubt the peak power will suffer much either

why not call crower and see what their tech guys suggest

crower 619.661.6477

I think your missing the point here, with the longer duration cams, first get suggestions from at least 5 DIFFERENT manufacturers
and ID suggest a 105-107 LCA less than 250 duration at .050 lift and UNDER .600 lift
yeah! I know you want the big lift and duration to have bragging rights....your better off showing them tire smoke and tail lights and not mentioning the slightly conservative but very effective cam specs

below is what DD2000 software predicts,

yes swapping to a good single plane intake gets you lots closer to 600 peak hp, but its going to cost you in the off idle torque and instant response to throttle changes


its generally a very good idea to keep all the cam, lifter,valve train and cylinder head components in matched sets, keep components in labeled matched sets, if you intend to reuse used parts in a rebuild. as each wears in, or laps in to its matched components a bit differently thus random assembly increases the chances of future parts
failures
https://www.summitracing.com/search?SortBy=BestKeywordMatch&SortOrder=Ascending&keyword=POW735002

http://garage.grumpysperformance.com/index.php?threads/another-496bbc.5123/

http://garage.grumpysperformance.com/index.php?threads/oval-port-afr-head-565-bbc.11076/

http://garage.grumpysperformance.com/index.php?threads/cheaper-454-chevy-build.4620/

http://garage.grumpysperformance.com/index.php?threads/540bbc-335cc-afr-head-combo.10627/

http://garage.grumpysperformance.co...ting-big-block-chevy-454-cam-dyno-test.10181/

http://garage.grumpysperformance.com/index.php?threads/basic-lower-cost-big-block-build.10502/

http://garage.grumpysperformance.com/index.php?threads/489-bbc.8383/

http://garage.grumpysperformance.co...rt-a-non-issue-based-on-mis-information.6414/

CROWER
http://www.crower.com/media/pdf/chevrolet.pdf

CRANE
http://www.cranecams.com/uploads/catalog/Crane Cams Master Catalog.pdf

ERSON
http://www.pbm-erson.com/UserFiles/Documents/Catalogs/2013 erson catalog.pdf

HOWARD
http://www.howardscams.com/howards2015.pdf

HERBERT
http://www.herbertcams.com/herbert-cams-cam-kits/

ENGLE
http://www.englecams.com/downloads/2010_engle_catalog.pdf
spending a few days or even weeks doing careful research well before you start writing checks or pulling out a credit card, can save you thousands of dollars and months of work, understanding the difference in component quality ,correct clearances and how and why each component is supposed to perform and the potential stress its under helps you make far more intellegent choices and tends to allow you to get an engine built that far exceeds the quality and performance of the average crate engine assembly


http://garage.grumpysperformance.com/index.php?threads/adjusting-valves.196/

http://garage.grumpysperformance.com/index.php?threads/rocker-push-rod-wear-issues.9815/

http://garage.grumpysperformance.co...u-buy-bare-or-assembled-heads.534/#post-41293

http://garage.grumpysperformance.co...e-springs-and-setting-up-the-valve-train.181/

http://garage.grumpysperformance.com/index.php?threads/valve-train-clearances-and-problems.528/

http://garage.grumpysperformance.com/index.php?threads/sellecting-cylinder-heads.796/

http://garage.grumpysperformance.com/index.php?threads/valve-seat-angles-and-air-flow.8460/