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Planned to reuse the old cam...now needing a new cam set...

Started by mhinders, April 09, 2013, 02:43:23 PM

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mhinders

Hi All,
I was planning to reuse the reasonably hot Compcam and lifters from the 383 in my new stroker...but discovered that 2 lifters hadn't been spinning properly...and now I suddenly have to decide on a new cam+lifters, and I hope for inputs!

My build:
- 512 cui 440Source stroker kit in a 400 B-block (bored, top-decked, studs and billet steel caps line bored etc)
- Stealth heads just lightly cleaned in the ports
- static compression expected to be 12.4-13
- modified for injection Mopar M1 single plane intake, fuel E85, direct sequential injection and ignition
- 1200 CFM throttle body
- Hooker Competition 1 7/8 coated headers
- performance prepped 727, but to begin with std 383 converter and 2.91 in the rear, std wheels and tires, B-body

The car will mostly be used on the street, with quite a bit of some longer distance trips. I bit of rough idle is desired...

What cam do you think would do the job here?

TIA,
Martin
Martin
Dodge Charger 1967, 512 cui, E85, MegaSquirt MS3X sequential ignition and injection

cdr

you are going to HAVE to change converter.. that engine is going to want an aggressive cam profile. & with that compression you will never stop it from detonation on pump fuel


http://www.hughesengines.com/Index/products.php?browse=category&level0=QmlnIEJsb2NrIDM4My0zNjEtNDAwIChMb3cgRGVjayk=&level1=Q2Ftc2hhZnQ=&searchmode=partnumber&page=3&partid=21867
Flat Tappet Hydraulic / Three Bolt Timing Gear. Use where rules demand a hydraulic camshaft. 3800rpm stall. 4.56:1 gear, large single plane or 2x4 intake. Stage II or Stage III HP ported heads. 200psi suggested cylinder pressure. Street/Strip for stroker engines.

Camshaft Technical Details
Intake Valve Lift 1.5
Exhaust Valve Lift 1.5    .576"
.593"
Intake Valve Lift 1.6
Exhaust Valve Lift 1.6    .614"
.632"
Intake Duration at .050"
Exhaust Duration at .050"    250°
255°
Lobe Separation Angle    108º
Intake Opening at .050"
Exhaust Opening at .050"    20° BTC
58.5° BBC
Intake Closing at .050"
Exhaust Closing at .050"    50° ABC
16.5° ATC
Min. Suggested Cylinder PSI    200
Sweet Spot RPM    2800 - 6000
LINK TO MY STORY http://www.onallcylinders.com/2015/11/16/ride-shares-charlie-keel-battles-cancer-ms-to-build-brilliant-1968-dodge-charger/  
                                                                                           
68 Charger 512 cid,9.7to1,Hilborn EFI,Home ported 440 source heads,small hyd roller cam,COLD A/C ,,a518 trans,Dana 60 ,4.10 gear,10.93 et,4100lbs on street tires full exhaust daily driver
Charger55 by Charlie Keel, on Flickr

mhinders

Thanks for the info.

Yes, the converter is old and not optimum, but I have to limit spending right now, but it's going to be replaced next year (winters are long here...I have to do something next winter as well ;)

Fuel is E85 so detonation is not a problem, I could have even higher compression.
Martin
Dodge Charger 1967, 512 cui, E85, MegaSquirt MS3X sequential ignition and injection