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Aftermarket camshaft?! $*#


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#1 Ipjkcu

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Posted 11 December 2017 - 09:20 PM

So why don't they mark regrind camshafts a little better. Farthest away is a stock hydraulic cam. The middle. I have drove with in a engine pushing  15psi safety. Seemed power didn't come on until 3500. Never did see how high it would Rev. Always shifted 55/58 the closest is unknown. But will be used in the motor u am rebuilding


https://youtu.be/1bm6EA31rFs







#2 speedyquest

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Posted 11 December 2017 - 09:23 PM

Are you asking how to tell what cam you have? I guess I'm not sure if you are stating a fact or asking a question and what that is.

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#3 Ipjkcu

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Posted 11 December 2017 - 10:39 PM

My apologies I've been sprain too much brake cleaner and carb cleaner in enclosed spaces. It's more of curiosity of anyone could shed any light or what markings there camshaft had from what shops

#4 Ipjkcu

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Posted 11 December 2017 - 10:40 PM

I hope this is the last g54b I tear apart. I think the next engine I will play with will be 3.5l ecoboost

Edited by Ipjkcu, 11 December 2017 - 10:43 PM.


#5 speedyquest

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Posted 11 December 2017 - 10:43 PM

Ah gotcha. Well your best place to look is on the end by the cam gear dowel pin. Most all performance cams for our motors were re-grinds so you aren't going to be able to determine much from their oem casting marks or even paint markings (they wouldn't have marked them in that way). If you see something stamped on the cam gear end that will help us help you.

1987 Flatty Starion -- Widebody Conversion -- V-Mount Setup --  JDL Tubular Manifold  --  MX-6 Intake -- MS3-Pro -- AEM FPR  --  ARP head studs -- 3" hood exit exhaust -- Hahn Racecraft 16g --  Tial F38 Wastegate -- Tial Q Bov -- Short route piping -- 5 lug & LSD conversion -- Tubular Front End -- Manual Steering Rack Conversion -- Manual Brake Conversion -- Stack Digital Dash -- AEM UEGO -- D2 coilovers -- full GNT poly bushings & mounts -- four 8" rears -- car lightened significantly...  More to come!


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Build Thread --->  http://www.starquest...opic=143564&hl=


#6 croquest87

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Posted 16 December 2017 - 12:02 AM

I put couple of diferent stock cams on CMM before and sweep measured each one for dimensions  just to see the diference  results where all the same on angles position of lobes and such only thing that was off from factory specs  is diameters on the cam lobes and or journals.   Regrind cams definetly result in less lift depending how much was removed causing loss of response and hp that's what larger valves are for to conpensate  or aftermarket custom cut cams  good luck identifying them by just marks or numbers

#7 jinx

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Posted 21 January 2018 - 11:44 PM

I'd think the regrind cam smaller base circle was to increase lift (& duration)
There was a very detailed thread years ago, where one meticulous starquestor measured all lobes on his regrind.
Went back and forth with schnieder cams, until they ground one 'properly' (to specs)
Gained ~100hp. An indication of the tremendous effect a cam can have on performance

#8 Woody

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Posted 30 January 2018 - 08:30 AM

Why was there never a run of these cams done? :(

Link?
www.sweetfrostings.com.au

#9 Woody

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Posted 30 January 2018 - 08:34 AM

Did anyone ever try CamTech cam?
http://www.camtechca..._4cyl_4g54.html
www.sweetfrostings.com.au

#10 jinx

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Posted 31 January 2018 - 01:30 PM

cam grind correction link here:
http://www.starquest...showtopic=97256

on the benefit of header comments.... Rank made 721 on a modified stock exhaust manifold. Finally switched to a header, and testified that the car drove like a totally different beast. Said he would be surprised if it wasn't making 850hp (vs the 721)




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