jim mock cams

[Walkinshaw]

Originally Posted by heckaz performance

Regrinds are a bit lame, especially for those bucks, many cams would do the job, dont forget that the mock car has head mods. ed head is supposed to have bigger ports than later on and flow 380hp. Many cam manufacturers have a cam that will get you into the 13's, especially with all the no expense spared, engine, driveline and suspension of the Mock-vehicle. It does not suit street use and apparently has driveline vibrations at 80k's due to a pinion angle modification. If anyone wanted to waste their vehicle drivability I'm sure they could challenge them.
Durations around 230@0.50" would give em a run.

Stock heads DO NOT flow 380bhp.

Speaking of 230@0.050, i have one on the way

[STOKEB]

EVLELF how much have you spent on your motor?? I bet way more then i have..

[1TUFFUTE]

whats the diff between regrind and billet,in performance and reliability i mean...i thought a chunk of metal was a chunk of metal?????? :

[OED666]

if i could have got a regrind cam for my au motor i would have...

HP is the same if its regrind or billet...

[FPVWEPN]

230 degree duration @ 0.500 lift??
hows that compare to a dev 5 cam??

[MADED-6]

i no u will get the same power with both billet and regrind but wat i am saying is they would pay like max $50 for a cam regrind it and sell it for nearly $500. and a billet is a freshly made cam for like $420 so that is a good price i think jmm charge way to much for there stuff in my opinion. but then again if ppl are goin to pay it i would charge it too.

[EFFalcon]

Originally Posted by FPVWEPN

230 degree duration @ 0.500 lift??
hows that compare to a dev 5 cam??

can't really say, we don't know the specs of the JMM dev5

[EB Pete]

how do you work out the duration at lift? i got the specs on a crow and it says intake is 272@0.500" and exhast at 269@0.485". is that right?

[heckaz performance]

: Yeah its sort of right, but its best to talk .050 durations not advertised. The cam your talking about is 209@.050" intake and 207@.050"exhaust.

As for the head flow figure I have been quoting its at .550lift as thats how much lift the Guy was going to use. So you do know that its generally 320-340 for an early model head at .500lift and still argue about a few hp at more lift?

I guess by your genius logic we could all run half the lift and flow the same. You are the bloke that had 0.600" on his avatar right? So you know perfectly well the benifits of higher lift for flow. Why play dumb and discount a flow figure with no question to what lift was used?

I can be a ***** too :

[EB Pete]

if your talking about me, my lift is only at 0.500' not 0.550' and according to crow that 209 and 207 is at 0.075' dduration. well i think thats what it means. have a look.

http://www.crowcams.com.au/templates...A-AU-OHC.shtml

cam part number is 2222543

[Walkinshaw]

Originally Posted by heckaz performance

I guess by your genius logic we could all run half the lift and flow the same. You are the bloke that had 0.600" on his avatar right? So you know perfectly well the benifits of higher lift for flow. Why play dumb and discount a flow figure with no question to what lift was used?

That was me. FAR more behind that avitar than you know.

Higher lift helps high flowing heads. Most ported 4.0L heads make great flow (370bhp+) at 450thou lift and do not increase considerably over this lift. The benifit of high lift is to provide more lift over a greater duration. This can often be done easier by keeping the same lift and pumping out the duration.

[MADED-6]

hey ebpete is that cam good and how much was it it looks alright and do u need engine work or something.

[MADED-6]

i mean like head work otherwise it is just to big. i want bigger cam and i have a chip now so i want something other than the dev cams because they are to expensive and they are regrinds so i would like something that will make similar power and be a billet cam.

[EB Pete]

um well not sure about how it goes cause i'm getting the whole engine rebuilt and gear box. i get a really good discount at repco (got acl race series 9.6:1 pistons for $380 compared to $790) so don't know the real price but i'm paying $340 for the cam, $66 for the xr6 springs and $110 for the vernier gear. i'm getting it cause it's got a wide rev range and it's a billert cam. i'de say for good performance out of it you'd need extracters, cai and and a chip for sure, but thats just me. for real good performance get the head worked but i guess it depends on who you talk to seeing as heckaz says they flow good standard. but we will see when he posts the figures on when i get the before and after flow figures at 0.500' lift.

[MADED-6]

yeah i might get a price for one through bursons or something from work and might get one of them sounds good i got all the stuff except head wrok which i will get maybe one day. cheers josh.

[EB Pete]

if ya get it tell me how it goes.

[neil101]

94EDghia give this guy a call his name is jason 0401012859 he has a stage 2 cam that is really torquey and perfectly suited to a unported head you will need extractors and full exhaust though and heavier valve springs tell him I sent you.

Neil

[MADED-6]

alright thanx mate.

[Laminge]

Originally Posted by heckaz performance

I can be a ***** too :

Sorry that title belongs to me, so lets keep it civil

[vegabass]

I have been reading on and off in this thread..
I have a DEV2 and im making very good power and the best time i have done on the 14 mile is 15 flat with axle tramp

60 ft 2.29
speed at 150
it was about 30deg with 88% humidity and i drove over 2hrs to the track


Ill be getting JMM to do more work in the future. I dont mind paying the coin as i know it works and its reliable.