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Author Topic: best aspirated cam????  (Read 10844 times)
stussyrich
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« on: July 15, 2012, 22:27:24 pm »

Ok guys whats your opinions on the best cam for an aspirated motor.

some specs.

2387
scat case with centre thrust.
86 scat flange crank
5.5 rods
wiseco teflon coated pistons with valve pockets.
tool steel lifters
ultra wedgeport heads 47x38 titanium valves Ls1 springs 33cc chambers.
berg 1.4 rockers
51.5 italians
berg 1" 7/8 stepped header
around 13.5 compression..
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Lil Stink Hound.. 2332 IDA. 11.78 @ 112mph.

Turbo Notch.. 2332 Turbo 10.2 @ 137mph.
Erlend / bug66
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« Reply #1 on: July 15, 2012, 22:34:48 pm »

Ask JPM!

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The '67:
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10.407 @ 134mph, SCC 2017
10.221 @ 135mph, SCC 2018

The '59:
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dannyboy
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« Reply #2 on: July 15, 2012, 22:39:49 pm »

/\/\/\/\/\/\ thats where my next cam will come from only heard good things  Cool
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richie
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« Reply #3 on: July 16, 2012, 08:48:45 am »

FK48 on 108 lobe centers or FK89 for less maintenance on valve train

cheers richie
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jamiep_jamiep
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« Reply #4 on: July 16, 2012, 15:55:29 pm »

I'd stick a 110 in there rich Smiley hahaha

how else am I going to get in front of you?!

 Grin
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Fast Bug
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« Reply #5 on: July 16, 2012, 19:13:23 pm »

JPM Raptor and alu pushrods Wink
« Last Edit: July 16, 2012, 19:17:42 pm by Fast Bug » Logged
JS
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« Reply #6 on: July 17, 2012, 22:46:41 pm »

Ask JPM!



Nope, he would get the correct answer - not an opinion.
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Erlend / bug66
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« Reply #7 on: July 17, 2012, 22:54:37 pm »

My opinion is to ask JPM  Wink
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The '67:
10.626 @ 132mph, SCC 2016
10.407 @ 134mph, SCC 2017
10.221 @ 135mph, SCC 2018

The '59:
Not yet..
stussyrich
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« Reply #8 on: July 17, 2012, 23:48:19 pm »

this was a suggestion..  custom grind   .613 lift 320 duration on a 105 lobe center..
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Lil Stink Hound.. 2332 IDA. 11.78 @ 112mph.

Turbo Notch.. 2332 Turbo 10.2 @ 137mph.
Zach Gomulka
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Don't piss down my back and tell me it's raining.


« Reply #9 on: July 18, 2012, 02:57:07 am »

I was under the impression that the 86c was the next best thing behind the Raptor cams?
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SuperTrigger
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« Reply #10 on: July 18, 2012, 10:42:08 am »

FK46. Smiley

Almost same engine that you have exept lower compression (11.x:1) and 44 intake valves it made 195whp@6700rpm and 230NM (234hp/266Nm at engine).

-Puide-
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Jon
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« Reply #11 on: July 18, 2012, 13:31:32 pm »

I was under the impression that the 86c was the next best thing behind the Raptor cams?

Whats "best"? ...more power or long life/silent valve train?  Many cams are designed the modern way, but usually the power is lacking...  JPM's cams have both...
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stussyrich
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« Reply #12 on: July 18, 2012, 13:56:53 pm »

should have said it's for drag only so not bothered about long life or quiet valve train.
The lifter bores have bronze bushings and i'll be using tool steel lifters..
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Lil Stink Hound.. 2332 IDA. 11.78 @ 112mph.

Turbo Notch.. 2332 Turbo 10.2 @ 137mph.
TexasTom
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12.58@106, 7.89@89 Texas Motorplex 10/18/09


« Reply #13 on: July 18, 2012, 14:50:52 pm »

JPM Raptor and alu pushrods Wink

Don't forget SINGLE springs!  Wink
TxT
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Torben Alstrup
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« Reply #14 on: July 18, 2012, 18:20:22 pm »

I was under the impression that the 86c was the next best thing behind the Raptor cams?
The 86C is a killer cam. But in an engine like that with 13+ - 1 CR better choices can be made. You dont build an engine like that an want to drive it on the street much...

IŽd also say FK89 or the new 2290 (I think) from CB. if you are ready to step up to a Ratptor, that would most likely give you most HP, and definitely the lesser need for valve spring tension.
T
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Zach Gomulka
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« Reply #15 on: July 19, 2012, 02:02:53 am »

Thanks for the clarification, Torben. I've got a 2332 longblock that I hope to stab that cam in someday...
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Born in the '80s, stuck in the '70s.
Shag55
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« Reply #16 on: July 19, 2012, 04:12:16 am »

   
Re: best aspirated cam
I have a xr328 on a 106 and TP tool steel lifters. It was made for a Super Stock motor. It was on a 106 to help get out of the hole with such a big cam on a smaller motor. 240-250hp.
With a big motor say 280 really no need for a tight lobe center.
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325hp and 290# torque @17psi on 91 pump
383hp and 324# torque @23psi on 50/50 mix
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« Reply #17 on: August 07, 2012, 22:39:00 pm »

I had an 86C then went to the dark side and now have JPM
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Frallan
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« Reply #18 on: August 08, 2012, 01:40:35 am »

I had an 86C then went to the dark side and now have JPM

Me too. ...and single springs from Crower.
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bedjo78
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« Reply #19 on: August 08, 2012, 03:14:34 am »

in tropical weather fk47 with 1:5 rocker  worked well.
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BeetleBug
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« Reply #20 on: August 08, 2012, 07:37:09 am »

in tropical weather fk47 with 1:5 rocker  worked well.

Did you ask your engine case?
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10.41 - 100ci - 1641ccm - 400hp
Erlend / bug66
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« Reply #21 on: August 08, 2012, 07:45:30 am »

in tropical weather fk47 with 1:5 rocker  worked well.

Did you ask your engine case?

 Cheesy

I've seen a engine block with a split-cam with FK4x on the lobes.. Lifter bores did not look to happy
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The '67:
10.626 @ 132mph, SCC 2016
10.407 @ 134mph, SCC 2017
10.221 @ 135mph, SCC 2018

The '59:
Not yet..
Jon
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12,3@174km/t at Gardermoen 2008


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« Reply #22 on: August 08, 2012, 08:00:51 am »

I had an 86C then went to the dark side and now have JPM

I think you mean you stepped out of the dark ages.
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bedjo78
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« Reply #23 on: August 08, 2012, 08:29:51 am »

in tropical weather fk47 with 1:5 rocker  worked well.

Did you ask your engine case?

 Cheesy

I've seen a engine block with a split-cam with FK4x on the lobes.. Lifter bores did not look to happy


the lifter bores sleeved . the power come early and pull strong up 7500 rpm
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BeetleBug
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Snabba grabben...


« Reply #24 on: August 08, 2012, 10:34:15 am »


the lifter bores sleeved . the power come early and pull strong up 7500 rpm

I know, I used one myselves in a alu case but luckily I got it out before it did any damages.
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10.41 - 100ci - 1641ccm - 400hp
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