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Performer RPM head help

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Old Jan 29, 2004 | 02:16 AM
  #1  
XJOSHX's Avatar
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From: New Bedford Ma
Car: 1988 Iroc-Z
Engine: L98
Transmission: 700R4
Performer RPM head help

I am planning on getting Edelbrock performer RPM heads for the engine I am building. I want to run a Victor Junior intake with them. Are they a good match or should I look into the victor Jr. heads? I am also wondering what spec cam would go good with htis combo. I was looking at the edelbrock cam with these specs:

Adv. Duration: 308°/318°
Duration @ .050'': 234°/244°
Gross Lift: .488''/.510''
Lobe Sep.: 112°

My plans are to down the road run a centrifugal supercharger. Do you think this combo will work for that? I was thinking maybe get them same cam specs with a 114° lobe seperation. Any help guys?
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Old Jan 29, 2004 | 01:23 PM
  #2  
88IROC350TPI's Avatar
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Joined: May 2001
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From: Pitman, NJ
Car: '89 IROC-Z
Engine: Canfield 195 headed 358ci
Transmission: TH350, Art Carr 9.5"
Axle/Gears: 3.92 Dana 44
I'm not a huge fan of any of the Edelbrock heads. In the same price range you can buy better performing heads.

As for the combo, you should have no problem making some big power with a decent amount of boost and still be very streetable. You could look into some of Crane Cams blower grinds ...They have some very similar grinds on 114*
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Old Jan 29, 2004 | 01:34 PM
  #3  
SweetS10v8's Avatar
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From: Lima, OH
Car: '89 Formula 350 & '86 Z28
Engine: L98 & 355ci
Transmission: 700r4 in both
Re: Performer RPM head help

Originally posted by XJOSHX
I am planning on getting Edelbrock performer RPM heads for the engine I am building. I want to run a Victor Junior intake with them. Are they a good match or should I look into the victor Jr. heads? I am also wondering what spec cam would go good with htis combo. I was looking at the edelbrock cam with these specs:


Duration @ .050'': 234°/244°
Gross Lift: .488''/.510''
Lobe Sep.: 112°

My plans are to down the road run a centrifugal supercharger. Do you think this combo will work for that? I was thinking maybe get them same cam specs with a 114° lobe seperation. Any help guys?
What compression are you planning on running? If you plan to supercharge it then youll be running 8.5-9.0:1 which I would think that cam would be too big for at the moment. As well as the Victor Jr intake, with that low of compression I would go for something like the RPM airgapand and a ~220-225 dur @.050 cam.

If you are buying new I would go with a different brand heads. But if your buying used, edelbrocks can be picked up for $500 or so easily. I am biased to AFR heads as are most, the 195s I had were OUTSTANDING! They are about the same as Victor Jr heads anyways You can get them here for $1251 with free shipping

Your compression is the kicker here, Cams are cheap. Get one to match your current setup and then when it comes time to add forced induction, do a cam swap at the same time. You will be happy 100% of the time this way.
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