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Pro Comp Aluminum Head

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Old 04-11-2007, 07:30 AM   #1
BlessedHellride
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Default Pro Comp Aluminum Head

I have been watching several auctions on ebay on those Pro Comp Aluminum heads. Can they be bolted on with the smaller 302 studs even if they have 1/2" mounting holes. I read something about some kind of spacer or sleeve for the studs. And also, does anyone know what kind of headers bolts up to them. I guess what I am asking is can I just get a set of long tubes for a regular 302 head. I had 1 3/4" long tube macs on my last fox body. they performed like a ****, but were such a great pain in my butt if any maintnance was needed to be done, like pull the starter meant pulling the engine half way outta the car to get it in and out. Think I'm gonna go with 1 5/8" this time. What do ya'll think? I haven't been able to find any good literature online about them and there aren't any guys around my house running a pair of them. Is there anyone here that runs a set, if so what size are you running?
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Old 04-11-2007, 01:00 PM   #2
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Default RE: Pro Comp Aluminum Head

Bump, Anyone know anything about these heads?
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Old 04-11-2007, 01:03 PM   #3
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Default RE: Pro Comp Aluminum Head

yes there is a 7/16" to 1/2" bushing reduceryou use.

as far as ythose specific heads i know nothing about them.

intake valve size should be 1.9, if they are 2.02 you need to watch cam lift and may need to notch your pistons

all i can think of to be concerned with

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Old 04-11-2007, 01:05 PM   #4
5IVE.OH
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Default RE: Pro Comp Aluminum Head

Read this and then decide if it's what you want to do or not.

http://www.fordmuscle.com/archives/2...EditorsCorner/
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Old 04-11-2007, 01:05 PM   #5
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Default RE: Pro Comp Aluminum Head

dont know that much about them. but i did buy a set and when i got them they casting wasnt that great. there was need for alot of hand work. when they were doing the valve job they went in to far and put a lip/step in it. so you would have to take that down buy hand so your flow doesnt get screwed up
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Old 04-11-2007, 01:17 PM   #6
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Default RE: Pro Comp Aluminum Head

heard nothing good about the Pro-comp crap

recommend RHS, mo better.

APR sells bolts with tapered ends to mount 351 style heads on a 302.
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Old 04-11-2007, 01:19 PM   #7
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Default RE: Pro Comp Aluminum Head

yeah i sent the pro comps back and got RHS. or go with TFS they are really good and they have the best prices i think
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Old 04-11-2007, 01:44 PM   #8
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Default RE: Pro Comp Aluminum Head

Am I ever glad I asked that question. Thanks for the heads up on those Pro Comp heads. What are the RHS heads, don't know if I have heard of RHS before.
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Old 04-11-2007, 02:36 PM   #9
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Default RE: Pro Comp Aluminum Head

Racing Head Services. Its by comp cams. Here you go.
http://www.racingheadservice.com
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Old 04-11-2007, 02:54 PM   #10
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Default RE: Pro Comp Aluminum Head

They are proud of dem things. Man alive, I think I'll wait for my new catalogs and mags to come in da mail and look threw them for some heads.
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Old 04-11-2007, 03:02 PM   #11
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Default RE: Pro Comp Aluminum Head

just got these myself, complete with upgraded springs for big lift cams
http://cgi.ebay.com/ebaymotors/Musta...spagenameZWD1V
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Old 04-12-2007, 06:57 PM   #12
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Default RE: Pro Comp Aluminum Head

I just got back from one of the local machine shops that does mostly high performance work for our area. He had nothing bad to say about Pro Comp heads. He even had a set of BBC Pro Comp Aluminum heads still in the box in his assembly room. They looked good to me. He did mention about having tofly-cut the pistons for clearance on the 2.02 valves and such.

He also told me some unruly things he has experianced with DARTheads. Wasn't very comforting. Probably 6 different stories all involving DART heads. All involving the way they had machined the valve seats and the valve guides being misalligned. He said that DART wouldn't talk to him about it, that he had to talk to the distributor he got them from. He then said his distributor told him "to just send them back and he would throw them in the pile with the others and send him a new set."
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88 Notch 347, C4 w/brake, 3K stall, Alum. drive shaft, 3.90 gear 8.8"
Best N/A E.T.- 11.19 @ 122mph. Best 60' - 1.67
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Old 04-12-2007, 07:14 PM   #13
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Default RE: Pro Comp Aluminum Head

listen as long as you have your dowl pins in your block all you need to do is bolt them in and make sure you use gasket sealant on the bottom head bolts during installation if you are using stock pistons on a 87 or newer ho block and plan on any cam bigger than stock than you will have to flycut 50ths off your pistons because yhey are 2.02 valves and they will hit but over all they are a good head and i can attest i have them on a 306 and they flow awsome out of the box and you can buy them complete for 800 bucks with dual valve springs
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Old 04-12-2007, 07:21 PM   #14
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Default RE: Pro Comp Aluminum Head

Quote:
ORIGINAL: hunter5.0

listen as long as you have your dowl pins in your block all you need to do is bolt them in and make sure you use gasket sealant on the bottom head bolts during installation if you are using stock pistons on a 87 or newer ho block and plan on any cam bigger than stock than you will have to flycut 50ths off your pistons because yhey are 2.02 valves and they will hit but over all they are a good head and i can attest i have them on a 306 and they flow awsome out of the box and you can buy them complete for 800 bucks with dual valve springs
which are you talking about the pro comps or RHS
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Old 04-12-2007, 07:26 PM   #15
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Default RE: Pro Comp Aluminum Head

pro comps 351/302 head
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Old 04-12-2007, 07:28 PM   #16
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Default RE: Pro Comp Aluminum Head

maybe i just got a bad set. its the luck of the draw i guess
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Old 04-12-2007, 10:14 PM   #17
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Default RE: Pro Comp Aluminum Head

The guy at the machine shop in town told me to make sure I bought the ones with the dual springs. He also pointed out the deal about flycutting the pistons. I think he told me he could get it done for about $80. I am thinking of purchasing one of the budget stroker kits,331CID, from the mustang depot(ebay). You can get them for $589. For what I want to do, they will probably work fine. Beings as all I have heard was that I'd break the stock block before I'd break a cast steel crank running a stroker set up.
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Old 04-12-2007, 10:20 PM   #18
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Default RE: Pro Comp Aluminum Head

ask full auto about thos pro comp headshe USEDto sell them.... he said they have very bad quality control issues buyer beware i would stay clear... if that guy sells procomp he isn't going to tell you they are junk now is he??? i have heard nothing but bad about them
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Old 04-12-2007, 10:27 PM   #19
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Default RE: Pro Comp Aluminum Head

The guy I'm talking to has nothing to do with sellingthem or anything to do with Pro Comp. His shop is just where everyone from our area brings their hot rod parts for machine work. He told me he has seen quite a few different sets from sreet/strip cars to nasty super latemodel dirt track cars. And beleive me when I say I have no doubt about everyones replies about having trouble with them.
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Old 04-12-2007, 10:36 PM   #20
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Default RE: Pro Comp Aluminum Head

hmmmmm i know many people using pro1's and have not heard a problem yet??? mine are great!
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BBK 70 MM throttle body
Edelbrock preformer RPM heads
Walbro 255lph High Pressure Fuel Pump
Ford Racing 47lb Injectors (EV6)
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MSD pro billet / MSD 6AL
Converted to mass air
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Old 04-12-2007, 10:36 PM
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