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machining heads


Guest Eurolumina92

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Guest Eurolumina92

has any one ever had the heads done and is it worth the money im gooing to pay or is ther a way i could do it

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all and any feed back would be helpful

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Unless you plan on running some boost, it's really not worth it. You could port and polish the heads yourself, just gasket match them. I wouldn't even do a 3 or 5 angle valve job though, waste of time, unless you plan on running boost. If you had it done, plan on spending big bucks.

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What do you mean by machining? Just decking them? If you have the heads off, it is a good idea to have them decked and cleaned. A valve job is not a waste of time, as it ensures the valves will seat fully, and increase flow/quality of flow past the valve and valve seat. A 3 angle valve job should be cheap, at least it is here.

 

As for "just gaske match them", that would be a really stupid thing to do on the exhaust side. You wont see much power increase at all from merely gasket matching the intake side of the heads.

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I spent $220 for the labor , and about $439 in parts.

Stainless steel valves and all proformance rods,proformance keepers, roller rocker arms, retainers, 3 angle valve job.

 

I have not installed them, so I can't tell you that it was a huge help, but I am positive this is a huge gain.

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Performance keepers? The only thing you mentioned that will increase performance is the 3 angle valve job. Lighter valves will help some, mostly at allowing higher RPM operation. Performance rods have nothing to do with heads though so you lost me there.

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I just gave em the parts (my NAPA guy) , they put them together for me, I just included the cost (that I paid) for the whole deal.

 

Sorry if I confused anyone....

 

I had purchased then entire "performance head kit" from ARI. Thats why I listed the parts the way I did....

 

Oh and the spings are much stronger...that will help

lighter valves like you mentioned

roller rocker arms will add a bit (comp cams claims up to 20 hp)

the three angle valve job will help (unless your heads have 0 buildup in them, like thats possible after any sort of serious milage)

 

ARI lists this stuff as:

PERFORMANCE HEAD PARTS KIT

Includes: Performance Stainless Steel Valves, Performance Valve Springs, Performance Retainers, and Performance Keepers. The Same Parts we use in our Performance Cylinder Heads!!!

Performance Push Rod Set - GMV6-PR1-$84.95

Stock Push Rod Set - GMV6-PR2 - - $36.95

 

The only thing I didn't flip for was the port & polish.

 

Once again I'm sorry I lumped the valvetrain shit in there to, that was just the cost for me to get back my heads. The 3 angle valve job was $150. I think it was cheaper cause of all the crap I had done.

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Stronger springs = less power if you dont need them. More resistance against the crank by having to push against stronger springs. 3 angloe valve job is 50 bucks here, ARI raped you. If you didnt get the P&P, your not gonna see any gains really. 20 hp on roller rockers, in a fantasy world. Even if they are 1.6 ratio you are looking at less than 5 hp (maybe 1 hp if they are 1.52:1).

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I agree withyou about the claims that most manufactures stamp on some of the parts, I tend to expect about half of the claim. If I am able to produce more than that, bonus.

 

All of the parts I went with were based of off a TGP engine. So i think I do need the stronger springs.

The 3 angle valve job may be $50 bucks by you , but when I was calling around , EVERYPLACE I called wanted 200-300. I didn't have ARI do the valve job , they just spplied me with parts , I have the valve job done locally.

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Yep. But I'm not going nuts with it or anything, the OEM t-25 is fine. It's my daily driving car. I had for a long time wanted to drop this engine in the my Fiero , but Ihave found a more suitable engine for that , so I am going to drop the 3.1 Turbo , into the Cutlass (which was my original game plane anyway).

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