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  #31 (permalink)  
Old 12-20-2012, 12:53 AM
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Quote:
Originally Posted by bygddy View Post
a .028 head gasket
Talk to the mfg before you use a thin gasket with aluminum heads. The default aluminum head gasket is Fel-Pro 1003 with pre-flattened wire ring to minimize brinelling of the aluminum.
http://www.jegs.com/i/Fel-Pro/375/1003/10002/-1

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  #32 (permalink)  
Old 12-20-2012, 05:17 AM
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Originally Posted by techinspector1 View Post
Talk to the mfg before you use a thin gasket with aluminum heads. The default aluminum head gasket is Fel-Pro 1003 with pre-flattened wire ring to minimize brinelling of the aluminum.
Fel Pro 1003 Fel-Pro Wire Ring Cylinder Head Gaskets
Ahhhh.....I didn't actualy even think about the alum heads having an issue with a thin gasket.....so will forget that and stick with the plan....and after you mapped out my comp. I'm not as concerned with finding a 70+CC head now anyways....thanks!
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  #33 (permalink)  
Old 12-20-2012, 05:19 AM
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Originally Posted by Plaintoast View Post
you won't get anywhere near 500 with those heads and cam, sorry to break the news to you.
if you want to get closer, step up to a set of afr 195cc heads and go a little more intake duration.
I keep forgetting the "500hp AFR Exclusivity" clause in engine building.....I'm an idiot and will call them today......thanks
Dave
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Old 12-20-2012, 07:38 AM
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looks like a 383

If you are going thru all the expense to get 500 hp you need to get a 27-10.50 tire to make the rear gear you have work. I think to get an actual 4.56 gear ratio it is based on a 26" tall tire. It is cheaper to change tire size than gear size unless installing yourself.
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Old 12-20-2012, 08:48 AM
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Originally Posted by cdminter59 View Post
If you are going thru all the expense to get 500 hp you need to get a 27-10.50 tire to make the rear gear you have work. I think to get an actual 4.56 gear ratio it is based on a 26" tall tire. It is cheaper to change tire size than gear size unless installing yourself.
Its a Pro street street rod, and therefore by design its going to be a big tired poser car, that a small tire would make look fairly ridiculous unfortunately....lol. for gear, I'm simply comprimising to have some highway cruising ability in a pinch....456 puts me at 3000 at 100kph, which is about where I want to be....as the gear in the car currently is somewhere in the 350-370 range I should be happy with the jump to a 456..
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  #36 (permalink)  
Old 12-20-2012, 10:37 AM
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Originally Posted by bygddy View Post
I keep forgetting the "500hp AFR Exclusivity" clause in engine building.....I'm an idiot and will call them today......thanks
Dave
noits not that, a brodix or other higher end head could get you there too, its just all about flow.
we've built 383s with the listed heads, pump gas, and hit that magic number on a real dyno, not a simulator. there is nothing wrong with dart heads, we sell and like them too, but they just won't get the job done in this case. if its about posing, fine, throw a thumper cam in there too and have fun. if its a 500hp goal, the combo osnt quite there yet.
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  #37 (permalink)  
Old 12-20-2012, 01:08 PM
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Originally Posted by Plaintoast View Post
noits not that, a brodix or other higher end head could get you there too, its just all about flow.
we've built 383s with the listed heads, pump gas, and hit that magic number on a real dyno, not a simulator. there is nothing wrong with dart heads, we sell and like them too, but they just won't get the job done in this case. if its about posing, fine, throw a thumper cam in there too and have fun. if its a 500hp goal, the combo osnt quite there yet.
Then dart heads were going to get some work done, but I was quoted 1140 for the Brodix IK200's today so that's likely where I will go......no, not about posing at all....I get that 12's on a 18.5 tire is a little poserish lol.....but there's only so much I can do....
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  #38 (permalink)  
Old 12-20-2012, 03:50 PM
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Quote:
Originally Posted by bygddy View Post
Then dart heads were going to get some work done, but I was quoted 1140 for the Brodix IK200's today so that's likely where I will go......no, not about posing at all....I get that 12's on a 18.5 tire is a little poserish lol.....but there's only so much I can do....
That price is from your Canadian source? Thats not bad.
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  #39 (permalink)  
Old 12-20-2012, 03:59 PM
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I have a recommendation for you that people often overlook on assembled heads.
When you get them take them apart and clean them. blow out all passages with compressed air. Scrub them, in hot soapy water especially the valve guides.
When you reassemble, oil the now clean valve stems/guides generously with motor oil.

This is for all new aftermarket cylinder heads.
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Old 12-20-2012, 04:05 PM
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Originally Posted by F-BIRD'88 View Post
That price is from your Canadian source? Thats not bad.
Yah, assuming he is legit. Will find out in a few weeks...
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Old 12-20-2012, 04:06 PM
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Quote:
Originally Posted by F-BIRD'88 View Post
I have a recommendation for you that people often overlook on assembled heads.
When you get them take them apart and clean them. blow out all passages with compressed air. Scrub them, in hot soapy water especially the valve guides.
When you reassemble, oil the now clean valve stems/guides generously with motor oil.

This is for all new aftermarket cylinder heads.
That's fairly straightfowrd advice and I will for sure...thnks
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  #42 (permalink)  
Old 12-20-2012, 04:07 PM
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Before I order rockers is there enough, or any gain to warrant a 1.6 over a 1.5 rocker?
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  #43 (permalink)  
Old 12-20-2012, 04:24 PM
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Originally Posted by bygddy View Post
Before I order rockers is there enough, or any gain to warrant a 1.6 over a 1.5 rocker?
With the brodix heads ya go for it.
I use and like the Summit house brand (Scorpion)
eg sum-G6905 /6 (3/8" rocker stud)

Howards are the same as far as I can tell..

www.scorpionperformance.com

They make a lot of stuff, for a lot of companies.

If you want the ones that say Scorpion or Howards on them they are just a few bucks more.
I like the purple Howards ones.

I like these roller rockers cause the run quiet and last and last and last.

be sure you order the right chamber volume and spring package on your heads.

If using a 64cc head on a 383 use a -12cc dished 383 piston
(based on a 0 deck height and .041" gasket.)

many people get this wrong when building a 383.

Last edited by F-BIRD'88; 12-20-2012 at 04:41 PM.
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  #44 (permalink)  
Old 12-20-2012, 05:12 PM
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Originally Posted by F-BIRD'88 View Post
With the brodix heads ya go for it.
I use and like the Summit house brand (Scorpion)
eg sum-G6905 /6 (3/8" rocker stud)

Howards are the same as far as I can tell..

Welcome to Scorpion Performance

They make a lot of stuff, for a lot of companies.

If you want the ones that say Scorpion or Howards on them they are just a few bucks more.
I like the purple Howards ones.

I like these roller rockers cause the run quiet and last and last and last.

be sure you order the right chamber volume and spring package on your heads.

If using a 64cc head on a 383 use a -12cc dished 383 piston
(based on a 0 deck height and .041" gasket.)

many people get this wrong when building a 383.
Pistons are 5cc, deck height will be. 010 in, with a felpro 1003....I have a unmolested 010 block if it turns out mine has been machined previously....with proper tune and 94 I hope to be OK....if you run the math that tech laid out previously it should be 10.7 static and 8.82 dcr and I trust his math. I never looked further into the eagle stroker kit so I'm not sure if a piston option is avail or not. I assumed it was a standard budget kit and having piston choice wasn't avail. Quench is a little large at 0.051 but with efficient heads, and 94 and the right timing and tune I suspect it will be fine. And hopefully turn my stupid expensive overly large tires into stupid expensive little tiny chunks of rubber at will!
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  #45 (permalink)  
Old 12-20-2012, 05:24 PM
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You are going on faith based on unsound advise and inaccurate data.

If you are using a 64cc head build it with a dished piston.
If you want a flat top 383 piston use a 70cc head on it.

You do not want to run it right on the edge. Don;t get all nuts on the cr.
An it don't matter what cam you stuff in it.

The trouble is you are only shopping price on the 383 kits.
The flat top piston kit is cheaper for a reason.
Its a bad choice for a 383 with 64cc heads on pump gas.

if you want a 64cc head get the kit with the -12cc dished pistons

tech math and advice is always wrong.

There is no benefit to trying to ride the edge of the compression limit.
Do not get all nuts on compression or try to max it out.
10.5:1 is MORE THAN ENOUGH.

Last edited by F-BIRD'88; 12-20-2012 at 05:34 PM.
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