18 Degree Intake vs 23 Degree

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Old 10-08-2010, 05:53 AM
  #11  
curtisreed
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Headers, and pistons are different.
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Old 10-08-2010, 06:06 AM
  #12  
jreiley
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Pistons I wasn't aware of. Can the flanges the header's are welded to be changed to give the correct angle, or just buy new ones? What about the valve train?
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Old 10-08-2010, 06:34 AM
  #13  
ccperf721p
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Valve train will need to be a shaft setup with offset lifters, custom length pushrods.

What will need to be done to the headers depends on the heads you choose. A spreadport exhaust will need the middle tubes positioned a little farther away from each other. Different flanges can be welded on.
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Old 10-08-2010, 06:37 AM
  #14  
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ccperf721p,
You beat me too it, we must have been typing at the same time,
Shaft rockers are also different some take .250 offset intake rockers, requiring a .180 or .200 offset intake roller lifters. I've got a set of Brodix 10's RP,FP's 23* spredports that take the .250 offset rockers and lifters. I bought the T&D rocker from Randy Roberts with the mud truck, that he had on his 18* heads. I'm not sure that all 18* heads require the use of offset lifters. I think this engine will make about 750 HP with injection on alcohol.
I've got a set of Lemon 2"X2 1/8" with 4" collectors that are Malibu specific, but they weren't cheap by any means.

JMO

Zip.
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Old 10-08-2010, 08:20 AM
  #15  
jreiley
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I've looked at Lemon headers, and your right, they are not cheap. The car all this is going into is a 85 Camaro.
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Old 10-08-2010, 09:31 AM
  #16  
JEFF69Z28
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Originally Posted by jreiley
I've looked at Lemon headers, and your right, they are not cheap. The car all this is going into is a 85 Camaro.
HIS HATS ARE EXSPENSIVE..I BROUGHT ONE FOR 1600 DOLLARS AND HE GAVE ME THE HEADERS FREE....LOL
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Old 10-08-2010, 10:08 AM
  #17  
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I could not afford those prices, but i really lucked out. There was police officer in Lansing Mi. who parterned with another person, his motor the officers car. The headers were never ran but installed. They parted company and the cop had them on RJ for $400.00, i got in contact with him and says hey i just put them on Ebay, starting bid $350.00. had 8 egt bungs, all the whisles and bells.
I was the only bidder, because they were made for a 1980 Malibu same as my car, one of the best deals i ever got in my life. He sent me the original bill from Lemons and it said $1350.00, plus bungs.

Zip.
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Old 10-08-2010, 03:31 PM
  #18  
wmeabates
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Jreiley,I have an 18 deg. head motor in a 83 camaro,same as your 85.I have edelbrock victor 18 heads,lemons headers 2 in. pipe 3.5 col.t&d rockers .550 intake .170 exhaust offsets,.180 offset lifters,18 deg. pistons. Stock body with a cage,stock type suspension,10 in.slick.Best-1.36 60,6.15 112 1/8 9.67 140 1/4.Street legal antique plate car.Good luck with yours.Bill Bates.
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Old 10-09-2010, 04:49 AM
  #19  
jreiley
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Hope mine will run as well as yours. Thanks............
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Old 10-10-2010, 04:16 PM
  #20  
cncmotorsports
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Originally Posted by zipper06
Originally Posted by cncmotorsports
Originally Posted by jreiley
Don't the 12,15 and 18 degree heads use the same intake and exhaust.
12, 15 and 18 degree take the same intake
700 HP is easy with either 23 degree or 18 degree
I respectfully disagree, it's not easy to make 700 HP with 23* heads without spending a ton of money. (why don't you tell us how much you get for a 23* head motor making 700 HP guarenteed/dyno'ed. without additaves/nitrous) Exceptionly/good 23* heads flow maybe 340 CFM. Good 18* heads flow 400 CFM plus, with a 434" it's possible to make 800HP plus with 18* heads for less than $10,000.00 without additaves,
Carb to pan.

JMO

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Here is our 427, 759 HP
http://www.cnc-motorsports.com/produ...25&CtgID=29564

I will agree 18 degree will make more power, but unless you plan on buying used parts, $10,000 is a tight budget carb to pan.

Just saying 23 degree heads can make 700 plus horsepower.
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