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Old 02-11-2013, 08:47 PM
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Carolina machine engines performance heads

Anybody had any experience with CAROLINA MACHINE ENGINES (CME)PERFORMANCE HEADS? Seems to be a reasonable price for a set of heads.
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Old 02-11-2013, 09:31 PM
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Good price for a CNC procomp head complete. $500 each. Not sure of the quality of their CNC, can't find any specs or flow charts.
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Old 02-11-2013, 09:49 PM
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what land shark said. you need numbers to do math.What are they claiming?
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Old 02-12-2013, 07:17 AM
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Waiting on a reply from CME. Is AFR that much better that they are worth all the extra money?
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Old 02-12-2013, 06:59 PM
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Quote:
Originally Posted by Landshark928 View Post
Good price for a CNC procomp head complete. $500 each. Not sure of the quality of their CNC, can't find any specs or flow charts.
We've done several Pro Comp heads they currently average this unported for the 190 cc intake with 2.02 inlet and 1.4 exhaust.

Lift Intake Flow Exhaust Flow
.1 68 54
.2 128 104
.3 178 136
.4 222 160
.5 249 171
.6 263 176


Bogie
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Old 02-12-2013, 07:15 PM
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AFR,are they worth it out of the box?

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Originally Posted by oldbogie View Post
We've done several Pro Comp heads they currently average this unported for the 190 cc intake with 2.02 inlet and 1.4 exhaust.

Lift Intake Flow Exhaust Flow
.1 68 54
.2 128 104
.3 178 136
.4 222 160
.5 249 171
.6 263 176


Bogie
afr advertises 260/207@.500 lifts with their 180 cc heads.If both sets of numbers are correct,you have to decide how much power you want and what you will spend to get it
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Old 02-13-2013, 09:56 AM
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afr advertises 260/207@.500 lifts with their 180 cc heads.If both sets of numbers are correct,you have to decide how much power you want and what you will spend to get it
I missed an error I made on the exhaust valve size of the ProComp 190 head which should be 1.6 inch not 1.4. Once again the Fickle Typing Finger of Fate proved to be faster than the eye let alone the brain.

You hit the raw nerve I left behind which is the end user needs to decide if the application, or desire, and the cost meet. The Pro Comp 190 makes a very good street performance head but the AFR 180 will have have it for lunch all other things being equal, not that they ever are.

Big thing I've come to appriicate about this head is that the intake works really well right out of the box! this will especially like a fast lift rate cam having a peak lift over .5 inch. It actally carries quite well up to .6 inch on the intake port before it shuts off. The exhaust isn't up to the par of the intake and is not sensitive to lifts above .5 inch. The message from the intake is that this head works really well with a big roller cam. The exhaust tells you that for max performance you need to use a split duration cam to buy more time for flow since the capacity isn't as high as desireable. This head ports up very nicely but the exhaust flow still lags. At .5 inch I've gotten 277/200 cfm ported, this tells you this is not the head to use with a blower or laughing gas as the exhaust just can't handle that much stuff going out. The intake flows comparable to the L31 up to about .3 inch then the PC pulls away, it tracks the Edlebrock E-170 pretty well up to .4 inch lift then pulls away. But the PC uses about 25cc more port volume than the L31 or E170 to do it. The PC 190 out of the box is more comparable to the GM Fastburn both in port size and flow although the flow on the intake side is a pretty consistent 5 to 7 percent lower depending on lift. The exhaust side flow is consistently higher than the L31 holding about 15 to 20 percent greater depending upon lift while ranging from 3 to 7% less than the Edlebrock E170. Compared to the Fastburn; the PC exhaust is the same through .4 inch lift, by .5 inch the Fastburn is better by about 6 percent.

Generally I've found the PC 190 to be a pretty good bang for only 500 bucks. A made in China part at a made in China price, while I'm not crazy about made in China parts, I really get cranked over when made in China stuff is sold at made in America prices! At least this isn't doing that.

Bogie

Last edited by oldbogie; 02-13-2013 at 10:23 AM.
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Old 02-13-2013, 10:07 AM
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Thanks Bogie, u've made up my mind. I'll be using a Weiand 6-71 so guess I'll go with the AFR product. I'm thinking the 210cc or 220cc ones for a street/strip 3750 lb car with 700R4 and 390 gears.
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