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What's wrong with AFR's exhaust port?

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Old 02-27-2015 | 05:51 PM
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Originally Posted by SB
Smitty is a good example, because he had other heads before (Merlin's) and couldn't make anywhere near the power he was looking for, even turning up the boost. He got the AFR's and surpassed the power he was looking for even with boost he was more comfortable with.

BObL ran into this also. Too much boost for the power (some box stock basic Brodix) and more boost wasn't doing anything. I think BobL ended up going to a set of Ported Brodix's or etc and made his number with acceptable boost #'s.

Many more example's, but these where chosen because of being members here, to agree with MildT and many others. Adding more boost is not always the answer - ie: doesn't always make more power if the combo of parts is not there to support the added airflow.
Also can be a factor when you run out of blower, or camshaft as well. You get to the point of diminishing returns. Sometimes you simply have to make more power on "motor'', if you are compressor limited. Like trying to make 1000HP with a 177 blower on a 454. Not gonna happen. But it can happen with a big blower and alot of boost. today, builders are doing 2000HP with conventional heads and turbos and centrifugals.
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Old 02-27-2015 | 06:48 PM
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Definately not with schitty or just okay conventional heads.
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Old 02-27-2015 | 07:10 PM
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Originally Posted by SB
Definately not with schitty or just okay conventional heads.


I think Steve Morris does alot with the Brodix Head hunter heads, but heres a setup with the 355cc Dart conventionals. https://www.youtube.com/watch?v=tTZkIG3RExI#t=208
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Old 02-27-2015 | 07:27 PM
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Ah, Steve Morris. He was the machinist at the local Napa store in my home town. He did all the machine work on my first engine rebuild. 2.8L V6 GMC Jimmy engine. He sent me home with a machined block, a master rebuild kit, torque spec, clearance #'s and plasti-gauge. Told me what to do and how to read the plasti gauge. I asked what oil to run and he said straight 30w, nothing any thinner. 180,000 miles later I sold it $1500. Lol
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Old 02-27-2015 | 08:02 PM
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Originally Posted by Rookie
Ah, Steve Morris. He was the machinist at the local Napa store in my home town. He did all the machine work on my first engine rebuild. 2.8L V6 GMC Jimmy engine. He sent me home with a machined block, a master rebuild kit, torque spec, clearance #'s and plasti-gauge. Told me what to do and how to read the plasti gauge. I asked what oil to run and he said straight 30w, nothing any thinner. 180,000 miles later I sold it $1500. Lol
Nice! I always like watching his builds. Some cool stuff. Anyone have any extra butter?
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Old 02-27-2015 | 08:07 PM
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He also freshened up the heads. I believe he went to Dart a few months after that.
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Old 02-27-2015 | 09:06 PM
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Where is Steve Morris located now?....still in the Muskegon area?
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Old 02-27-2015 | 09:29 PM
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Originally Posted by KAAMA
Where is Steve Morris located now?....still in the Muskegon area?
Yes Muskegon area.

I remember a few years back we were talking about achieving HP goals. I was asking him questions about superchargers, blowers and turbos. He said, "Superchargers to about 2000HP and Turbos after that. Turbos are for when you get serious about making power." Lol

http://www.stevemorrisengines.comSteve Morris Engines

Racing Car Parts Store
750 E Ellis Rd, Norton Shores, MI 49441

Last edited by Rookie; 02-27-2015 at 10:55 PM.
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Old 02-28-2015 | 05:08 AM
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4 pages and still nothing wrong with the port? Here is a company that has 15 5axis CNC machines and someone makes a comment that the port leaves a lot left to be desired. I'm sorry guys I just don't buy it. With all the engineers and air flow specialists that work for the company don't you think that if a problem was discovered with the port a few changes would be made to the program and corrected immediately. I think what we have here is a few people that don't know what they are doing/ talking about making statements about a great product that they have no buisness commenting about. Any monkey with a dremel tool and a flow bench can get a port to flow more CFM but this doesn't equate to making horsepower.
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Old 02-28-2015 | 06:47 AM
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I think I will stay out of these threads and just "like" the winners.
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