289 Build HP Predictions - Page 2 - Vintage Mustang Forums
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post #16 of 58 (permalink) Old 05-18-2019, 04:47 PM
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If you don't know, your builder should. If he doesn't know either, then you have a problem. LSG
He is the builder...

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post #17 of 58 (permalink) Old 05-18-2019, 05:20 PM
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Definitely more then my GT40P.
Sounds like more than mine too However on a HP to $ ratio,,,,,, I think we have him beat
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post #18 of 58 (permalink) Old 05-18-2019, 06:19 PM
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World Products Sr. heads (some work done to them, well actually a lot of work done to them). 2.018 intake, 1.60 exhaust valves

Anyone care to guess horsepower and torque?
I'm just curious about the intake valves; why the slightly undersized big intake valves? A Windsor Sr head will take a 2.02 valve, correct?

My guess would be 435/375 on hp/tq.

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post #19 of 58 (permalink) Old 05-18-2019, 07:38 PM
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.002...there might be a difference in actual versus advertised there. 2.02 just rolls of the tongue a little easier.

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post #20 of 58 (permalink) Old 05-18-2019, 10:16 PM Thread Starter
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I'm just curious about the intake valves; why the slightly undersized big intake valves? A Windsor Sr head will take a 2.02 valve, correct?
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.002”...there might be a difference in actual versus advertised there. 2.02” just rolls of the tongue a little easier.
When the heads where flow tested, the valve sizes were given on the test sheet. I'm trying to pass along as many specifics as possible...

When I bought these heads I was given the information that "11.25 hours of porting and ultraviolet wet flowing from Top Kat Engineering who did development work for the IMSA GTO Mustangs in the mid 1980's"

Allen
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post #21 of 58 (permalink) Old 05-18-2019, 10:35 PM
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Maybe 451HP...🤣🤣🤣

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post #22 of 58 (permalink) Old 05-18-2019, 10:43 PM Thread Starter
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Maybe 451HP...������


If it did, I would fly to Seattle!!

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post #23 of 58 (permalink) Old 05-18-2019, 10:55 PM
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435 bhp @ 7,000 rpm
360 lb/ft tq @ 4,800 rpm

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post #24 of 58 (permalink) Old 05-19-2019, 01:01 AM Thread Starter
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If it makes 400 hp, I'll just buy the first round!!

Allen
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post #25 of 58 (permalink) Old 05-19-2019, 01:04 AM Thread Starter
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However on a HP to $ ratio,,,,,, I think we have him beat
I can't find an online calculator for that...

Allen
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post #26 of 58 (permalink) Old 05-19-2019, 04:16 AM
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If this isn't a secret, what did you get on your bench flow? I'm just comparing notes. My 430/370 was guessing a top end in the 7000 to 7200 range. What rpm do you plan to spin this up to would be the other question. I may have to revise my estimate.


Ah. I went back and caught the 7500 rpm part.


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post #27 of 58 (permalink) Old 05-19-2019, 05:51 AM
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If it makes 400 hp, I'll just buy the first round!!

Allen
Making HP is easy all it takes is a lot of these $ making reliability well that's another thing all together. Did you fix your steam generator intake to head mismatch yet


Brad

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post #28 of 58 (permalink) Old 05-19-2019, 08:15 AM Thread Starter
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Making HP is easy all it takes is a lot of these $ making reliability well that's another thing all together. Did you fix your steam generator intake to head mismatch yet
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Making HP is easy all it takes is a lot of these $ making reliability well that's another thing all together. Did you fix your steam generator intake to head mismatch yet
I wouldn't call it easy...but will agree reliability is an even bigger concern.

I'm not sure it is mismatched yet. I started checking the intake yesterday but decided to go fishing instead. I'll post results in my build thread.

The pictures show one side with the gasket on and the intake ports matched to the gasket and then what it looks like on the intake. The next step is going to be seeing how the ports line up with each other. As I've already told you, I still have ~1/4" gap from the intake to the block. I don't have a picture of it, but I will post one...

If there is a "mismatch", it will be corrected.

Steam generator?

Allen
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post #29 of 58 (permalink) Old 05-19-2019, 09:33 AM
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I wouldn't call it easy...but will agree reliability is an even bigger concern.

I'm not sure it is mismatched yet. I started checking the intake yesterday but decided to go fishing instead. I'll post results in my build thread.

The pictures show one side with the gasket on and the intake ports matched to the gasket and then what it looks like on the intake. The next step is going to be seeing how the ports line up with each other. As I've already told you, I still have ~1/4" gap from the intake to the block. I don't have a picture of it, but I will post one...

If there is a "mismatch", it will be corrected.

Steam generator?

Allen
@silverblueBP had I think a similar situation he had posted a pic of a huge cloud behind his car ,turns out the intake wasn't machined to match the heads which were also machined


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post #30 of 58 (permalink) Old 05-19-2019, 12:45 PM
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@silverblueBP had I think a similar situation he had posted a pic of a huge cloud behind his car ,turns out the intake wasn't machined to match the heads which were also machined
However, Mark is using a Ford Motorsports B2 block. His 289 heads needed considerable work to match with the gaskets.

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