Author Topic: Horsepower guesses  (Read 2153 times)

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Stangman

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Horsepower guesses
« on: July 25, 2022, 10:47:19 PM »
So if everything stays on schedule my motor will be dynoed on Wednesday. I have been trying to figure out what my other motor made by all the calculators and my recent post on drivetrain loss. But
I guess it won’t really matter come Wednesday but I just wanted to figure out what I gained with the rebuild. So this is the setup or should I say everything I know at this time.
63.5 427 CO 4.265 bore—4.250 stroke
Scat H beam
Diamond pistons 10.5 to 1 compression (which is a smidge less than I had). 10.75 before.
All of the above is from previous motor.
Cam solid roller 258/265 @50 650 lift on a 112 lobe
Crower lifters
Survival heads with a 2.22 intake for Blair’s valve job no work to them besides a clean up in chamber.
Springs 290 closed and 550 open. ( not positive I have it written down).
TD race rockers
Manton 3/8 1.45 wall
Still have the blue thunder 2x4
Quick fuel 750s
This is all I have now if I think of anything else I will update.
So let’s guess.
I don’t have any prizes like Brent and Ross you will have to settle for an ata boy.
« Last Edit: July 25, 2022, 10:53:17 PM by Stangman »

cjshaker

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Re: Horsepower guesses
« Reply #1 on: July 26, 2022, 12:40:21 AM »
580 HP
Doug Smith


'69 R-code Mach 1, 427 MR, 2x4, Jerico, 4.30 Locker
'70 F-350 390
'55 Ford Customline 2dr
'37 Ford Coupe

shady

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Re: Horsepower guesses
« Reply #2 on: July 26, 2022, 08:26:41 AM »
581
What goes fast doesn't go fast long'
What goes fast takes your money with it.
So I'm slow & broke, what went wrong?
2021 FERR cool FE Winner
2022 FERR cool FE Winner
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machoneman

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Re: Horsepower guesses
« Reply #3 on: July 26, 2022, 10:28:49 AM »
572 hp
Bob Maag

frnkeore

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Re: Horsepower guesses
« Reply #4 on: July 26, 2022, 12:21:55 PM »
569
Frank

fryedaddy

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Re: Horsepower guesses
« Reply #5 on: July 26, 2022, 01:05:11 PM »
604 hp was my original guess,i had lowered it to be safe,but since someone guessed 603 i will go with my first instinct 604 hp
« Last Edit: July 27, 2022, 08:21:40 PM by fryedaddy »
1966 comet caliente 428 4 speed owned since 1983                                                 1973 f250 ranger xlt 360 4 speed papaw bought new

6667fan

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Re: Horsepower guesses
« Reply #6 on: July 26, 2022, 09:04:47 PM »
603

Similar build to mine, slightly less compression.

Good Luck!
JB


67 Fairlane 500
482 cid 636/619.
Tunnel Wedge, Survival EMC CNC heads, Lykins Custom Hydraulic Roller, Ram adjustable clutch, Jerico 4-spd, Strange third member with Detroit Locker, 35 spline axles, 4.86
10.68@125.71 1.56 60’

Stangman

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Re: Horsepower guesses..
« Reply #7 on: July 26, 2022, 10:06:10 PM »
Thanks for the guesses guys. Only 6 guesses boy see what happens when you don’t give something away :). I’m hoping for 620 but I can dream.

blykins

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Re: Horsepower guesses..
« Reply #8 on: July 27, 2022, 04:34:47 AM »
Thanks for the guesses guys. Only 6 guesses boy see what happens when you don’t give something away :). I’m hoping for 620 but I can dream.

I think if you would have put it on the main forum instead of this subset forum, you would have got more responses.

Are the heads as-cast or are they the CNC ported heads?

If the heads are as-cast, and it's an "averagely generous" dyno, I'll go with 566 hp. 
Brent Lykins
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KMcCullah

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Re: Horsepower guesses
« Reply #9 on: July 27, 2022, 10:33:06 AM »
590HP Blair's valve job may surprise us.  8)

Sounds like a sweet build. Looking forward to seeing a timeslip.
Kevin McCullah


Joe-JDC

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Re: Horsepower guesses
« Reply #10 on: July 27, 2022, 11:24:03 AM »
583 hp @1.2/CI, and with 290 cfm 596 hp, with 300 cfm 616 hp.  Joe-JDC
Joe-JDC '70GT-500

Stangman

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Re: Horsepower guesses
« Reply #11 on: July 27, 2022, 12:37:55 PM »
Brent they are as cast with a clean up in chamber and Blair put a 2.22 valve in it to perform his vallve job and the stock 1.72 exhaust. I believe a cleanup as far as port matching
and right under carb clean up. I dont know about Blairs dyno I think its fairly new to him but an older dyno. I believe they flow 290 stock on the intake Joe-JDC 

Stangman

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Re: Horsepower guesses
« Reply #12 on: July 27, 2022, 06:32:33 PM »
So there was a distributer gear problem so dyno got pushed to tommorrow.  so more guesses

cjshaker

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Re: Horsepower guesses
« Reply #13 on: July 27, 2022, 09:16:37 PM »
Did Blair build the engine?
Doug Smith


'69 R-code Mach 1, 427 MR, 2x4, Jerico, 4.30 Locker
'70 F-350 390
'55 Ford Customline 2dr
'37 Ford Coupe

Stangman

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Re: Horsepower guesses
« Reply #14 on: July 27, 2022, 11:37:28 PM »
Yes Doug as much as I like to do it there was just to much stuff I don’t do including block drilling for more oil to lifters, and pushrod oiling. I had thought that I was going to need a sleeve in one cylinder but I didn’t. I figured Blair would be the best at doing both of those jobs. I guess it’s always cool to get a big number dyno wise but as long as it’s all good in the end. I had very good luck with my motor for the last 6 or 7 years and I’m hoping to have the same luck again. I