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Messages - SRS_Chris

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FE Technical Forum / Re: 427 Low Riser - 500hp Goal
« on: February 19, 2016, 12:39:02 AM »
Update...
After some more measuring and careful shaping of the SSR, the heads are flowing well right up to .700 lift.  Peak flow is just over 290cfm@28".  280@.500 and 288 @.600 with next to zero loss at lower lift values.  More importantly, the gains came with minimal change in CSA.  I am pleased with these results.  These heads should work just fine on this 427FE.

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FE Technical Forum / Re: 427 Low Riser - 500hp Goal
« on: February 16, 2016, 09:41:17 PM »
Unrelated to this thread, but try this link...

http://www.wallaceracing.com/Calculators.htm


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FE Technical Forum / Re: 427 Low Riser - 500hp Goal
« on: February 16, 2016, 07:24:49 PM »
Thanks for the feedback Tommy.  I appreciate the experienced input.  There are dozens of formulas out there that people (myself included) use to calculate horsepower, airflow, required intake valve size, etc, etc, but relevant experience trumps all in my opinion. 

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FE Technical Forum / Re: 427 Low Riser - 500hp Goal
« on: February 15, 2016, 10:59:08 PM »
An update on this project...

The C3AE-H heads flowed really well out of the gate.  A basic three angle valve job and some minor blending in the bowl has yielded 271cfm@.500", 277cfm@.600", and 280cfm@.700" with a 2.19" valve.  These are much better numbers than I expected from these vintage iron heads.  I have a few more minor things that I want to try in the throat and at the SSR in an attempt to get solid 280's at .500 - .600 lift. 

The exhaust is flowing equally well with minor clean up.  Peak flow is around 220 cfm @ .700 lift. 

Does anyone have any tried and true Low Riser porting tips they wish to share? 

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FE Technical Forum / Re: 427 Low Riser - 500hp Goal
« on: December 29, 2015, 10:45:20 AM »
Thanks for the information everyone.  I will be sure to post updated information as this motor comes together.  It likely won't see the dyno until spring.

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FE Technical Forum / Re: 427 Low Riser - 500hp Goal
« on: December 23, 2015, 01:00:17 PM »
Thanks for the feedback.  The car is a street oriented 63 Galaxie with a 4 speed (original R-code car).  Not sure on the rear gear ratio yet; this will be something that I discuss with the owner in the new year.  My biggest concern right now is reaching our previously discussed horsepower goal without making the engine too "racy" for the Galaxie tank.  I am hesitant to go too large on the cam lobes for fear of making the engine a dog down low in a heavy car.

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FE Technical Forum / 427 Low Riser - 500hp Goal
« on: December 23, 2015, 10:36:00 AM »
I have been searching through the dyno section looking for comparable builds to some avail, but I wanted some direct feedback from experienced FE owners/builders as well.  I have a 1963 427 build on the go right now.  The customer has a target of 500-550 horsepower on pump fuel.  Here is the plan thus far:

- Block: 1963 casting, no oil to lifters, cross bolted mains
- Crank: Ford 3.78 stroke
- Rod: Ford 6.488"
- Piston: Icon flat top (yield ~10.5:1 static)
- Head: Ford '63 Low riser head.  Cut for 2.19 intake valve, 1.75 exhaust valve.  Port work and flow testing to follow.  Looking to go 260 - 270 cfm on intake while keeping CSA down.
- Intake: Ford medium riser dual quad
- Carbs: Ford/Holley BK and BJ carbs
- Camshaft: Solid Roller.  Looking at Crower 16462 depending on head flow numbers.  If heads flow beyond .600" without backing up will likely go to a Crower 16463.
- Lifters: Crower Solid Roller
- Rockers: Harland Sharp bushed (complete system)

I am not too proud to say that my FE experience is limited, so if you see anything that jumps out at you please let me know. 

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