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1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

A little disappointing....

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Old Apr 23, 2015 | 09:05 PM
  #16  
MIKES 68 F100's Avatar
MIKES 68 F100
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run with Headers and dual 2.5 exhaust
 
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Old Apr 23, 2015 | 09:09 PM
  #17  
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oh i cut column labels out
from left to right

1st red = flywheel HP
1st green= flywheel TQ
2nd red = est wheel HP
2nd green= est wheel TQ
 
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Old Apr 23, 2015 | 09:10 PM
  #18  
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What about with a 10.2 CR?
If that's the case, I'm gonna get headers and new Pipes ASAP!

Got any idea what the ideal primary tube size is? 1-3/4?
 
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Old Apr 23, 2015 | 09:18 PM
  #19  
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i tried 10.0 very little change (like 5-7hp) with that cam and stock exhaust manifolds she just can't breath right . Get the headers , I think you will be very happy with the added HP for little $$ and time .
 
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Old Apr 23, 2015 | 09:24 PM
  #20  
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Well cool! I'll buy a set of headers then.
 
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Old Apr 23, 2015 | 09:25 PM
  #21  
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do you know the valve sizes ? I know the cleveland had big valves for stock , I guessed at 2.02/1.65
 
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Old Apr 23, 2015 | 09:51 PM
  #22  
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You guessed almost perfectly. 2.04/1.65 for the 2V heads.

The 4V heads were HUGE.
2.19/1.71.
 
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Old Apr 24, 2015 | 08:53 AM
  #23  
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so you have 2V heads ? i'll make change and run again , probably won't make much difference.
last 351c I dealt with was in early 90s , my dad had it and we were going to put it in a 65 Econoline pickup , that would have been one fun ride .
 
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Old Apr 24, 2015 | 11:06 AM
  #24  
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After a lot of browsing the forums and looking online. It is rumored that 71-73 mustang headers will fit the truck and Cleveland engine.

Hedman's long tubes are $212
Hooker's are $246

hedman has the more desirable 1-5/8" tubes compared to Hooker 1-3/4".
 
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Old Apr 24, 2015 | 01:43 PM
  #25  
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Don't forget you will have to "tune" the carb again after opening up your exhaust.


Why are the hedmans more desirable? Piping routing for clearances?
 
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Old Apr 24, 2015 | 01:58 PM
  #26  
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Smaller primary tubes, better suited/sized for my purposes and engine.
 
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Old Apr 24, 2015 | 10:32 PM
  #27  
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The carb will have to be tuned richer a couple settings I've heard.
 
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Old Apr 27, 2015 | 06:08 PM
  #28  
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Ordered headers last night. Should be here Friday.
 
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Old Apr 27, 2015 | 09:10 PM
  #29  
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Nice, will you be updating this thread or put it in another?
 
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Old Apr 28, 2015 | 12:38 AM
  #30  
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Probably both
 
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