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What 1971 351W heads will get ya...

  • Thread starter Thread starter Brandon11010
  • Start date Start date May 5, 2008

Brandon11010

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#1
  • May 5, 2008
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Threw a set of 1971 351w heads on,Larger valves...350 chevy valves actually lol.... ported and polished exhaust ports, b303 cam, 1.6 compcams full roller rockers, Block bored .030... Forged stock pistions...Stock bottom end, Air-gap intake with a 650 demon to top it off... Dynoed at 344.5 Horse 359.9 Torque on the engine dyno at work... Not bad for factory Ford production cast iron heads...The best part was it only cost me $1500.00 , complete rebuild, because i work there :SNSign:
 

88mouse

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#2
  • May 5, 2008
  • #2
Brandon11010 said:
Threw a set of 1971 351w heads on,Larger valves...350 chevy valves actually lol.... ported and polished exhaust ports, b303 cam, 1.6 compcams full roller rockers, Block bored .30... Forged stock pistions...Stock bottom end, Air-gap intake with a 650 demon to top it off... Dynoed at 344.5 Horse 359.9 Torque on the engine dyno at work... Not bad for factory Ford production cast iron heads...The best part was it only cost me $1500.00 , complete rebuild, because i work there :SNSign:
Click to expand...



tell me how that works.
 

Brandon11010

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#3
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lol how what works?
 

Brandon11010

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ohh i see... lol sorry.... .030 thanks for pointing out that typo
 

88mouse

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#5
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Brandon11010 said:
ohh i see... lol sorry.... .030 thanks for pointing out that typo
Click to expand...

Lol just givin you hell. Good numbers tho by the way.
 
C

caseywan

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Chicago, IL
May 5, 2008
#6
  • May 5, 2008
  • #6
That's flywheel though right? If so that actually sounds kinda low to me to, could be wrong though.
 

Brandon11010

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#7
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Yea its flywheel... ya think that seems low? hmm..i was't expecting over 300, and the guys at work thought id get like 280...
 

Brandon11010

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#8
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We could have prob squeezed a few more out of it but we didnt even tune up the carb, because im stickin with fuel injection.. i really just wanted to hear it run before i put in in the car, and hopefully it will be a bit more too with the RPMII intake with 70mm throttle body..
 

Woodrow

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May 5, 2008
#9
  • May 5, 2008
  • #9
Take that pos b cam out! And you would prob see 360
 

Brandon11010

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#10
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Lol well what cam would you recommend?? i had a hell of a time picking one out with so many options... this seemed to be a descent all around cam for a daily driver..
 

88mouse

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#11
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  • #11
TFS1 FTW
 

Brandon11010

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Well this being my 1st engine build and on a limited budget... and hours of note taking, sound clips, forum browsing... it seemed like a safe pick at the time...lol
 

Brandon11010

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and since this post is acutally getting replies... and my other one in 5.0 tech isnt... about my vacuume line issues...any ideas?
 

blackened88lx

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Aug 9, 2006
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May 6, 2008
#14
  • May 6, 2008
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I still don't see how it's .030" over with stock pistons...
 
5

5.0ina66

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#15
  • May 6, 2008
  • #15
I'd put a TFS #1 in that thing, it'll make more power, run and drive better, and sound cool. The B303 is straight out of 1984, it was just made to keep the stock crappy speed density computer happy...it seems to do that well, but it pretty much fails at being a cam; too much duration and not nearly enough lift equals 'no' power

PS: That's damn good power even with a crap cam, yet more proof that ported iron heads DON'T suck!:D Oh, crap, I just noticed you said that’s with just the exhaust ports done...damn! I’m just imagineing what it would do with a full porting job and a good cam 
 

BlownFiveLiter

have car, will race....wait, it doesn't run
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May 6, 2008
#16
  • May 6, 2008
  • #16
blackened88lx said:
I still don't see how it's .030" over with stock pistons...
Click to expand...
Probably a stock replacement. TRW flat tops with valve reliefs, or something.
 

stykthyn

I want to measure mine. It doesn't look that tall.
15 Year Member
Jul 6, 2006
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May 6, 2008
#17
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  • #17
TFS1 FTW. best OTS cam ever
 

Brandon11010

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#18
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Man some of you are picky about little details lol...i ment stock forged style replacement pistons with the same 4 valve reliefs. lol, as in not higher compression ones..better? but i should have said hell yea stock pistions...just enormous rings... lol...and i dont know if id go as far as to call the b303 a crap cam..its a descent safe bet if your not completely sure what your doing... i see the Trick flow one only has a hair more lift.. i thought about that one but i read somewhere that going over .500 lift with stock pistions could bring up some clearance issues so i played it safe.. budget build
 

stykthyn

I want to measure mine. It doesn't look that tall.
15 Year Member
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May 6, 2008
#19
  • May 6, 2008
  • #19
true, better safe than sorry
 

blackened88lx

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Aug 9, 2006
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28
Connecticut
May 6, 2008
#20
  • May 6, 2008
  • #20
Brandon11010 said:
Man some of you are picky about little details lol...i ment stock forged style replacement pistons with the same 4 valve reliefs. lol, as in not higher compression ones..better? but i should have said hell yea stock pistions...just enormous rings... lol...and i dont know if id go as far as to call the b303 a crap cam..its a descent safe bet if your not completely sure what your doing... i see the Trick flow one only has a hair more lift.. i thought about that one but i read somewhere that going over .500 lift with stock pistions could bring up some clearance issues so i played it safe.. budget build
Click to expand...

Haha. Just messing mang. A kid I know had a dirt bike that was bored .030" over and burned up the piston the day before he was going to sell it. He threw the stock piston back in and stretched out the rings. It ran mint and the guy didn't have a clue.
 
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