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Smog 454 build

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Old Dec 6, 2017 | 06:53 AM
  #41  
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Originally Posted by The13Bats
I hope im not high jacking but curious what you guys see as the best gm iron bb head for just a street beast....
Street? 049 or 781. If you are staying with flat or dished truck pistons, 215 or equivalent closed chamber heads will get you closer to 9:1. But once you start getting head guy to undo 40 years of seat and guide wear, you are approaching the price of new aftermarket iron heads that are far superior flow-wise.
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Old Dec 6, 2017 | 07:55 AM
  #42  
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Originally Posted by Vortecpro
Jim, its beyond virgin....very rarely do you see them that desirable, and 75 percent of them I start with are virgin but can have problems, that one doesn't have problems! Of course the cam tunnel is always a consideration.
what are you seeing that I’m not? Hey I like this guy👍. And to answer a few more questions I’m not getting aluminum heads anytime soon. I was just glad to have 781’s...2 bolt main was kinda depressing but arp studs should help. And for 427hotrod that is a good point I will have to look more into drilling for that!
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Old Dec 6, 2017 | 08:12 AM
  #43  
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Originally Posted by Muzzyzx7rr
im doing rpm with Holley double pumper. What are you using as your air filter to get under an l88 as far as drop down air cleaner. I really like the air cleaner that is mounted to the bottom of the hood do you guys know what that is?
The L88 air cleaner with the filter in the hood.
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Old Dec 6, 2017 | 08:18 AM
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Originally Posted by Sigforty
The L88 air cleaner with the filter in the hood.
meow well I guess that was a dumb question as it looks like my question WAS my answer lol.
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Old Dec 6, 2017 | 08:18 AM
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Originally Posted by Muzzyzx7rr
meow well I guess that was a dumb question as it looks like my question WAS my answer lol.
supposed to be wow.... not MEOW
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Old Dec 6, 2017 | 08:24 AM
  #46  
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Originally Posted by The13Bats
I hope im not high jacking but curious what you guys see as the best gm iron bb head for just a street beast....
781 049 by far, no need for studs on that build.
Your exact 2 bolt block in action

Last edited by Vortecpro; Dec 6, 2017 at 08:41 AM.
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Old Dec 6, 2017 | 10:38 AM
  #47  
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Originally Posted by Muzzyzx7rr
supposed to be wow.... not MEOW
Lol, I was thinking you were a super troopers fan!
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Old Dec 6, 2017 | 10:39 AM
  #48  
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Originally Posted by Vortecpro
781 049 by far, no need for studs on that build.
Your exact 2 bolt block in action
https://youtu.be/t4azWT5DXqo
I love watching videos of your engines.
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Old Dec 6, 2017 | 11:03 AM
  #49  
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Originally Posted by Sigforty
Lol, I was thinking you were a super troopers fan!
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Old Dec 6, 2017 | 11:05 AM
  #50  
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Originally Posted by Sigforty
I love watching videos of your engines.
man that’s sweet!!!
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Old Dec 6, 2017 | 01:08 PM
  #51  
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Muzzy,

Send your heads to VortecPro, get his Isky hydraulic roller cam kit, run the RPM air gap and 850DP... make an easy 600hp.

The RPM air gap will fit under the L88 hood if you run the LT1/L88 style air cleaner with the 2” drop base and a single gasket under the carb.

Hedman makes a nice set of 2” headers for the C3 and build a nice 3” exhaust.

You’ll have a high 10/low 11 second car.

Trust me.


BTW, do you actually have a Muzzy Raptor 750? I always loved those things. Very rare and unique.
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Old Dec 6, 2017 | 02:26 PM
  #52  
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Originally Posted by ajrothm
Muzzy,

Send your heads to VortecPro, get his Isky hydraulic roller cam kit, run the RPM air gap and 850DP... make an easy 600hp.

The RPM air gap will fit under the L88 hood if you run the LT1/L88 style air cleaner with the 2” drop base and a single gasket under the carb.

Hedman makes a nice set of 2” headers for the C3 and build a nice 3” exhaust.

You’ll have a high 10/low 11 second car.

Trust me.


BTW, do you actually have a Muzzy Raptor 750? I always loved those things. Very rare and unique.
no I don’t and yes they were awesome! I had a Muzzyzx7rr zx7rr, nowhere near the raptor but still a very low production bike.

vortecpro what would you do to my heads and how much😊
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Old Dec 10, 2017 | 08:14 PM
  #53  
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Default Holley dp

I’m having a hard time finding a polished Holley dp with electric choke, any ideas?
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Old Sep 5, 2020 | 09:52 AM
  #54  
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Default What have I done

See what you guys made me do 😂



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Old Sep 5, 2020 | 10:26 AM
  #55  
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That looks great! What heads, cam and piston combo did you use? AFR 265's?
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Old Sep 5, 2020 | 10:29 AM
  #56  
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Originally Posted by RatRacer
That looks great! What heads, cam and piston combo did you use? AFR 265's?
I went with the 290’s. Same cam as Before 258-263 640 lift 109lsa. Pistons are forged wiseco 21cc dome.

Last edited by Muzzyzx7rr; Sep 5, 2020 at 10:52 AM.
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Old Sep 5, 2020 | 12:30 PM
  #57  
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Nice. Did you end up about 10:1?
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Old Sep 5, 2020 | 12:50 PM
  #58  
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No I’ll be right around 11:1 compression.
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Old Sep 5, 2020 | 03:29 PM
  #59  
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You said in your first post that you were located in Utah. What is the elevation there? 11:1 compression should be perfect.
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Old Sep 5, 2020 | 03:38 PM
  #60  
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We’re at just barely above 4000 feet where I’m at so should be perfect.
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