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  #1  
Old Nov 10th, 12, 06:54 PM
Barley pop Barley pop is offline

Royce
 
Join Date: Nov 2012
Location: PEKIN IL
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Default Aluminum heads

I am thinking of getting some aluminum heads for my 69 with a 396. if i remember right the motor is out of a 70 or 72 chevelle. it is basically a stok motor with an air gap intake and a holly 750 on it.

I am considering a head and cam package just for the ease of everyting working together.

you guys got any sugestions ???
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  #2  
Old Nov 10th, 12, 07:00 PM
bigblockragtop bigblockragtop is offline
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mike
 
Join Date: Jan 2011
Location: west coast
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Default Re: Aluminum heads

There are a ton of good heads for Chevy big blocks, Merlin, Brodix, dart. Why aluminum heads anyway is it for weight? Or are you upping the compression? Just curious. I have iron heads (merlin) I am happy with them.
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  #3  
Old Nov 11th, 12, 06:12 PM
copo9560 copo9560 is offline
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Tom
 
Join Date: Jan 2009
Location: St. Louis
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Default Re: Aluminum heads

For a 396 some aftermarket oval port heads would be ideal - will likey outflow OEM rectangular heads while keeping small ports and torque curve down low.

Brodix Racerite or AFR ovals are not cheap but would probably wake your car up with a cam swap. I imagine both companies could make recommendation on a cam as well. Assuming you are on a hydraulic flat tappet now, are you planning to run the same or upgrade to roller?
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  #4  
Old Nov 11th, 12, 07:45 PM
Barley pop Barley pop is offline

Royce
 
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Default Re: Aluminum heads

i was considering this combo pack http://www.summitracing.com/parts/tf...et?prefilter=1

i am sure it is not the best and i am not expecting the best considering the budget i have however i do want the max bang for the bucks i do have to spend. I am not looking to make a race car by any means. just a fun cruiser.
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  #5  
Old Nov 11th, 12, 08:36 PM
Eleanor's Nemesis Eleanor's Nemesis is offline
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Michael Gekko
 
Join Date: Mar 2006
Location: Wrightsville Beach, NC
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Default Re: Aluminum heads

What casting number heads do you have now? You can use some closed chamber ovals like 215 or 063, or some open chamber ovals like 049 and with some machining they can work very well with your 396. Even the 'peanut port' heads have potential as a member here named Mark Jones has shown (his screen name is VortecPro). I think you could spend about half of what that Summit package costs on some old GM iron ovals and get the same performance result. Try to find Mark here, he is a machinist by trade and has supplied hardware to several folks here and at Team Chevelle.
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  #6  
Old Nov 13th, 12, 08:15 PM
97Z4C 97Z4C is offline
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darrell
 
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Location: texas
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Default Re: Aluminum heads

the factory closed ovals are good heads for 396--if you insist on alum. consider the afr 265 oval
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  #7  
Old Dec 9th, 12, 02:57 PM
Barley pop Barley pop is offline

Royce
 
Join Date: Nov 2012
Location: PEKIN IL
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Default Re: Aluminum heads

The casting numbers are 336781. Sorry it took so long have not had time to mess with the car for awhile. Are these heads any good? Form the short search it seems most people like the 781 heads

Also I was correct the motor is form 72. The casting on it is 399290. So it appears it is a 402 from 72
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  #8  
Old Dec 9th, 12, 04:14 PM
Eleanor's Nemesis Eleanor's Nemesis is offline
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Michael Gekko
 
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Default Re: Aluminum heads

Yes, the 781 is a good factory head for performance.
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1968 Camaro NHRA/IHRA SS/C 'Super Stocker' 396/Jerico
1968 Street/Strip Camaro 350 w/PG
1968 Caprice NHRA/IHRA Stock ELiminator O/SA 327-250 HP



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  #9  
Old Dec 9th, 12, 10:01 PM
ron498 ron498 is offline
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Ron
 
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Default Re: Aluminum heads

The 781 is great, but it's also 119cc chamber. On a 402, your compression will be around 8:1. Unless the pistons have been changed.
For an alum head, Edelbrock makes a 290c Roval with a 100cc chamber. It is for marine applications. Flows well and will raise your compression.

Ron
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