Aluminum head recommendation for 350 - Chevelle Tech
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post #1 of 20 (permalink) Old Apr 9th, 20, 11:19 AM Thread Starter
 
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Aluminum head recommendation for 350

I need some advice in what aluminum heads to get for my 1970 350. The motor is being rebuilt .030 over, flat top pistons with 4 reliefs, just like the stock ones. I've got a summit 1785 flat tappet cam 274 int/274ex .450 lift 106 lsa. I plan on an edelbrock performance eps intake, and not sure if I'll get a holley or edelbrock carb. It has cheapie summit long tube headers. Its going in my 70 malibu, with an m20, 3.31 rear gears. I want 64cc chambers so I can retain the supposed 10.25:1 compression it had from the factory. The car will likely never see a drag strip, it's just for cruising around town, car shows, stuff like that. Occasionally a spirited romp on the throttle but that's it. I'm looking for a cost effective entry level aluminum head (around $1000). What should I look for? (Brand, runner size, deck thickness)
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post #2 of 20 (permalink) Old Apr 9th, 20, 12:28 PM
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Re: Aluminum head recommendation for 350

Brodix Iron Killers 180's is a great choice!!

67 chevelle malibu / SS/ custom

Currently undergoing a metal work to remove all rust, if I ever get there.

Cant decide on prostreet or cruiser with a 4 speed.
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post #3 of 20 (permalink) Old Apr 9th, 20, 2:12 PM
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Re: Aluminum head recommendation for 350

Speedway Motors has the brodix IK series 64cc chambers 180cc intakes for $999. shipped

https://www.speedwaymotors.com/Brodi...bs,296310.html

good price but you should still search for reviews
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post #4 of 20 (permalink) Old Apr 9th, 20, 4:06 PM Thread Starter
 
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I was eying the brodix IKs, they seem perfect for what I would be using them for.
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post #5 of 20 (permalink) Old Apr 9th, 20, 6:42 PM
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Re: Aluminum head recommendation for 350

Got a brand new set id let go for 1200+ship
Aluminum, well ported with flow sheet nice parts in them
Almost finished polishing the outside of 1, second is part way there.
1 pushrod pinch has a little epoxy in it, clean job

If interested pm. Im in these around a grand with everything and many hours of labor
AFR flow #s for less money

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post #6 of 20 (permalink) Old Apr 9th, 20, 9:31 PM
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Re: Aluminum head recommendation for 350

oops, saw you got an eps these use 1206 ports.
Good luck on your search. Lots of choices these days

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post #7 of 20 (permalink) Old Apr 9th, 20, 10:57 PM
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Re: Aluminum head recommendation for 350

Summit shows 62cc heads-not huge difference but with 106 deg LSA cam more compression will be your friend, maybe use 2 valve relief pistons instead of 4 valve relief also
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post #8 of 20 (permalink) Old Apr 9th, 20, 11:43 PM
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Re: Aluminum head recommendation for 350

OP I would also want to know about deck height or how far your pistons will be down or flush with deck height, it was needed info for my engine build to know final comp. ratio, just something to think about IMO


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post #9 of 20 (permalink) Old Apr 10th, 20, 12:16 AM
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Re: Aluminum head recommendation for 350

I have a similar engine in my 71 and with a 4 speed I bet your going to have fun!!

If you can swing a hydraulic roller cam, do it...


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post #10 of 20 (permalink) Old Apr 10th, 20, 6:51 AM Thread Starter
 
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The deck height is still stock (.025 in the hole), it's a numbers matching block/tranny so I didnt want to deck it and loose the serial numbers. The pistons will have a compression height of 1.560 (stock). I actually have to call the machinist and double check that he ordered the correct pistons. He said I would be fine with plain old cast pistons, but cant find any with that compression height.
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post #11 of 20 (permalink) Old Apr 10th, 20, 7:07 AM
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Re: Aluminum head recommendation for 350

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post #12 of 20 (permalink) Old Apr 10th, 20, 7:34 AM
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Skip white sells Wiseco pistons with a 1.575 CH. Just an FYI. This would put you .010 in the hole and with the GM composition head gasket of .028 your quench would be set.
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post #13 of 20 (permalink) Old Apr 10th, 20, 9:55 AM Thread Starter
 
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Those wisecos look like they would be the ticket. I was worried about having to run a shim gasket with aluminum heads. Those would fix that. Thanks for the heads up!
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post #14 of 20 (permalink) Old Apr 10th, 20, 10:13 AM
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Re: Aluminum head recommendation for 350

I wonder about that cam choice. Lots of duration, 106 centers, and only .450" lift with actual 9.75 CR or so. If that's really what you want, go for it, but I'd go with a bit more lift, (1.6 rockers with a conservative cam?) less duration, and at least 110 centers. But what you've spec'd would give a pretty radical idle I suppose.
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post #15 of 20 (permalink) Old Apr 10th, 20, 10:26 AM
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Re: Aluminum head recommendation for 350

sounds like an old crane stock lift rule cam that was popular.
It would make tons of torque on the st..sounded good but was real driveable
Sounded big but wasnt

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