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Old 07-05-2007, 01:59 PM
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SBC aluminum head recomendations

I would appreciate some recomendations for aluminum heads. I am an iron head guy and have a friend that wants to use aluminum heads on a 400 sb I am going to build for him. Here are some details:

.030 over 400 SBC
5.565 stock rods
stock 3.75 stroke crank
12.5cc dish hypereutectic speed pro pistons
Cam is up in the air but thinking along the lines of an ISKY 280 Mega hydraulic flat tappet(he wants it to sound good for cruises)
750cfm Edelbrock carb
Weiand stealth dual plane intake
GM HEI dizzy

This is going into his Cameo pickup. Strickly a cruiser for rod runs and shows.

I was looking at the Brodix IK200's,sooooo many choices these days.

Thanks

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Old 07-05-2007, 02:49 PM
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I've never used them, but I've seen some good reviews on these heads from posters on this board. They're very affordable (probably a result of Chinese labor) and look good to me at the outset, without having used them personally.

They're available with 64 or 68 cc chambers and the 195 cc intake runners should work well on a 400 street motor. The 68's with a Fel-Pro 1014 head gasket and zero deck would yield a static compression ratio of 10.30
http://cgi.ebay.com/ebaymotors/PATRI...spagenameZWDVW
You'll have to drill the heads for steam holes to work on the 400 block. Patriot will do this for $80 before they ship them or you can do it yourself according to these instructions:
www.gregsengine.com/350to400.htm

In my opinion, you're right in the ballpark with the cam. Something in the 225* to 230* @ 0.050" tappet lift should do the trick. I'll include my standard caveat in cam selection:
NEVER TAKE THE WORD OF ANY MEMBER ON ANY ONLINE FORUM AS THE FINAL WORD IN CAMSHAFT SELECTION. ALWAYS SPEAK ON THE PHONE WITH THE TECH GUY AT YOUR FAVORITE CAM GRINDER FOR A RECOMMENDATION.
If the cam you land on doesn't have enough rump-rump, talk to the tech guy at the cam grinder about tightening up the lobe separation angle when they grind the cam. An LSA of around 106* will usually do the trick.

This is just my opinion. Others may have different opinions.
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Old 07-05-2007, 03:03 PM
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Thanks for the reply. I am glad you mentioned the Patriot heads. I was just looking at them before I checked for replies here. They have the available chamber size I need and the price is right. Hopefully the quality is also.
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Old 07-05-2007, 03:28 PM
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Personally, I would look at the Edelbrock Performer RPM (64cc chambers, a little over 10:1). While the 170cc intake ports may look small, the throttle response with the port velocity would make for a great show & go driver. Plus they have straight plug versions for happy spark plug changing.

And they are made in America.

toim
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Old 07-05-2007, 04:10 PM
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The Edelbrock RPM heads are a good choice at a good price. The port design
works great for horsepower and the small port size helps to generate power at
lower RPM for a street cruiser.

If he decides he needs more flow later, the RPM heads respond well to porting.
I know several people that run them at the drag strip with excellent results.
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Old 07-05-2007, 04:54 PM
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Ok, I had someone tell me on another site that the Patriot heads I saw on Ebay(Skip White heads) were not the real Patriot heads. huh?

I will look into the Edelbrock heads. Thanks for the recommendation!
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Old 07-05-2007, 05:59 PM
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Trickflows are about the same price as the rpms.
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Old 07-05-2007, 06:32 PM
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I recently ported a set of Ford trick flow heads, I was impressed with the quality.

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Old 07-05-2007, 09:05 PM
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I have been running TF 23* 195 cc with 64cc chambers on a modified 350 and now on my 383 for about 5 years. Nice heads, for the price.

Check flow numbers @ lift. My TFs stop at about 0.550 lift, which is ok as the cam lift (XE 274 Hydraulic flat tappet) only goes to about 0.500 lift.

You have to match your parts! No sense using heads that will flow @ 0.600 if you only plan to use a cam that lifts 0.500. I checked the difference between AFRs and the TF for flow @0.500 and there wasn't enough difference to justify the additional cost of the AFRs.

My car is a 99% street cruiser - '76 4 speed 'vette.
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