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Old 08-02-2008, 06:16 PM
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327 heads.

I have a 1969 chevy kingswood with the stock 327 in it. I'm thinking about rebuilding the motor but this thing is a huge car I'm wanting it to at least get outta its own way. What would a good stock chevy head be for this motor. Prolly gonna put a mild cam and definately gonna change the intake over to a 4 barrel prolly a performer or rpm performer..

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Old 08-02-2008, 10:10 PM
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There are no real stock heads that will make the 327 a torque engine, best bet would be to find a 400 sbc and go through it or a 350. Doesn't cost any more to build one of those than it does the 327.

If thats not an option the I would get a set of the GM vortec heads, any one of the good available torque type cams, an Edelbrock Performer (not rpm) and a GOOD rebuilt quadrajet or a 570 cfm Holley Street Avenger.

One of the best moves if the budget allows is a rear end gear change, you're probably running 2.80's - 3.00's. Step up to a 3.50 - 3.73 to get that monster moving. A 700R4 would be nice also but that would cost some bucks....
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Old 08-03-2008, 09:11 AM
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Yea I'm wanting to keep the 327 cause its the factory motor in the car.. Otherwise I'd just do a bigblock...
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Old 08-03-2008, 12:21 PM
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PROLLY should look at heads on there now. PROLLY find that they're PROLLY smog heads. PROLLY should change to something PROLLY smaller chamber.
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Old 08-03-2008, 02:22 PM
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I'll issue my standard answer for movin' tugboats around. Yank the 327/trans and wrap them up to be stored in the corner of the garage. Transplant a stock 472/500 Cadillac with TH400. 500 ft/lbs of torque that you would have to spend multi-thousands of dollars to achieve with the 327.
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Old 08-03-2008, 05:13 PM
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If you want a period correct 327 that will make more power than your 327 2bbl motor, look for a set of the 186 or 041 head castings from the 1969 327-300hp Impala/Corvette motor.
With moderate home brewed street porting these heads flow very well and make good overall power. They have 64cc +/- combustion chambers.
Build a torquey 327 station wagon motor by combining these home ported 186/041 "300hp" casting heads with a measured 9.8:1 compression ratio, hi rise dual plane intake manifold, headers, 2.5" dual exhaust and a mild RV type cam of around 204/214 @.050" and 1.6 rockers.
Change the rear gear ratio in your Kingswood to 3.73's and install a mild hi stall torque converter (11" diameter) and your old wagon will perform pretty good overall without ruining the origionality, or streetability of it.

Althou not period correct, GM vortec heads "062 castings" would work very well too. They make very very good street performance oriented power.
Another good alternative would be L-98/ ZZ-4 58cc corvette aluminum heads 113 castings with the same home port job.

Have the block "0 decked" using flat top +.030 327 pistons and 63cc finished head volume for 9.8:1 cr with a .040" gasket.

What is the casting number on your 327 heads now?

http://www.ststurbo.com/ Something to consider to really wake up that 327 wagon.
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Old 08-03-2008, 09:47 PM
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Quote:
Originally Posted by F-BIRD'88
If you want a period correct 327 that will make more power than your 327 2bbl motor, look for a set of the 186 or 041 head castings from the 1969 327-300hp Impala/Corvette motor.
With moderate home brewed street porting these heads flow very well and make good overall power. They have 64cc +/- combustion chambers.
Build a torquey 327 station wagon motor by combining these home ported 186/041 "300hp" casting heads with a measured 9.8:1 compression ratio, hi rise dual plane intake manifold, headers, 2.5" dual exhaust and a mild RV type cam of around 204/214 @.050" and 1.6 rockers.
Change the rear gear ratio in your Kingswood to 3.73's and install a mild hi stall torque converter (11" diameter) and your old wagon will perform pretty good overall without ruining the origionality, or streetability of it.

Althou not period correct, GM vortec heads "062 castings" would work very well too. They make very very good street performance oriented power.
Another good alternative would be L-98/ ZZ-4 58cc corvette aluminum heads 113 castings with the same home port job.

Have the block "0 decked" using flat top +.030 327 pistons and 63cc finished head volume for 9.8:1 cr with a .040" gasket.

What is the casting number on your 327 heads now?

http://www.ststurbo.com/ Something to consider to really wake up that 327 wagon.
The engine thats in it has mix matched heads I know the stock head is a 185 casting but i haven't looked at the other head. It runs like crap idles rough and loves to die if i have the AC on...
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Old 08-03-2008, 10:08 PM
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The 185 head was a low perf, low compression 307, 327 2bbl head.
There is lots of room for improvement.
What is your budget on this build? Does the 327 need rebuilding?
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Old 08-04-2008, 12:21 AM
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the engine was supposed to have been rebuilt once and the head was cracked thats why the mismatched head is on there. I've rebuilt the carb set the timing did a tune up and changed the fuel filter, pcv valve, crank case breather filter, and ran some carb cleaner in the gas with every fill up, but the car still idles like crap and dies, sounds like it has a lope at idle. It also burns oil but I think its just the valve seals cause the plugs are saying that when i changed them they weren't covered in oil just had some deposits on them... I was thinking about getting the 186 or the 041 heads and putting them on my 350 in my truck and putting the 487x heads off the truck on the 327. Would this be better than the heads that are on the wagon now?
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Old 08-04-2008, 12:35 AM
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No,the chamber volume is even larger. The compression ratio will be even lower. If they don't work on the truck 350, why would they work on a 327? Junk is junk. If you want high performance from a motor, get a high performance cylinder head.
The 062 vortec heads are pretty well goof proof. A good way to go.
A vortec style intake manifold is required.
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Old 08-04-2008, 12:45 AM
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They work on the truck I just want more power from the truck but didn't know if i put the ones off the truck on the wagon if it would be better or worse. I think I'm gonna get the 186's for the wagon and the truck...
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