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Chevy Bowtie Heads

02-17-2008, 04:59 PM
Just curious if anyone knows much about Chevy Bowtie Phase I heads. They are casting #14011034 from 1981 and I know they are a dealer performance item with 2.02/1.60 valves, 64cc chambers, 190cc runners and angle plugs. Just wondering if they are one of the Generals best heads and how they compare to other performance heads. I was thinking of getting them ported but would they really benefit much from it. Right now they have roller rockers and guide plates and I am going to port match them to my rpm airgap intake.

02-18-2008, 08:13 AM
For an iron head, they're okay. Quite dated, though. If you're looking for leading-edge stuff in iron, Dart Iron Eagle Platinum series are among the better ones. ProAction is another good one, but an "import".

As for the Bowtie stuff, it was good when it was new, but time marches on, and GM doesn't always pay attention to the calenders.


02-26-2008, 03:29 PM
Thanks for your info. I thought I heard somewhere that the Bowties were some of GM's best heads. I also heard the new vortec heads outflow pretty much all the old GM heads and are pretty cheap as well? I know a few "old school" people that have the double bump 461 and 041 heads and they like them. I'm the only one in my area that has the Bowties, but I haven't heard much about them.

I guess I'm just wondering if I should sink a few $ into porting the Bowties? Would porting them get them comparable to the newer performance heads out there and would it be worth the money? Or would I be better off putting the cash towards a better set later? Right now the old Nova is strictly used on the street, but I do plan on the occasional trip to the strip in the future.

02-27-2008, 07:50 AM
Iron Eagles are about $1K for a set. They too, can use some port work to be the best they can be.

Aluminum heads offer more potential. Dart Pro 1s are among the best of the 23 deg. variety. Edelbrock performer RPMs are a good street head, too.

Whether or not it's worth spending more on it, is entirely up to you.


04-27-2008, 09:37 PM
weren't those the heads on the trans-am 302's?
if so, then dont pass them up.
if not, then im retarted lol.

04-30-2008, 12:40 AM
No, I don't think they came on any production car. I think they were an over the counter performance part. They may have used them for Trans Am racing though, I'm not sure. Probably used them for various racing applications back in the day.

They are the current heads that are on my car and they do seem to work very well for my purpose. I was thinking on getting a new set, but may just stick with these. I am kinda partial to the factory stuff...for now anyways.

01-26-2010, 08:20 PM
The heads are a great investment now they make a phase 1 and 2 bowtie head both have the same casting number both are 202 160 valves 64cc and 186 runners. the only real way to tell them apart is where the water temparature sensor goes into the head on the phase 2 it is machined flat unlike the phase ones. and yes this is the best iron cylinder head GM makes they have alot of pottential for a budget build just check out some of the flow bench charts.:runaround::runaround::runaround:

04-03-2010, 08:09 PM
I have a set ready to go:

2.02 - 1.60 Titanium Valves & Retainers
7/16" Studs
750 CFM
Milled .070 under
Set up for .650 lift cam

These are not for center bolt valve covers

Asking $750 but will consider reasonable offers! No low ball offers please!
NOT interested in trades, I joined the Air Force and need the cash.

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