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#1
05-17-2015, 05:37 PM
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# 16 heads
Have #16 heads on my 66 GTO. It's been apart for a while and when I installed the heads on the engine I discovered I had 4 stud type head bolts in the mix...I simply put one on each coroner of the head outside the valve cover thinking something may be hung there when I got into the complete install of the engine accessory parts later.... I'm thinking now that they may be on the inside of the valve cover for some reason....any thoughts?
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#2
05-17-2015, 06:50 PM
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2 on the inside of each head for the oil deflector and two on the outside of the LH head one for the neg cable and one for starter wiring tube.
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#3
05-18-2015, 06:51 PM
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thanks for the info.... I don't think I have an oil deflector in my #16 heads....do you know what they look like ? and Can I get them on line somewhere?
would post a picture of my heads before install...but can't figure out how to..........sorry Last edited by GTOEARL; 05-18-2015 at 07:04 PM. |
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#4
05-18-2015, 07:32 PM
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If you're using the later OEM stock valve covers with the welded on deflectors already in the covers than I don't think you even need these..........if not then you should. Lo-po 2bbl engines may not have used them at all not too sure.
I think these mount with 3 studs not two as I mentioned before. 1973 Pontiac started using valve covers with what Pontiac called oil deflectors "fingers" spot welded inside the valve covers. Last edited by abefromen; 05-18-2015 at 07:39 PM. |
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#5
05-18-2015, 07:35 PM
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Well...
any Pontiac parts vendor worth his salt has at least two sets lying around! LOL...I was giving them away. Came on GTO, Firebird and GP 400s in place of the "drippers" welded to the inside of painted covers. Chrome covers don't have the drippers. Sorry...no pix but I'm sure some will pop up here soon. No biggie...I'm sure. Good luck.
__________________
"The great obstacle to discovery is not ignorance...but the illusion of knowledge." Daniel J. Boorstein "Gas is STILL your cheapest thrill!" Your opinion of me is none of my business. |
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#6
05-18-2015, 07:37 PM
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I would like to send a picture....Do you know how to upload a picture?
I just realized something.....These #16 heads are on my 66 389 gto.......I'm a little anal on wanting my GTO to look correct as much as possible....so, I'm using 66 hump valve covers with 5/8" gaskets....so I'm thinking the oil drippers would not work for me...is this correct assumption... Last edited by GTOEARL; 05-18-2015 at 07:44 PM. |
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#7
05-18-2015, 07:42 PM
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Quote:
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#8
05-18-2015, 07:43 PM
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Quote:
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#9
05-18-2015, 07:50 PM
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Here you go...what do you think... |
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#10
05-18-2015, 08:07 PM
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Deflector/drippers for pre-67 heads will work. They are a bit different due to the valve angle difference. Again, not sure all engines used them.
#16 heads on a 389? What pistons you using? The 8VR's? Stock 400 pistons if .060 over? Last edited by abefromen; 05-18-2015 at 08:14 PM. |
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#11
05-18-2015, 08:14 PM
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using Sealed Power Speed Pro 411np...bored the 389 out to 400...
Do you think I need the drippers...just read some other blogs and people are slit on the need for them.... where can I find some that will fit into a 66 valve cover... or should I modify the 400 valve cover ones.... Had KB hypereutectics and had two broke at the skirts... |
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#12
05-18-2015, 08:25 PM
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Quote:
Not a question of fitting the valve cover I think its a question of clearing the valve angle on the pre 67 heads. If you're using thicker valve cover gaskets the 400 drippers/deflectors should work I think. Im no expert on all this so someone with more knowledge may correct me. |
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#13
05-18-2015, 08:44 PM
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Quote:
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#14
05-18-2015, 08:51 PM
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Just 4 of many, many threads about 'em. Do an archive search for the part number and you'll find tons more.
http://forums.maxperformanceinc.com/...&highlight=8vr http://forums.maxperformanceinc.com/...&highlight=8vr http://forums.maxperformanceinc.com/...&highlight=8vr http://forums.maxperformanceinc.com/...&highlight=8vr |
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#15
05-18-2015, 09:08 PM
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X2 with Abe, I wouldn't even use those as a paperweight. It will cost more money, but will save you hours upon hours of headache and trouble down the road. Besides that, a better forged piston will give you much more power and your engine will run better, cool better and be much more efficient.
__________________
1967 GTO, 432 (428+.030), 4-bolt mains, factory Nodular crank, scat rods, icon dished pistons, Lunati HR 243/251@.050, .618/.622 lift, Edelbrock 72cc round port heads, 10.5:1, offy 2-4 intake, Edelbrock 650cfm carbs, Super T10 trans (2.64 first), BOP 10 bolt w/ Eaton posi and 3.36 gears |
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#16
05-18-2015, 09:20 PM
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Thanks for the info and education guys...Don't know what to say now...the motor is in and will be running in a few weeks given my schedule.... I do have the 411np sealed power pistons with the eight reliefs. Hopefully with the #16 heads with the 2.11 intakes will help.....It's been bored .060 over to a 400 cid. I know with standard flat top pistons the compression ratio was a bout 10.50 to 1, I believe....Can anyone give me an educated guess on what my compression is now..... I believe the heads are 72 cc..
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#17
05-19-2015, 09:45 PM
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Not sure if this will be useful or not....
The oil deflectors were on the 093 heads on my 66 389 WT engine. Not sure the 16 heads even used them. Were 16 heads even used on the 66 GTO's 389 WT engines? I've no idea so that's the reason I'm asking.
__________________
 Gary Get in, ShuT Up, Hang On! Member of the Baltimore Built Brotherhood MY GTO built 4th Week of March 1966 "Crusin' Is Not A Crime" Keep yer stick on the ice. |
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#18
05-19-2015, 11:07 PM
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Quote:
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#19
05-20-2015, 04:53 PM
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As for the pistons, I put a set of these in my 400 I built for my 73 Formula, without knowing the drawbacks. I had the engine assembled before I found out. New pistons and potentially additional machine work as well just wasn't an option. The car runs and cools fine with them. I am probably giving up some horsepower, but it's a street car anyway, not a race car where I need to squeeze every last hp out of it....
Importsmasher
__________________
Scott Baggiore 66 GTO convertible 389/4 speed (parents bought new) 73 Firebird Formula 400/4 speed 74 GTO 455/4 speed 74 Grand Am |
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#20
05-20-2015, 08:20 PM
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Quote:
__________________
Gary Get in, ShuT Up, Hang On! Member of the Baltimore Built Brotherhood MY GTO built 4th Week of March 1966 "Crusin' Is Not A Crime" Keep yer stick on the ice. |
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