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#1
12-28-2020, 12:46 PM
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Can someone identify things for me
Looking at info on these heads and manifolds. Manifolds I assume are regular factory ones. Curious on the heads which were supposed to be "worked" these pics were sent to me from previous builder from when the motor was assembled probably 10 years ago.
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#2
12-28-2020, 01:04 PM
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Looks like 16 D port heads a "72"cc chamber head. Intake is a later 75-79 EGR manifold. Exhaust manifolds RA/HO for D ports
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
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#3
12-28-2020, 01:06 PM
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LOOKS LIKE A STOCK REBUILD ON A SET OF LOW PERFORMANCE HEADS.
The ports do not look like they have had even a port match on them The Heads have press in rocker studs and bolts to hold the guide plates to the heads Stock Oil Shields and stock diameter springs assumed Engine does have Ram Air D-Port exhaust manifolds. Picture does not show the casting number on the 2 center exhaust ports well. Not sure where the "Worked" comes in. Looks like a stock rebuild engine to me with some bolt on stock parts. Intake is a later model EGR intake and the heads are not later "EGR Heads" Can't read casting numbers from photo. Tom V.
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"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
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#4
12-28-2020, 01:19 PM
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Those pictures are not the best for doing detective work from, but I take a shot at it!
The heads are 1969 casting number 16, and since your pictures show pressed in rocker studs they started life as the 2 bbl small valve heads, can't say if there where remachined for the standard 4 bbl size valves which is common, and since that are/ where 2 bbl heads they are NOT the high compression 72 cc versions. The intake manifold is a stock smog unit and not the best in terms of max HP. The Rods are aftermarket H beam type and should be good for atleast 600 hp. The block looks to be a 400 that may have been assembled wrong because of the main cap with with the windage tray mounting pads in on number 3 , when the number 2 and 4 main cap should have the mounting pads The other possiblity is that this a a late 400 block when they did away with the windage tray which means only the top of the number 2 main cap has mountings pads which where used to mount the dip stick tube bracket, a job that the windage tray used to do! It hard to be sure, but the oil pump looks like the needed 60 lb pump, but the braising job to hold the pick up on is done like crap and is excessive! The motor has ram air type Exh Manifolds. The center of the lifter valley above the Cam can at times tell you the cid of the motor, as in 35 being a 350 block, 0O is a 400, 28 would be a 428 and 55 would be a 455. Note that heads with pressed in studs should not be used with lifts over .450" ( especially with stock springs) and with poly locks for valve adjustments!
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! Last edited by steve25; 12-28-2020 at 01:32 PM. |
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#5
12-28-2020, 01:28 PM
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Quote:
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#6
12-28-2020, 01:34 PM
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Square cheeks on center or crank 455? I totally forget what a 400 crankshaft is like there.
Wouldn't #16 heads have screw in studs?
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A man who falls for everything stands for nothing. |
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#7
12-28-2020, 01:47 PM
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My guess is it’s a 428 360 hp engine 16 heads with press in studs and the block has the lug on rear so we know it’s not a 400 or 350. The date codes and block stamping would give you the answer.
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#8
12-28-2020, 01:56 PM
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Probably 1970 small valve 400 heads that had press in studs, I’m thinking 80cc chambers. Not at all a bad head, the ports are essentially the same as the big valve 16 heads. The press in studs kind of limit the ability to run cams with higher lifts and spring pressure but will suffice for milder lower lift street cams if not pushed too hard.
The iron EGR intake is a fine street performance intake. The Ram Air / HO exhaust manifolds are a nice upgrade from the standard log-type manifolds.
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1964 Tempest Coupe LS3/4L70E/3.42 1964 Le Mans Convertible 421 HO/TH350/2.56 2002 WS6 Convertible LS1/4L60E/3.23 |
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#9
12-28-2020, 02:01 PM
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Looking at the picture of the block casting number last numbers look like ***428 I think, it’s hard to see but that would make it a 455. Can anyone else see that picture any better?
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#10
12-28-2020, 02:06 PM
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If they are 1969 428 16 heads they are small valve heads that’s why you need date codes.
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#11
12-28-2020, 02:29 PM
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It's not a 428 crankshaft due to the square center cheeks, 428' are round there
That's an easy way to identify a larger journal 428/455 crank without measurements or part number
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A man who falls for everything stands for nothing. |
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#12
12-28-2020, 02:32 PM
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Block has the pyramid on it so, it`s not a 400. Looks like a 455. `69 360 hp 428`s had 46 heads, so they are most prolly `70 16 400 2bbl heads.
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#13
12-28-2020, 03:05 PM
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The other thing I noticed is it’s not drilled for four bolt main. The only other 3.25 block I have seen personally not drilled was a 72 455 block.
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#14
12-28-2020, 03:36 PM
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The block is a 455 with casting #485428, the crank is a 455 also with the squared cheek.
The head can be ID if you tell us what the 2 digits are on the center exhaust ports. Possibly a #11 or even #16. (or couple others) Not sure why they used the 2 bbl heads or small valve heads. Not that hard to find some better heads. Especially with the exhaust manifolds used. (worth more than the heads) On the front of the block, passenger side below where the head mounts will be some numbers and letters. Tell us what they are and it can be determined closer to what the block is. 
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John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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#15
12-28-2020, 03:45 PM
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I looked at the drivers head and I see 5 2 stamped in the middle, but can't find anything other than a 5c code online
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#16
12-28-2020, 03:48 PM
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Hell maybe it says 62 idk lol my eyes aren't the best at competing with rust and old paint
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#17
12-28-2020, 03:52 PM
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Found this casting number
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#18
12-28-2020, 04:00 PM
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The more I look at it, it seems like a 455 with 2 different heads on it. A 15 and a 62?
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#19
12-28-2020, 04:02 PM
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Quote:
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#20
12-28-2020, 05:09 PM
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Quote:
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