455 olds

[TAPPED OUT]

Does anyone know if they make any kind of heat riser block off's or plugs for a olds 455 intake. I have some on my BB chevy but they came with my gasket kit. I havent been able to figure out what to use to do on a olds. :confused:

[PANTHERJET]

There are 2 options that I have used first Mondello sells a cast iron plug that has to be ground and fit to you heads easiest and cheapist second remove heads and valves and poor molten zinc alloy in through the exhaust port will the head is on a flat surface and then port the runners
Thats the only two I have found that work

[Jetaholic]

If it's a typical screw in type of plug, most manifolds are tapped for a pipe plug.
Go to a hardware store and buy a few different sizes, and try them out.
Oops...I feel stupid. For some reason I thought he was talking about the pipe plugs you typically install in the runners and water crossover in the intake manifold. :D

[kp216]

Third option - I have a 403, but this is what I did.
Edelbrock Performer non-egr intake. Once the intake surface was clean on the heads, I cut a piece of stainless heat shield material big enough to cover the egr ports on the heads, along with holes cut for one bolt on each side of the port. I don't remember what the thickness of the heat shield material was, but it was about the thickness of, or slightly less than, a sheet of paper.
I then used a little gasket cinch on the stainless and put it in place on the heads, then good Ultra gaskets and everything back together as normal.
It's been two years now and no leaks.

[75MillerJet]

Well if remember correctly the Edel Performer intakes don't have the port for the exhaust crossovers (or am i thinking of the Felpro gasket set?) so kp216's idea seems perfect. I myself went with the cast plugs from edelbrock. I had to grind them and shape them to fit snug and flush in the port holes. I also put on a set of Felpro rubber gaskets which like i said before, don't have the holes for the crossovers. No problems here. Then again I don't have that boat anymore. :D

[TahitiTiger]

I used Mondello's Jet boat green intake gaskets. As I recall they do not have the hole in them, and neither did my Performer.
edit: called Mondello, no hole in there boat application gaskets

[TAPPED OUT]

I tried those mondello gaskets and they just blew holes through the gasket. I took the heads off I found they need a overhaul, so instead of rebuilding these stock heads that dont even let the excess oil leave the head I ordered some edelbrock performer heads that dont have an exhaust riser port and are allot more modernized than the stock.

[TahitiTiger]

I tried those mondello gaskets and they just blew holes through the gasket. I took the heads off I found they need a overhaul, so instead of rebuilding these stock heads that dont even let the excess oil leave the head I ordered some edelbrock performer heads that dont have an exhaust riser port and are allot more modernized than the stock.
nice, :D I eventualy want to get the proper heads back on my boat. Are you using the oil restrictors in the main journels as well? along with the restricted push rods? Also I elongated the oil return hole the front of the block. :)
What do you plan on doing with your old heads? Are they "J" code heads?

[TAPPED OUT]

I am not using no restrictors on the journals or the restricted pushrods. I was told that these edelbrock heads will let the oil return like it should out of the head.
The castings on these stock heads are "F".

[malcolm]

Those heads are really Fs? They're worth money to collectors. Seen them go for over a grand on Ebay. ;)

[TAPPED OUT]

I dont know what they are worth I have never seen any on ebay. I dont plan on selling them but if they are worth a grand I would!

[malcolm]

They're worth enough that guys will pick up E heads and carefully grind off the bottom leg to make Fs. ;) Ds are worth even more (I think the last set of those on eBay went up to $1500). They were the factory heads on the W-30 455s that were in early 70s 442s.

[maxwedge]

So what do you think a set of "rare" Ka heads will sell for:D

[malcolm]

Nope, car guys don't want those. Just Ds and Fs. Sorry. ;)

[DelawareDave]

So what do you think a set of "rare" Ka heads will sell for:D
I'm surprised the K/Ka heads aren't worth as much as the C heads. They have big valves, hardened seats, no emissions bumps to remove, and they actually flow as good as the C heads. There are probably not as many available, or they have been thrashed due to being in a marine environment. And GM sold them as direct replacements for the W30 heads.

[nyjetboat]

summit sells the block off pluggs part no edl-2733 for the performer intake these go in the intake side .not in the heads price 10. 69

[malcolm]

I'm surprised the K/Ka heads aren't worth as much as the C heads. They have big valves, hardened seats, no emissions bumps to remove, and they actually flow as good as the C heads. There are probably not as many available, or they have been thrashed due to being in a marine environment. And GM sold them as direct replacements for the W30 heads.
But the KA heads weren't factory on the W-30s. And factory hardened seats don't last past the first valve grind anyway.
Only reason the Cs got popular was because Modello 'claimed' they were the best flowing head. :rolleyes:
Another myth is the AIR bumps in the exhaust ports. Flow bench testing has proven it actually hurts them to be ground off. :jawdrop:

[malcolm]

Here's a rebuilt set of F heads on Ebay.
http://cgi.ebay.com/ebaymotors/F-heads-1970-W30-442-Oldsmobile-ram-air-404-438_W0QQitemZ170092983875QQcategoryZ140686QQrdZ1QQ cmdZViewItem

[malcolm]

Holy crap! Look at that eBay link! Ha-ha!
$6,798.00 !!!!!!!!!!!!

[Taylorman]

wtf is wrong with him. iron heads for that $$$$$$$$$$$$$

[TAPPED OUT]

Thats some b/s you need your head examined if you are going to pay that kind of money for stock iron Oldsmobile heads, I dont care what joe mondello says!

[malcolm]

Someone must be going for a show winning W-30 442.

[Taylorman]

Someone must be going for a show winning W-30 442.
I'd be runnin some alum bling for a show winning Olds motor.

[Taylorman]

Check out this olds bling.
http://i20.photobucket.com/albums/b218/PUMPkin455/PUMPkin/19-drivelinecoverbackplate.jpg
http://i20.photobucket.com/albums/b218/PUMPkin455/PUMPkin/23-drivelinecoverbackplate.jpg
http://i20.photobucket.com/albums/b218/PUMPkin455/PUMPkin/22-drivelinecoverbackplate.jpg
http://i20.photobucket.com/albums/b218/PUMPkin455/PUMPkin/33-drivelinecoverbackplate.jpg
http://i20.photobucket.com/albums/b218/PUMPkin455/PUMPkin/test080.jpg
http://i20.photobucket.com/albums/b218/PUMPkin455/PUMPkin/test077.jpg
http://i20.photobucket.com/albums/b218/PUMPkin455/PUMPkin/test086.jpg

[TahitiTiger]

maybe I will post some pics of my olds later :) Just bought a Mothers Power Ball! Gonna attack my nasty lookin intake manifold :devil:

[Taylorman]

I need to take some more pictures of mine but here is some older pictures.
http://i22.photobucket.com/albums/b334/vidrinek/Boat/DCP_6678.jpg
http://i22.photobucket.com/albums/b334/vidrinek/Boat/DCP_6679.jpg
http://i22.photobucket.com/albums/b334/vidrinek/Boat/100_1438.jpg
http://i22.photobucket.com/albums/b334/vidrinek/Boat/100_1253.jpg
http://i22.photobucket.com/albums/b334/vidrinek/Boat/100_1251.jpg
http://i22.photobucket.com/albums/b334/vidrinek/Boat/DCP_6287.jpg
http://i22.photobucket.com/albums/b334/vidrinek/Boat/DCP_6286.jpg
http://i22.photobucket.com/albums/b334/vidrinek/Boat/DCP_6285.jpg
http://i22.photobucket.com/albums/b334/vidrinek/Boat/DCP_6143.jpg
http://i22.photobucket.com/albums/b334/vidrinek/Boat/DCP_6136.jpg

[DelawareDave]

Hey Taylorman- looks like you changed the Victor intake for something different. You can send it my way, if you aren't using it! :D

[Taylorman]

Changed to a Victor with a Dominator flange