Stealth Heads with stock rocker arms??

[cougs]

All,
After much debate, I finally took the plunge and decided to upgrade to stealth heads on my 383.  I've seen the earlier problems with the 7 degree retainers and see that they are now running comp cams parts so I feel better.

I have a question, can I still run my stamped steel rocker arms?  I like the idea of having some adjustability in the rocker arms for setting lifter preload.  The block hasn't been decked.

I will be running a 262 Lunati Voo Doo, Mancini hardened rods (stock length), with Johnson lifters.

[cdr]

yes you can run stock rockers on that set up.

[Cooter]

That's why I like these heads. They appear original, don't have to run stupid crazy, insanely priced, T&D rockers, and no external oiling.

[cougs]

So, I've never installed rocker arms on a BB mopar (only pedestal type rocker arms  - don't ask).  Do I just bolt down the rocker arm shaft, confirm there isn't slop in the pushrods, and go with it?

[cougs]

Also, how does the top of the head get lubricated?  The pushrods don't have an oil passage.....   

[cudaken]

Also, how does the top of the head get lubricated?  The pushrods don't have an oil passage.....   

Through the rocker shafts.

Do you have any flow number on the heads and how much where they?

Cuda Ken

[cougs]

Also, how does the top of the head get lubricated?  The pushrods don't have an oil passage.....   

Through the rocker shafts.

Do you have any flow number on the heads and how much where they?

Cuda Ken

Oh, that makes sense.  They had some flow numbers on their site but I don't recall what they were.  $550/each for assembled heads with free shipping

[BSB67]

All,
After much debate, I finally took the plunge and decided to upgrade to stealth heads on my 383.  I've seen the earlier problems with the 7 degree retainers and see that they are now running comp cams parts so I feel better.

I have a question, can I still run my stamped steel rocker arms?  I like the idea of having some adjustability in the rocker arms for setting lifter preload.  The block hasn't been decked.

I will be running a 262 Lunati Voo Doo, Mancini hardened rods (stock length), with Johnson lifters.

You should seriously consider these for your 383:

http://www.edelbrock.com/automotive/mc/cylinder-heads/chrysler/e-street-bb.shtml

[1974dodgecharger]

Love the Edelbrock heads...I have a RPM heads in mine...love em.

All,
After much debate, I finally took the plunge and decided to upgrade to stealth heads on my 383.  I've seen the earlier problems with the 7 degree retainers and see that they are now running comp cams parts so I feel better.

I have a question, can I still run my stamped steel rocker arms?  I like the idea of having some adjustability in the rocker arms for setting lifter preload.  The block hasn't been decked.

I will be running a 262 Lunati Voo Doo, Mancini hardened rods (stock length), with Johnson lifters.

You should seriously consider these for your 383:

http://www.edelbrock.com/automotive/mc/cylinder-heads/chrysler/e-street-bb.shtml

[cougs]

All,
After much debate, I finally took the plunge and decided to upgrade to stealth heads on my 383.  I've seen the earlier problems with the 7 degree retainers and see that they are now running comp cams parts so I feel better.

I have a question, can I still run my stamped steel rocker arms?  I like the idea of having some adjustability in the rocker arms for setting lifter preload.  The block hasn't been decked.

I will be running a 262 Lunati Voo Doo, Mancini hardened rods (stock length), with Johnson lifters.

You should seriously consider these for your 383:

http://www.edelbrock.com/automotive/mc/cylinder-heads/chrysler/e-street-bb.shtml

I've head good things lately about the stealth heads and I like the stock look.  Price difference funded my cam and lifters too.

[don duick]

I have stock rockers on my stealth heads preload was way out so I bought a set of crane adjustable pushrods.

[BSB67]

All,
After much debate, I finally took the plunge and decided to upgrade to stealth heads on my 383.  I've seen the earlier problems with the 7 degree retainers and see that they are now running comp cams parts so I feel better.

I have a question, can I still run my stamped steel rocker arms?  I like the idea of having some adjustability in the rocker arms for setting lifter preload.  The block hasn't been decked.

I will be running a 262 Lunati Voo Doo, Mancini hardened rods (stock length), with Johnson lifters.

You should seriously consider these for your 383:

http://www.edelbrock.com/automotive/mc/cylinder-heads/chrysler/e-street-bb.shtml

I've head good things lately about the stealth heads and I like the stock look.  Price difference funded my cam and lifters too.

Yes, but your 383 will perform better with the increased compression ratio afforded by the smaller combustion chamber heads.

[cougs]

All,
After much debate, I finally took the plunge and decided to upgrade to stealth heads on my 383.  I've seen the earlier problems with the 7 degree retainers and see that they are now running comp cams parts so I feel better.

I have a question, can I still run my stamped steel rocker arms?  I like the idea of having some adjustability in the rocker arms for setting lifter preload.  The block hasn't been decked.

I will be running a 262 Lunati Voo Doo, Mancini hardened rods (stock length), with Johnson lifters.

You should seriously consider these for your 383:

http://www.edelbrock.com/automotive/mc/cylinder-heads/chrysler/e-street-bb.shtml

I've head good things lately about the stealth heads and I like the stock look.  Price difference funded my cam and lifters too.

Yes, but your 383 will perform better with the increased compression ratio afforded by the smaller combustion chamber heads.

I'll be right at 10:1 now with the 80 cc heads.   

[BSB67]

All,
After much debate, I finally took the plunge and decided to upgrade to stealth heads on my 383.  I've seen the earlier problems with the 7 degree retainers and see that they are now running comp cams parts so I feel better.

I have a question, can I still run my stamped steel rocker arms?  I like the idea of having some adjustability in the rocker arms for setting lifter preload.  The block hasn't been decked.

I will be running a 262 Lunati Voo Doo, Mancini hardened rods (stock length), with Johnson lifters.

You should seriously consider these for your 383:

http://www.edelbrock.com/automotive/mc/cylinder-heads/chrysler/e-street-bb.shtml

I've head good things lately about the stealth heads and I like the stock look.  Price difference funded my cam and lifters too.

Yes, but your 383 will perform better with the increased compression ratio afforded by the smaller combustion chamber heads.

I'll be right at 10:1 now with the 80 cc heads.  

Really?  Care to share the details?  It certainly can be done, but there aren't many paths you can take to get there.

[firefighter3931]

The stock rocker shaft system will work fine on a Stealth/RPM head casting but with an 84cc chamber you won't be at 10:1 on a 383 cubed build. Some head surfacing will be required to reduce the chamber volume. 

BSB67 is leading you down the right path 


Ron

[cougs]

What's the chamber volume on stock 906 heads?

[BSB67]

What's the chamber volume on stock 906 heads?

90 cc.  Not sure if that matters though.  Do you have and original, unaltered, never been rebuilt 383?  What you need to know the piston part number, and/or the measured compression distance, and the intended head gasket thickness.

[cougs]

What's the chamber volume on stock 906 heads?

90 cc.  Not sure if that matters though.  Do you have and original, unaltered, never been rebuilt 383?  What you need to know the piston part number, and/or the measured compression distance, and the intended head gasket thickness.

The engine is rebuilt with the stock (original pistons).  My dad bought this car in 1970 and the engine only had 70,000 on it when we rebuilt it in the late 90s (It sat from 1982 to 1999 in my grandma's barn).  We re-ringed it, removed a slight ridge in the cylinders, put in new bearings, balanced it, new timing chain, hardened valve seats, etc.  The block and heads didn't need to be decked.  It's a basic rebuild but the engine is about as close to original as you can get.  Being that the car wil stay in the family we wanted to leave plenty of cylinder walls for future rebuilds.  I don't know what head gasket is in it now but it was part of the gasket kit.  The gasket I'll be using is a Fel--Pro 1009. 

I know the stock 383 HP has about 9.5:1 compression even though it was rated at 10:1.  Any idea what my new compression will be?  When I calc'd it I got right at around 10:1 when going from a chamber of 90cc to 82cc.

[BSB67]

What's the chamber volume on stock 906 heads?

90 cc.  Not sure if that matters though.  Do you have and original, unaltered, never been rebuilt 383?  What you need to know the piston part number, and/or the measured compression distance, and the intended head gasket thickness.

The engine is rebuilt with the stock (original pistons).  My dad bought this car in 1970 and the engine only had 70,000 on it when we rebuilt it in the late 90s (It sat from 1982 to 1999 in my grandma's barn).  We re-ringed it, removed a slight ridge in the cylinders, put in new bearings, balanced it, new timing chain, hardened valve seats, etc.  The block and heads didn't need to be decked.  It's a basic rebuild but the engine is about as close to original as you can get.  Being that the car wil stay in the family we wanted to leave plenty of cylinder walls for future rebuilds.  I don't know what head gasket is in it now but it was part of the gasket kit.  The gasket I'll be using is a Fel--Pro 1009. 

I know the stock 383 HP has about 9.5:1 compression even though it was rated at 10:1.  Any idea what my new compression will be?  When I calc'd it I got right at around 10:1 when going from a chamber of 90cc to 82cc.

Now we're getting somewhere.

The factory original piston will be about 0.005" below the un-cut factory deck (within a few thousandths).  You pretty much need to run a .040 head gasket anyway.  Much less you could have piston to head contact.  So, with 80 cc chambers, you'll be at about 9.6:1 CR.  Not bad at all for the cam you are considering.

[heyoldguy]

Before you bolt the Stealth head on, lay the 1009 gasket on the head and make sure it doesn't overhang the combustion chamber. It shouldn't, but it may be very close. The 1009 is a smaller diameter than the 8519PT1 which would have no problem on the Stealth head. I use the 1009 if I'm going above 12:1 compression and the 8519PT1 up to 12:1.