Head gasket Recommendations

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rod7515

rod7515

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Ive got a stroked 408 in my Dart. When I decided on building this car I made up my mind to use a 2x4 setup. However I wanted to start the engine with a single 4 bbl just to avoid any issues at startup. Ive gotten evrything else tackled including the overheating I was having so im thinking it might be time to install the 2x4 setup along with the edelbrock heads I bought and had reworked. So I was wondering what is the best head gasket to use with the aluminum heads? My compression was 10.5:1 and I know it will increase some with the new heads.
Suggestions? Is there a kit that would have the intake and valve cover gaskets as well?
Thanks Rod
 
Not know anything about what you got for an engine since you did not give us any details...
Fel Pro 1008 head gasket and Edelbrock 7276 intake gasket..
 
70aarcuda, Its a 360 bored .030 and stroked to a 408. The compression with the steel heads is 10.5:1. The cam is a comp cam solid roller with a .575 lift on both valves. The edelbrock heads have the oversized 2.02 and 1.90 I think. the intake will be the old TR5 with the lower upper plantum and the carbs will be the holley 600 performance. Running TTI headers with 3" exhaust. Automatic trans and 4000 converter.
Rod
 
rod7515 said:
70aarcuda, Its a 360 bored .030 and stroked to a 408. The compression with the steel heads is 10.5:1. The cam is a comp cam solid roller with a .575 lift on both valves. The edelbrock heads have the oversized 2.02 and 1.90 I think. the intake will be the old TR5 with the lower upper plantum and the carbs will be the holley 600 performance. Running TTI headers with 3" exhaust. Automatic trans and 4000 converter.
Rod
Click to expand...
Which iron heads?
 
Since we're spending your money here;
  1. O-Ring the cylinders
  2. Copper gaskets
:poke:

Some would call it overkill...
Others would say that there is no such thing, just reload and keep firing.

Yes, I am being something of a smartass, but at the same time remember, there as many opinions as responders.

By the way, o-ringing is probably ridiculous overkill, like using a Cray supercomputer to play pong. But it will still do the job.

 
toolmanmike, they are 915J heads with oversized valves. I had them reworked and they were already ported when I got them. Why do you ask?
Rod
 
I love just dialing in a combo to then immediately change it. Wink wink

New beginnings, 1008 @.039 thick or 8553 @.046 thick or the sd521 @.054 thick felpro gaskets work fine.
 
FelPro 8553 aren’t designed to handle the OPs 10.5CR.
They are recommended for a stock type rebuild, they blow... lol pun intended!

FelPro 1008 are a great choice.
 
1AD03A76-7312-4786-8092-5D9D318B576E.jpeg
j par said:
Pictures??...:popcorn:..
Click to expand...

This is what I’m running as I have upto 10PSI of Roots boost and an additional 175HP shot of N2O.
 
rod7515 said:
70aarcuda, Its a 360 bored .030 and stroked to a 408. The compression with the steel heads is 10.5:1. The cam is a comp cam solid roller with a .575 lift on both valves. The edelbrock heads have the oversized 2.02 and 1.90 I think. the intake will be the old TR5 with the lower upper plantum and the carbs will be the holley 600 performance. Running TTI headers with 3" exhaust. Automatic trans and 4000 converter.
Rod
Click to expand...
OP, no one can give you solid advice without:
  • a piston PN or a kit PN in which the pistons were included
  • the original head type (OK, I see they are 915's; that is answered)
  • the original block type (LA or Magnum).
  • was the block deck milled at all
  • what fuel are you going to use
  • Edelbrock head PN
  • Cam PN
We can work from the 10.5 static CR, but that tends to have some degrees of assumption in it. Your big potential problem is not the head gasket, but that fact that if you are changing from standard LA360 open-chamber iron heads to Edelbrock closed chamber heads, your static CR will jump up around a full point, maybe a bit more. If the cam is too small for that, then you will run into possible detonation with certain fuels (like pump premium).

So can we back up first and get those questions answered?

And, is this engine/car exclusively for drag racing, or for what use?
 
rod7515 said:
Ive got a stroked 408 in my Dart. When I decided on building this car I made up my mind to use a 2x4 setup. However I wanted to start the engine with a single 4 bbl just to avoid any issues at startup. Ive gotten evrything else tackled including the overheating I was having so im thinking it might be time to install the 2x4 setup along with the edelbrock heads I bought and had reworked. So I was wondering what is the best head gasket to use with the aluminum heads? My compression was 10.5:1 and I know it will increase some with the new heads.
Suggestions? Is there a kit that would have the intake and valve cover gaskets as well?
Thanks Rod
Click to expand...
My dirt motor originally was built with orings and copper headgaskets. 13-1.

Ist repair it got FelPro 1008.

This rebuild it's getting thin Cometics for more squeeze.
 
Thanks everyone, I'm going to be purchasing the felpro 1008. They should work fine. I think sometimes we try to go way to deep into things.
Thanks Rod
 
So you know that going from 10.5 static CR to a full point higher will not result in detonation? I don't see where you have that info.

Not trying to make your life harder... just trying to save you from grief.
 
nm9stheham said:
So you know that going from 10.5 static CR to a full point higher will not result in detonation? I don't see where you have that info.

Not trying to make your life harder... just trying to save you from grief.
Click to expand...

A really big cam, maybe?
If you can't drive it on the street, they have higher octane levels at the track pumps...
 
pick the rev range
pick the torque curve
then pick the cr and lca which can be wider with more cr
 
Ottmundr said:
A really big cam, maybe?
If you can't drive it on the street, they have higher octane levels at the track pumps...
Click to expand...
Could very well be ... but we don't know where this thing is for cylinder pressures. Head gaskets is later on near the end of the list of things to pick.
 
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