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rhs heads

Posted By: GARAGEMAN

rhs heads - 03/09/11 03:56 PM

Hello, This is a dumb Question what is a rhs head, and what did they come on? I have a newer style 360 magnum engine they tell me that it has the swirl port heads on it.Are they the same as a rhs?What does rhs stand for?
Posted By: Pntastar69

Re: rhs heads - 03/09/11 04:03 PM

http://www.racingheadservice.com/
Posted By: GARAGEMAN

Re: rhs heads - 03/09/11 04:09 PM

Thanks,Are swirl port heads any good? They tell me that swirl port flow well.
Posted By: POS Dakota

Re: rhs heads - 03/09/11 04:21 PM

Quote:

Thanks,Are swirl port heads any good? They tell me that swirl port flow well.



the RHS head comes in LA and magnum style and is the best smallblock head for the price PERIOD.

here is a pic of my magnums before they went on my 408....
Posted By: GARAGEMAN

Re: rhs heads - 03/09/11 04:24 PM

SO I take it swirl stock heads are not the way to go
Posted By: POS Dakota

Re: rhs heads - 03/09/11 04:26 PM

Quote:

SO I take it swirl stock heads are not the way to go



Depends on what you want to do.
The stock head is NOTHING compared to the rhs head.

Mine!

Attached picture 6520117-POSDakotaRHSheads.jpg
Posted By: GARAGEMAN

Re: rhs heads - 03/09/11 04:29 PM

I bought a 408 stroker at jegs it runs well but I want more. The add said It has swirl port heads, and 375hp
Posted By: GARAGEMAN

Re: rhs heads - 03/09/11 04:33 PM

nice looking heads I wish they were mine. How much?
Posted By: POS Dakota

Re: rhs heads - 03/09/11 04:36 PM

Quote:

I bought a 408 stroker at jegs it runs well but I want more. The add said It has swirl port heads, and 375hp



The rhs head will support well over 500 hp with the right cam and compression. WITH NO PORTING.
Posted By: POS Dakota

Re: rhs heads - 03/09/11 04:39 PM

Quote:

nice looking heads I wish they were mine. How much?



There is a member on here that goes by ou812. His name is Brian. He owns IMM engines and I believe he can supply these with 2.02 valves, springs and everything except rockers for around 1400 bucks. And at that price they are a far better deal than anything else on the market.

http://www.immengines.com/

All the info you need is right there and Brian is a great guy to deal with. There is a dedicated section to the RHS head on that site.

I'll leave this alone now...he shoudl see it and clarify if I made any error.
Posted By: GARAGEMAN

Re: rhs heads - 03/09/11 04:40 PM

IF I put those heads on my 408 stroker engine with 375 hp. what would the estimated hp be?
Posted By: patrick

Re: rhs heads - 03/09/11 06:55 PM

I presume it's a blueprint engines crate motor? if so, it should have OEM magnum heads...cam looks to be a MP .474" cam. a cam change to a comp XE285HL with a spring change to hughes #1110 with hughes retainers would probably open up a lot of power...

that said, the RHS head flow ~25-30 cfm better than OEM magnums, so I'd swagger with no other changes you'd see a 40HP increase with the heads. the cam is the limiting factor right now, IMHO.
Posted By: 540challenger

Re: rhs heads - 03/09/11 08:44 PM

Quote:

I presume it's a blueprint engines crate motor? if so, it should have OEM magnum heads...cam looks to be a MP .474" cam. a cam change to a comp XE285HL with a spring change to hughes #1110 with hughes retainers would probably open up a lot of power...

that said, the RHS head flow ~25-30 cfm better than OEM magnums, so I'd swagger with no other changes you'd see a 40HP increase with the heads. the cam is the limiting factor right now, IMHO.

The cam is a comp grind it has a split duration. Correct they use oem magnumheads however the block is an LA style not a magnum "directed to the OP". Best thing to do before you evenpurchase heads for this engine is tear it down. I along with other members of this board have had and found many problems with this engines.

Heads came with stock springs and worn out guides. Even though advestised for matching springs.

The piston rings have been found to be the wrong sizes installed.

Plus the fact they don't stand by their warranty.

If the motor was built correctly to begin with it should have been close enough a tad over a 400hp engine.

that said the RHS head are a great upgrade
Posted By: Brian Hafliger

Re: rhs heads - 03/09/11 08:46 PM

Quote:

IF I put those heads on my 408 stroker engine with 375 hp. what would the estimated hp be?



It all depends on how the heads you have on it now compare...
If they are magnum heads already, about 30HP...if they are early LA heads, about 40-45HP easy.
Oh, and thanks Carmine (POS)!
Brian
Posted By: GARAGEMAN

Re: rhs heads - 03/10/11 04:11 AM

Hello all,Thanks for all the help.The blueprint engine has never gave me any problems yet.no smoke valve noise, no nothing.It has been in my dart for 3years. anyways a set of rhs heads and a new comp cam and springs sould be around 425hp.I live close to shady dell so i will call him tomorrow to see what kind of deal he can give me I let everyone know. Any input on shady dell
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