Re: rhs heads
[Re: GARAGEMAN]
#947054
03/09/11 12:21 PM
03/09/11 12:21 PM
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Joined: Dec 2009
Posts: 1,074 detroit, mi
POS Dakota
super stock
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super stock
Joined: Dec 2009
Posts: 1,074
detroit, mi
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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....
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Re: rhs heads
[Re: GARAGEMAN]
#947056
03/09/11 12:26 PM
03/09/11 12:26 PM
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Joined: Dec 2009
Posts: 1,074 detroit, mi
POS Dakota
super stock
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super stock
Joined: Dec 2009
Posts: 1,074
detroit, mi
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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!
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Re: rhs heads
[Re: GARAGEMAN]
#947059
03/09/11 12:36 PM
03/09/11 12:36 PM
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Joined: Dec 2009
Posts: 1,074 detroit, mi
POS Dakota
super stock
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super stock
Joined: Dec 2009
Posts: 1,074
detroit, mi
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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.
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Re: rhs heads
[Re: GARAGEMAN]
#947060
03/09/11 12:39 PM
03/09/11 12:39 PM
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Joined: Dec 2009
Posts: 1,074 detroit, mi
POS Dakota
super stock
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super stock
Joined: Dec 2009
Posts: 1,074
detroit, mi
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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.
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Re: rhs heads
[Re: POS Dakota]
#947061
03/09/11 12:40 PM
03/09/11 12:40 PM
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Joined: Apr 2007
Posts: 71 PENNSYLVANIA
GARAGEMAN
OP
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OP
member
Joined: Apr 2007
Posts: 71
PENNSYLVANIA
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IF I put those heads on my 408 stroker engine with 375 hp. what would the estimated hp be?
Last edited by GARAGEMAN; 03/09/11 01:05 PM.
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Re: rhs heads
[Re: GARAGEMAN]
#947062
03/09/11 02:55 PM
03/09/11 02:55 PM
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Joined: Jan 2003
Posts: 16,123 Grand Haven, MI
patrick
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
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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.
1976 Spinnaker White Plymouth Duster, /6 A833OD 1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!*** 2011 Toxic Orange Dodge Charger R/T 2017 Grand Cherokee Overland 2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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Re: rhs heads
[Re: patrick]
#947063
03/09/11 04:44 PM
03/09/11 04:44 PM
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Joined: Apr 2007
Posts: 2,826 NY usa
540challenger
master
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master
Joined: Apr 2007
Posts: 2,826
NY usa
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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
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