RHS flow #'s

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highwaystar said:
How does the Edelbrock heads compare out of the box? I also understand you are lucky if you can truly bolt on a set of these, without doing some work to them.
T.J.
Click to expand...

OOTB Edelbrock head on my bench with 4.030 bore:

lift int. ex.
100 64 49
200 123 99
300 174 130
400 222 152
500 239 167
550 244 170
No pipe on ex. on this test.

Mild port on Eddy heads with 2.055 valves:

lift int. ex.
100 72 63
200 148 115
300 201 147
400 246 174
500 266 194
550 272 202
1 3/4 pipe used in this test.
Brian
 
ou812 said:
The way we sell them is unported. We just blend the valve job into the bowl which takes about 2-3min. per bowl. It makes a big difference in flow so that's why we do it.
These heads will rip on a 318! If your running full exhaust system, just use 1.6 on both.
Brian
Click to expand...

Just to know how much HP would that combo make? 325 HP? BTW exhaust would be my same setup as now just with some nice headers instead of manifolds. What header tube size would work best also, 1 5/8"?
 
ou812 said:
OOTB Edelbrock head on my bench with 4.030 bore:

lift int. ex.
100 64 49
200 123 99
300 174 130
400 222 152
500 239 167
550 244 170
No pipe on ex. on this test.

Mild port on Eddy heads with 2.055 valves:

lift int. ex.
100 72 63
200 148 115
300 201 147
400 246 174
500 266 194
550 272 202
1 3/4 pipe used in this test.
Brian
Click to expand...

These #s make me like my RHS heads even more now lol.
 
MOPEkidD-3 said:
Just to know how much HP would that combo make? 325 HP? BTW exhaust would be my same setup as now just with some nice headers instead of manifolds. What header tube size would work best also, 1 5/8"?
Click to expand...

Yeah, that's an honest guess at HP. Yes, 1 5/8 is what I would use...
 
ou812 said:
No problem with that cam. I would run 1.6 ratio if you don't already have the rockers.
Click to expand...


Any reason for a 1.6 rocker arm? With my setup along with the heads, do you think I'll be restricting and running lean? Reason I ask for this is cause I want to use a 650 carb and edelbrock rpm dual manifold and 3k stall converter. Thanks again
 
flow pipes will always bump up the #'s.

I've telling people that eddy heads are laughable OOTB for yrs and no one believed me, noooooowwww all the usual suspects are silent.lol

For the $$$$, I'd take the rhs or even ported J's anyday over the scrubyer*ocks ha ha
 
340Dust-her said:
Any reason for a 1.6 rocker arm? With my setup along with the heads, do you think I'll be restricting and running lean? Reason I ask for this is cause I want to use a 650 carb and edelbrock rpm dual manifold and 3k stall converter. Thanks again
Click to expand...

More power potential. Stock BB Chevy's use 1.7....Your right on cue with the 650 and rpm intake. Use the 1.6 if your buying from scratch.
Brian
 
I agree with the RHS heads, they are a great head and flow amazing for what they are! I have a set of ported eddys, and I like them. They seem to work fine on my 408...I guess I'm biased towards aluminum heads...lol. Maybe I shoulda picked up a set of Indy's when I had the chance!
 
1wild&crazyguy said:
flow pipes will always bump up the #'s.

I've telling people that eddy heads are laughable OOTB for yrs and no one believed me, noooooowwww all the usual suspects are silent
Click to expand...

I'll just make a peeeeep and say for years they were the only aluminum head OOTB or otherwise offered and not to bad of a deal.
 
Hey, I'm not bashin anyone who has eddy heads, if you have them ...cool.

I just wish [since the eddys are aluminum heads and aluminum heads are predominately RACE heads].... that they would FLOW 'like' an aluminum race head usually does, thats all.
Cause all you get with eddys 'ootb' are a $1400+ pair of light weight blended j heads-in comparison.


I love the fact that these 'RHS' bolt on and actually look stock instead of hanging off the block an 1'' on each end and wacking out accessory's.

Just need a version with no push rod pinch..
 
I know your not bashing. I just made a mention, that's it. And I agree with the touching up of a iron head and the cost effectiveness of it.

The Indy/Edelbrcok version without the pinch rod in the port issue is nice, except the price.
 
In my opinion you can't get a better head that flows the way Brian is setting them up for the money!! This one is HARD to beat for sure.

FYI- Hughes sells them assembled, I called and talked to Kevin about 3 weeks ago to tell him the CC's were off on several sets of heads that have been checked and that they should check them out before selling them as 62cc and that the ones I know of came in at 66 & 67 cc's. His response was well I guess we should check a few on the pallet every once in a while. So if you bought RHS heads from them thinking they were 62cc, chances are very high that your compression ratio is LOWER than you think!! We are talking a 1/2 point in most cases!! That is not good at all! If you want them checked they charge $85.00 and then more to mill them down to your specs is what he told me.

That to me is not a True Machine Shop no way no how!
 
Mad Dart said:
In my opinion you can't get a better head that flows the way Brian is setting them up for the money!! This one is HARD to beat for sure.

FYI- Hughes sells them assembled, I called and talked to Kevin about 3 weeks ago to tell him the CC's were off on several sets of heads that have been checked and that they should check them out before selling them as 62cc and that the ones I know of came in at 66 & 67 cc's. His response was well I guess we should check a few on the pallet every once in a while. So if you bought RHS heads from them thinking they were 62cc, chances are very high that your compression ratio is LOWER than you think!! We are talking a 1/2 point in most cases!! That is not good at all! If you want them checked they charge $85.00 and then more to mill them down to your specs is what he told me.

That to me is not a True Machine Shop no way no how!
Click to expand...

Yeah...hughes engines....great guys....lol

Sounds like false advertisement on behalf of hughes and rhs for lack of quality control.
But hey... at least it's that minor,
as in not much $ robert deniro $
 
We're stocking those heads now, assembled just as I've listed. I have 5 sets on order and will be available next week for sale.
We just dyno'd a 408 with them, hyd. cam and made 485HP and 517TQ on pump gas!
Brian
 
ou812 said:
We're stocking those heads now, assembled just as I've listed. I have 5 sets on order and will be available next week for sale.
We just dyno'd a 408 with them, hyd. cam and made 485HP and 517TQ on pump gas!
Brian
Click to expand...

Damn Brian those are some REALLY good numbers!!!

Where did it peak at??

How much tq at 3000rpm??

What carb? Intake?

Maybe we should dyno the 359 and see what it does??
 
ou812 said:
We're stocking those heads now, assembled just as I've listed. I have 5 sets on order and will be available next week for sale.
We just dyno'd a 408 with them, hyd. cam and made 485HP and 517TQ on pump gas!
Brian
Click to expand...

Good numbers for sure!
 
ou812 said:
We're stocking those heads now, assembled just as I've listed. I have 5 sets on order and will be available next week for sale.
We just dyno'd a 408 with them, hyd. cam and made 485HP and 517TQ on pump gas!
Brian
Click to expand...

Those are good #s, have you thought about trying a roller cam?
 
Mad Dart said:
Damn Brian those are some REALLY good numbers!!!

Where did it peak at??

How much tq at 3000rpm??

What carb? Intake?

Maybe we should dyno the 359 and see what it does??
Click to expand...

Peak was 5400rpm! TQ at 3000 was almost 450! 750 holley DP and rpm air gap...unported.
TTI 1 5/8-1 3/4 headers were best over straight 1 3/4 and 1 7/8.
Liked thicker oil too as it's hyd.
 
I wouldn't be too hard on the guys at Hughes engines, they treated me very good when i purchased mine, gave me some history on them, Kevin even explained about why not to get caught up in the max flow #s, mid lift #s are more important, the heads looked really nice when i got them, you really can't exspect the world for 875.00 bucks.
 
JoeDust451 said:
Those are good #s, have you thought about trying a roller cam?
Click to expand...

This is a budget build so that was out. If we get to follow it up with a more power than economic build we will use a roller, probably solid and use the lifters we helped develop.
 
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