rhs indy heads

[trbodrt]

Just curious to hear some combinations with these heads and what kind of power is being made from them.

 

[crackedback]

Mad Dart has them

Dusterdoug has a pair and his car ran 10.50/130ish
http://www.forabodiesonly.com/mopar/showthread.php?t=107472

Brian Hafliger at IMM did a Car Craft 410 pump gas deal. He got 500hp out of it with an electric water pump. Probably had about 465-470 when it was in his car here
http://www.forabodiesonly.com/mopar/showthread.php?t=92812

http://board.moparts.org/ubbthreads/showflat.php?Cat=0&Number=5784366&page=0&fpart=1&vc=1

 

[w2360Duster]

me too

2nd time out 10;851 at 122.10 with a dismal 1.52 60'

74 Duster converted to a earlier year with 6 point bar sort of about 3020 to 3100 lbs with out driver.

410" 360 with a 4 " Eagle kit
Ross 10.5 quench flat tops
RHS LA 360X heads milled to 58.8 cc with bowl work and guide boss tapering (minor)with GM LS1 valves
Comp cams custom Hyd roller


Hughes 1.5 rockers with factory Mopar banana groove shafts
Victor 340 intake (stock) with a 1" 4 hole spacer
Holley out of the box 950 HP with primary 75 jets with power valve and 81 secondary jets no PV
STOCK stock distributor with MSD 6 AL
Hedman 1 7/8 chassis headers with 3 1/2" collectors with 3" slowmasters cut off to heat the rear axle grease.
revese manual 904 with 8" 4500 convertor
8 3/4 with 4.10 spool installed with 8* pinion angle
M/T 275 60 Drag radials

 

[trbodrt]

anyone running them on a non stroked small block

 

[SRT_DSTRHOLC]

That would be me. Hoping to get mid 11s with them slightly ported
Comp Cam XS 282
1.6 rockers
Air gap intake
750 DP
KB 107 10.7 compression

4.10 suregrip All in My Duster Dyno says 480 to the Fly, Hoping at least 400 to the wheels. I believe the heads for me flow 275-280 at 500-550

 

[Rob R]

I flowed a 1.92 head and WITH a valve job and nothing else best port 240 cfm with a 4" fixture . The thing with these heads are their potential...
For the most part they are 20 cfm better than a GOOD stock 2.02 J or X head so you can figure about 40 hp over stock with the proper cam and at least 20 hp with the average wheezier Chev grind cam that some guys use... IMHO

 

[Mad Dart]

Couple Vids of it running......

[ame="http://www.youtube.com/watch?v=DAglO79ZTl4"]YouTube - IMG_1307[2].MOV[/ame]

[ame="http://www.youtube.com/watch?v=Z-3A95Rtr6Y"]YouTube - IMG_1308[1].MOV[/ame]

 

[1wild&crazyguy]

I flowed a 1.92 head and WITH a valve job and nothing else best port 240 cfm with a 4" fixture . The thing with these heads are their potential...
For the most part they are 20 cfm better than a GOOD stock 2.02 J or X head so you can figure about 40 hp over stock with the proper cam and at least 20 hp with the average wheezier Chev grind cam that some guys use... IMHO

thank you for the info.

 

[crackedback]

I flowed a 1.92 head and WITH a valve job and nothing else best port 240 cfm with a 4" fixture . The thing with these heads are their potential...
For the most part they are 20 cfm better than a GOOD stock 2.02 J or X head so you can figure about 40 hp over stock with the proper cam and at least 20 hp with the average wheezier Chev grind cam that some guys use... IMHO

With a 2.02 and valve job they will go 265-275 at .550 on a 4.030 fixture at 28". That's what Brian got on his bench, 271 IIRC. He has what many deem a stingy bench compared to Hughes and Indy.

Good heads and would be even better if the pinch wasn't so intrusive.

 

[Rob R]

With a 2.02 and valve job they will go 265-275 at .550 on a 4.030 fixture at 28". That's what Brian got on his bench, 271 IIRC. He has what many deem a stingy bench compared to Hughes and Indy.

Good heads and would be even better if the pinch wasn't so intrusive.

The potential is there but the heads I tested wouldn't go 275 cfm with only a 2.02 valve and a valve job. I can see those numbers with a bit of work and that cross section opened up .125 - .150...These heads truly HAVE THE POTENTIAL..!!
I like them...

 

[trbodrt]

Here's the combo i will be running, 360 .040 over with kb 107 .001 in the hole, scat i beams with a stock crank, rpm airgap, a cam in the 248 range and a 750 demon in my dart, I was thinking about going with the rhs heads from imm engines which cost about the same as eddy heads but seem to flow better. Not sure which to go with, it's a street motor so i guess weight isn't a huge issue

 

[crackedback]

248's at .050 on the cam? What lift?

I'd go with the RHS heads and have Brian cut them to the desired CC for your compression goal. Put the 1008 style .039 head gasket and go.

Sounds like a solid build and would make good power.

Not a big fan of demon carbs, I'd go 950hp on it.

 

[trbodrt]

lift somewhere in the 540's range. Yeah but i got a great deal on the carb, FREE!!!!

 

[Brian Hafliger]

The potential is there but the heads I tested wouldn't go 275 cfm with only a 2.02 valve and a valve job. I can see those numbers with a bit of work and that cross section opened up .125 - .150...These heads truly HAVE THE POTENTIAL..!!
I like them...

We do a 4 angle seat cut and blend the bottom angle and leadge left by the seat cut to improve flow. We also do a healthy back cut on the valve. Those flow #'s are accurate...

Brian

 

[Rob R]

We do a 4 angle seat cut and blend the bottom angle and leadge left by the seat cut to improve flow. We also do a healthy back cut on the valve. Those flow #'s are accurate...

Brian

The heads that I have here have a .690 and a .720 cross section at the pinch..lots of irregular casting in the throat... not a very nice pair of castings...but could be improved with a little bit of love..
I can see a 70 in the bowl and a nice radius on the top plus a back cut would do wonders for flow..but the castings that are here are not pretty and would need a bit more love to see 270.
But the potential is there and room for more...