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Re: Pump gas 410 SB Mopar using RHS heads! [Re: Brian Hafliger] #604824
02/08/10 03:25 PM
02/08/10 03:25 PM
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PNW
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Beebuzzn Offline
mopar
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Quote:

Heads flow 268@ .500 and [Email]272@.550[/Email] and then they go turbulent. Flow curve is great from bottom to top. These are unported, just blended the valve job into the bowl. This is how we sell these heads.

We tried rpm airgap, and super victor. The latter was down on TQ and HP up till 5000rpm...it was down ALOT!!
We tried my 1 7/8 TTI's against TTI's smaller header and the small header beat it everywhere.

Also tried some 1 3/4 Hookers and they were almost as good as the small TTI's but not quite.

Yes they still hang in the port some, but didn't seem to hurt anything!!






Just curious if you ran stock 340 hp exhaust manifolds how much HP and TQ would you lose ? Thanks

Re: Pump gas 410 SB Mopar using RHS heads! [Re: Beebuzzn] #604825
02/08/10 03:41 PM
02/08/10 03:41 PM
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SoCal
Brian Hafliger Offline OP
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Quote:

Quote:

Heads flow 268@ .500 and [Email]272@.550[/Email] and then they go turbulent. Flow curve is great from bottom to top. These are unported, just blended the valve job into the bowl. This is how we sell these heads.

We tried rpm airgap, and super victor. The latter was down on TQ and HP up till 5000rpm...it was down ALOT!!
We tried my 1 7/8 TTI's against TTI's smaller header and the small header beat it everywhere.

Also tried some 1 3/4 Hookers and they were almost as good as the small TTI's but not quite.

Yes they still hang in the port some, but didn't seem to hurt anything!!






Just curious if you ran stock 340 hp exhaust manifolds how much HP and TQ would you lose ? Thanks




My guess would be 20-30HP maybe...


Brian Hafliger
Re: Pump gas 410 SB Mopar using RHS heads! [Re: cudadoug] #604826
02/08/10 03:42 PM
02/08/10 03:42 PM
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SoCal
Brian Hafliger Offline OP
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Quote:

Brian, one more question: Do you any have flow numbers (from your bench) with the 1.92 intakes??




I do, they went 247@ .500 and .550 then went down. Low lift was OK, better than mild port J heads!


Brian Hafliger
Re: Pump gas 410 SB Mopar using RHS heads! [Re: Brian Hafliger] #604827
02/12/10 03:50 AM
02/12/10 03:50 AM
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SoCal
Brian Hafliger Offline OP
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Here it is in the car for the car show:

Re: Pump gas 410 SB Mopar using RHS heads! [Re: Brian Hafliger] #604828
02/12/10 03:51 AM
02/12/10 03:51 AM
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SoCal
Brian Hafliger Offline OP
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Dust'a:

Re: Pump gas 410 SB Mopar using RHS heads! [Re: Brian Hafliger] #604829
02/12/10 03:52 AM
02/12/10 03:52 AM
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SoCal
Brian Hafliger Offline OP
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Graph of best pulls between rpm intake and SV:

Re: Pump gas 410 SB Mopar using RHS heads! [Re: Brian Hafliger] #604830
02/12/10 03:59 AM
02/12/10 03:59 AM
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Overpriced Housing Central
RobX4406 Offline
I Live Here
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So, are you driving it to work?

Re: Pump gas 410 SB Mopar using RHS heads! [Re: RobX4406] #604831
02/12/10 04:04 AM
02/12/10 04:04 AM
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SoCal
Brian Hafliger Offline OP
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Re: Pump gas 410 SB Mopar using RHS heads! [Re: Brian Hafliger] #604832
02/12/10 04:12 AM
02/12/10 04:12 AM
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SoCal
Brian Hafliger Offline OP
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John shooting the engine up close and personal!!
http://yfrog.us/1scarcraft408397z

Re: Pump gas 410 SB Mopar using RHS heads! [Re: Brian Hafliger] #604833
02/12/10 09:28 AM
02/12/10 09:28 AM
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Az
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Quote:

Yes!!
Video:
http://yfrog.us/5ecarcraft408392z


Great stuff!! Thanx for all the info and pix!!


Fastest 300
Re: Pump gas 410 SB Mopar using RHS heads! [Re: Crizila] #604834
02/12/10 10:24 AM
02/12/10 10:24 AM
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oberlin, Ohio
Rapid340 Offline
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Any chance of a few 1/4 mile passes?

Thanks for sharing the details and results.


1971 Factory Appearing Duster 340 11.000 @ 122 mph
Re: Pump gas 410 SB Mopar using RHS heads! [Re: Rapid340] #604835
02/12/10 10:52 AM
02/12/10 10:52 AM
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Shelby Twp. Mi
HardcoreB Offline
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This thread is useless without track times. LOL...It would be nice if you have the oppurtunity though.

Re: Pump gas 410 SB Mopar using RHS heads! [Re: Brian Hafliger] #604836
02/12/10 11:06 AM
02/12/10 11:06 AM
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Baltimore, MD
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397STROKER Offline
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If it made more power with the Air Gap why do you have the Victor on it in the car, just for Show?

Re: Pump gas 410 SB Mopar using RHS heads! [Re: 397STROKER] #604837
02/12/10 11:21 AM
02/12/10 11:21 AM
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SoCal
Brian Hafliger Offline OP
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Quote:

If it made more power with the Air Gap why do you have the Victor on it in the car, just for Show?




This was a last minute deal putting the engine in my car for the show. This is how the engine was after testing and I didn't have time to change anything...I barely finished it up last night!!

I will be changing it though...I can tell you this...it pulls HARD!


Brian Hafliger
Re: Pump gas 410 SB Mopar using RHS heads! [Re: HardcoreB] #604838
02/12/10 11:23 AM
02/12/10 11:23 AM
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SoCal
Brian Hafliger Offline OP
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Quote:

This thread is useless without track times. LOL...It would be nice if you have the oppurtunity though.




If Rob will let me race the car with his converter I might...MIGHT take it to Barona...we'll see. It's 1/8. My gearing is too steep for 1/4 and this engine. And I'm not changing that (dana)!!

Re: Pump gas 410 SB Mopar using RHS heads! [Re: Brian Hafliger] #604839
02/12/10 12:29 PM
02/12/10 12:29 PM
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Overpriced Housing Central
RobX4406 Offline
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Quote:

Quote:

This thread is useless without track times. LOL...It would be nice if you have the oppurtunity though.




If Rob will let me race the car with his converter I might...MIGHT take it to Barona...we'll see. It's 1/8. My gearing is too steep for 1/4 and this engine. And I'm not changing that (dana)!!




It's good with me. It's not balloon plated or set up for a transbrake. No transbrake launches, and I'm cool with it.

Go beat on it a bit!

Re: Pump gas 410 SB Mopar using RHS heads! [Re: Crizila] #604840
02/13/10 10:56 AM
02/13/10 10:56 AM
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Weddington, N.C.
Streetwize Offline
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Great combo, Brian!!

That very close to the 500hp stroker small block recipie I use for Mopar and Ford Small blocks for combos that want a strong 'big block' feeling torque curve in their cars that don't neccesarily care so much about winding them up too tight. One Key with hydraulic flat tappets is getting around 250 cfm at .400, since most hydraulics peak under .550 lift going .050 down from there I'm looking to get 265-280 at .500, this kind of flow gives you a big fat torque curve right in the middle of the powerband with a very streetable cam profile. Mopars want about 8-10 degrees more at .050 (typically 242-246 on the intake) for the same type of curve and Fords tend to like a single plane like the Vic Jr over the RPM type big dual plane. On your combo looking a the torque curves you can see the SVic is way overkill, it's lazy lazy until you get the piston speed WAY UP...I'd be real interested to se what the M1 (which is essentially a slightly updated strip dominator) would do...those runners go about 285 which might be perfect and worth enough up top over the RPM above 4000 (the equal-point cross-over is right around 4800 at 340 inches) or so to make a nice trade.

One thing I try to express is the with a 4" arm you're letting the piston speed do the work, you don't neccesarily want or need to wind them up so high, and truth be known a 370-ish smallblock motor can make the same HP as a 400+ incher with about 500 more RPM....actually the 370 is more efficient in terms of HP production because once you get over the torque peak the rings are acting like a brake (in terms of frictional hp loss per each 100 rpm of RPM gain). Strokers make there best moves in the big fat middle, that's the main reason automatic cars (with typically wider gear spreads) ET better with Strokers, they win in the Torque per Cube category, not so much the RPM dependant HP/cube dept.

did you chart the head flow? I'm wanting to a set of those X's.

I think the next potential big leap with the Magnum style stud rocker head would be to rotate the intake valve up and the exhaust down (while staying on the bore center) combined with a compact figure 8 combustion chamber and a 2.08" intake valve, very similar to the TFS twisted wedge. This could get rid of the pushrod pinch and shorten both runner lengths.....I think such a design could flow 280 at .450 and ~305-310 @ .500 without too much difficulty....and that equates to easy 600hp potential. With the right offset on the intake and a 1.73 (BBC/cleveland ford ratio) rocker ratio the sky is the limit....I think it could be made affordable too.

Last edited by Streetwize; 02/13/10 01:17 PM.

WIZE

World's Quickest Diahatsu Rocky (??) 414" Stroker Small block Mopar Powered. 10.84 @ 123...and gettin' quicker!

https://www.youtube.com/watch?v=-mWzLma3YGI

In Car:

https://www.youtube.com/watch?v=PjXcf95e6v0
Re: Pump gas 410 SB Mopar using RHS heads! [Re: Streetwize] #604841
02/14/10 01:12 AM
02/14/10 01:12 AM
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SoCal
Brian Hafliger Offline OP
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Head flow:
Some guys were asking me what the RHS heads we sell flow so here are the #'s....
Lift Int. Ex.
100 69 58
200 141 119
300 197 161
400 241 184
500 267 193
550 271 195
600 int. port goes turbulent

What that means is even though it goes turbulent, with an intake on it pulled to .600 lift so lifting the valve to .600 will still net you more HP.

This test used a 4.030 bore and test pressure of 28".
Ex. side I used a 1 3/4 pipe and as you can see, it's damn good OOTB!


Brian Hafliger
Re: Pump gas 410 SB Mopar using RHS heads! [Re: Brian Hafliger] #604842
05/15/10 10:30 AM
05/15/10 10:30 AM
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Columbus Ga
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reflections7 Offline
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Thank you for your time. I really learned alot.

Re: Pump gas 410 SB Mopar using RHS heads! [Re: reflections7] #604843
05/15/10 07:25 PM
05/15/10 07:25 PM
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SoCal
Brian Hafliger Offline OP
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Welcome!
I just got the engine out and will be putting back on the dyno for a few more tests.
Then we're pulling the cam and top end off for a "part 2" to the story.
I should add that we'll be porting a set of eddy heads, roller cam and after some carb testing we'll be going with EFI; plus we plan to try F&B's 3-2BBL injection setup!
Should be alot of fun!!

Last edited by ou812/IMM; 05/16/10 11:14 AM.

Brian Hafliger
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