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Re: What to Build to compete with a SR20 BBC [Re: 74yellowduster] #1695420
11/13/14 01:34 AM
11/13/14 01:34 AM
Joined: Jun 2010
Posts: 3,112
LONG ISLAND
fishy340 Offline
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LONG ISLAND
Quote:

who needs Dart blocks...

https://www.youtube.com/watch?v=BsrwNqu0e-M

gen 3 hemi 201mph 6.97 sec

chebbie boys will start cryin soon when


they get to 6.50's




Got about $ 55.000 I can borrow ?

Re: What to Build to compete with a SR20 BBC [Re: Mpetros] #1695421
11/13/14 03:54 PM
11/13/14 03:54 PM
Joined: Jan 2003
Posts: 19,380
Las Vegas
Al_Alguire Offline
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Quote:

Steve Schmidt also gives a one year warranty on those Engines as long as You don't take them apart




This is true and a great selling point. Had a few Mopar guys out here convert to them in their Mopar cars. I will say the dyno numbers seem to be pretty inflated on them however. None of the cars I have seen converter to Schmidt power perform anywhere near what they dyno numbers are. Most are going no faster than they were with the Mopar motors they have. I mean come on I know of a certain Schmidt 655 in an ex pro stock car weighing 2200lbs that only manages 7.30's at sea level and 7.50's here. That is a LONG way from 1430hp..And I know of at least 4 others with similar results.


"I am not ashamed to confess I am ignorant of what I do not know."

"It's never wrong to do the right thing"
Re: What to Build to compete with a SR20 BBC [Re: Al_Alguire] #1695422
11/13/14 04:01 PM
11/13/14 04:01 PM
Joined: Dec 2009
Posts: 20,655
in a cattle trailer down by th...
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Guitar Jones Offline
Paddle faster! I hear banjo music!
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in a cattle trailer down by th...
Quote:

Quote:

Steve Schmidt also gives a one year warranty on those Engines as long as You don't take them apart




This is true and a great selling point. Had a few Mopar guys out here convert to them in their Mopar cars. I will say the dyno numbers seem to be pretty inflated on them however. None of the cars I have seen converter to Schmidt power perform anywhere near what they dyno numbers are. Most are going no faster than they were with the Mopar motors they have. I mean come on I know of a certain Schmidt 655 in an ex pro stock car weighing 2200lbs that only manages 7.30's at sea level and 7.50's here. That is a LONG way from 1430hp..And I know of at least 4 others with similar results.




I don't know, but I do know that a check book won't increase your talent level. Just ask McGaha.


"Follow me the wise man said, but he walked behind"


'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
Re: What to Build to compete with a SR20 BBC [Re: Guitar Jones] #1695423
11/13/14 04:11 PM
11/13/14 04:11 PM
Joined: Jan 2003
Posts: 19,380
Las Vegas
Al_Alguire Offline
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Las Vegas
Oh I got Mcgaha stories too Had a couple friends that worked there for a couple years.

As for the Schmidt HP claims I think it is a pretty well known deal. Those things just do not live up to the claims.

Oh yeah as for competing with an SR deal in a Mopar. Forgetaboutit!!


"I am not ashamed to confess I am ignorant of what I do not know."

"It's never wrong to do the right thing"
Re: What to Build to compete with a SR20 BBC [Re: Al_Alguire] #1695424
11/13/14 04:24 PM
11/13/14 04:24 PM
Joined: Dec 2009
Posts: 20,655
in a cattle trailer down by th...
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Guitar Jones Offline
Paddle faster! I hear banjo music!
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Posts: 20,655
in a cattle trailer down by th...
Quote:

Oh I got Mcgaha stories too Had a couple friends that worked there for a couple years.




I can only imagine what the atmosphere must be like in that shop. No thank you.


"Follow me the wise man said, but he walked behind"


'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
Re: What to Build to compete with a SR20 BBC [Re: Mpetros] #1695425
11/15/14 02:02 PM
11/15/14 02:02 PM
Joined: Oct 2010
Posts: 295
Greensburg, Pa
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Mpetros Offline OP
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Greensburg, Pa
I have heard rumors of a 4.840 Iron Mopar Block any truth to it?

Re: What to Build to compete with a SR20 BBC [Re: Mpetros] #1695426
11/15/14 03:12 PM
11/15/14 03:12 PM
Joined: Jan 2003
Posts: 19,380
Las Vegas
Al_Alguire Offline
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Al_Alguire  Offline
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Las Vegas
Indy has 4.84 blocks.


"I am not ashamed to confess I am ignorant of what I do not know."

"It's never wrong to do the right thing"
Re: What to Build to compete with a SR20 BBC [Re: 74yellowduster] #1695427
11/15/14 04:49 PM
11/15/14 04:49 PM
Joined: Feb 2011
Posts: 4,302
Nebraska
72Swinger Offline
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Nebraska
Quote:

who needs Dart blocks...

https://www.youtube.com/watch?v=BsrwNqu0e-M

gen 3 hemi 201mph 6.97 sec

chebbie boys will start cryin soon when they get to 6.50's


This car weighs 3400lbs and this pass was also with the "small" blower.


Mopar to the bone!!!
Re: What to Build to compete with a SR20 BBC [Re: Al_Alguire] #1695428
11/15/14 07:41 PM
11/15/14 07:41 PM
Joined: Oct 2010
Posts: 295
Greensburg, Pa
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Mpetros Offline OP
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Greensburg, Pa
I will call Indy Monday.. But I thought they only did 4.840 in Aluminum.. Our Rule states Iron Block and they check them during super tech at start of season

Re: What to Build to compete with a SR20 BBC [Re: Mpetros] #1695429
11/15/14 08:51 PM
11/15/14 08:51 PM
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Posts: 6,890
North Alabama
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Monte_Smith Offline
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Doubt INDY does any iron 4.840 blocks, but even if they did, as far as I know, the only head that fits it is the 600/13. That ain't gonna get it done either. Not even close

Monte

Re: What to Build to compete with a SR20 BBC [Re: 74yellowduster] #1695430
11/15/14 08:54 PM
11/15/14 08:54 PM
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Posts: 6,890
North Alabama
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Monte_Smith Offline
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North Alabama
Quote:

who needs Dart blocks...

https://www.youtube.com/watch?v=BsrwNqu0e-M

gen 3 hemi 201mph 6.97 sec

chebbie boys will start cryin soon when they get to 6.50's


What does this have to do with a thread talking about cast iron, big block, N/A, truck pulling engines???

Monte

Re: What to Build to compete with a SR20 BBC [Re: Monte_Smith] #1695431
11/15/14 09:33 PM
11/15/14 09:33 PM
Joined: Jan 2003
Posts: 19,380
Las Vegas
Al_Alguire Offline
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Posts: 19,380
Las Vegas
Sorry missed the iron part. They only do aluminum.


"I am not ashamed to confess I am ignorant of what I do not know."

"It's never wrong to do the right thing"
Re: What to Build to compete with a SR20 BBC [Re: Al_Alguire] #1695432
11/16/14 02:47 PM
11/16/14 02:47 PM
Joined: May 2005
Posts: 2,006
Apollo, PA.
B1MAXX Offline
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Wouldn't 4.5 x 4.5 make more torque .... Horsepower is tq x rpm right? Is there a head that's gets this combo to 950-1000 ft/lbs range. Then 6400rpm = 1157-1218hp. Don't beat me up, this all just got me thinking. I would think 975 ft/lbs would be better than 883ft/lbs. Then you would have to gear for lower rpm and more wheel speed. There is more to it than head cfm and dyno numbers. Heck I'd hate to see a racetrack full of guys standing around with a set of cylinder heads and dyno sheet.

Re: What to Build to compete with a SR20 BBC [Re: B1MAXX] #1695433
11/16/14 05:25 PM
11/16/14 05:25 PM
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Posts: 6,890
North Alabama
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Monte_Smith Offline
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North Alabama
Quote:

Wouldn't 4.5 x 4.5 make more torque .... Horsepower is tq x rpm right? Is there a head that's gets this combo to 950-1000 ft/lbs range. Then 6400rpm = 1157-1218hp. Don't beat me up, this all just got me thinking. I would think 975 ft/lbs would be better than 883ft/lbs. Then you would have to gear for lower rpm and more wheel speed. There is more to it than head cfm and dyno numbers. Heck I'd hate to see a racetrack full of guys standing around with a set of cylinder heads and dyno sheet.


A 572" B-1 motor that makes 1200hp at 6400 rpm..........damn baby, sign me up for one of them.........LOL!!!

Any yes, there IS more to it than cfm and dyno numbers............but ONE thing is constant. You want to make power, you have to move air and a lot of it. A smaller bore is never going to be condusive to flowing more air with a high flowing cylinder head. Air speed is important, but not at the cost of volume. There has to be a good balance.

As already talked about, the HEMI head has the cfm capability in the head to do this, but to make it flow enough air to make the required power, you will have to spin it to the moon.

Monte

Re: What to Build to compete with a SR20 BBC [Re: Monte_Smith] #1695434
11/16/14 05:51 PM
11/16/14 05:51 PM
Joined: May 2005
Posts: 2,006
Apollo, PA.
B1MAXX Offline
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peak torque at 6400, max hp 7000-7200 need 880ft/lbs @ 7200 1206hp. was what I was thinking. What is the airflow potential difference between say 4.56 and 4.60/4.625 bore?

Re: What to Build to compete with a SR20 BBC [Re: Mpetros] #1695435
11/18/14 12:58 AM
11/18/14 12:58 AM
Joined: Oct 2010
Posts: 295
Greensburg, Pa
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Mpetros Offline OP
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Indy does only do 4.840 Blocks in Aluminum..

Re: What to Build to compete with a SR20 BBC [Re: Mpetros] #1695436
11/18/14 01:06 AM
11/18/14 01:06 AM
Joined: Oct 2010
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Greensburg, Pa
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Mpetros Offline OP
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Greensburg, Pa
Rumor Koleno was going to start making Blocks..Any Truth? Maybe with enough interest they would make a Iron 4.840 BS Block

Re: What to Build to compete with a SR20 BBC [Re: Mpetros] #1695437
11/18/14 01:10 AM
11/18/14 01:10 AM
Joined: Oct 2007
Posts: 3,978
Hilltown Pa
1967dartgt Offline
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Hilltown Pa
Talk to Tony at BES he would be the one to get you closest to your goal.


Brett Miller W9 cnc'd heads
STR Chassis fabraction
Re: What to Build to compete with a SR20 BBC [Re: Mpetros] #1695438
11/18/14 02:26 PM
11/18/14 02:26 PM
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Posts: 6,890
North Alabama
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Monte_Smith Offline
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North Alabama
Quote:

Rumor Koleno was going to start making Blocks..Any Truth? Maybe with enough interest they would make a Iron 4.840 BS Block


No reason..........there is no good head to put on it

Monte

Re: What to Build to compete with a SR20 BBC [Re: Monte_Smith] #1695439
11/18/14 04:05 PM
11/18/14 04:05 PM
Joined: Apr 2005
Posts: 2,128
Salt Lake City
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Salt Lake City
To the O/P's original question about what Mopar would you pick to compete with a SR20 engine. I have around 38k into my Predator engine with a steel block. There are few that know how to get 1200+ HP out of them, and I happen to know one. If you are ready to put down 38-40+ thousand to have a Mopar label, be my guest. Get started in the right direction by contacting boatracer 572. He's been successful with those combos. Or you could call Sunset Racecraft and order their cookie cutter 632 SR20 model for around 15k less.

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