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what will it run?? #985861
05/04/11 12:52 AM
05/04/11 12:52 AM
Joined: Jun 2004
Posts: 2,110
toledo, ohio
plasticfantastic Offline OP
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plasticfantastic  Offline OP
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toledo, ohio
I'm curious what everyone thinks our roadrunner will run with this new combo?

70 rr. 3900#, 440 12.5 to 1 compression B1/brodix heads, 696 roller 850 holly double pumper M-1 intake.5000 stall 4.86 gear.super stock springs 29.5/10.5x15 slicks

hope to get it out in the next week or so and will know for sure.

Re: what will it run?? [Re: plasticfantastic] #985862
05/04/11 01:01 AM
05/04/11 01:01 AM
Joined: Mar 2008
Posts: 5,746
Ontario, Canada
Dodgem Offline
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Ontario, Canada
Which B1's ? porting.
But I'd say 10.9's are feesable!

Re: what will it run?? [Re: Dodgem] #985863
05/04/11 01:47 AM
05/04/11 01:47 AM
Joined: Dec 2003
Posts: 1,153
Adrian, Mi
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pro6pakRR Offline
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Adrian, Mi
Not sure which B-1 but I'm lead to think there B/S'S.They have the max wedge port's that are ported.

Re: what will it run?? [Re: pro6pakRR] #985864
05/04/11 02:01 AM
05/04/11 02:01 AM
Joined: Jun 2004
Posts: 2,110
toledo, ohio
plasticfantastic Offline OP
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Quote:

Not sure which B-1 but I'm lead to think there B/S'S.They have the max wedge port's that are ported.




what he said

Re: what will it run?? [Re: plasticfantastic] #985865
05/04/11 02:27 AM
05/04/11 02:27 AM
Joined: Jan 2003
Posts: 6,591
Canton, Ohio
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Sport440 Offline
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Canton, Ohio
Quote:

I'm curious what everyone thinks our roadrunner will run with this new combo?

70 rr. 3900#, 440 12.5 to 1 compression B1/brodix heads, 696 roller 850 holly double pumper M-1 intake.5000 stall 4.86 gear.super stock springs 29.5/10.5x15 slicks

hope to get it out in the next week or so and will know for sure.





With your overall gearing the best that you can run is about a 10.60 to 10.80 @ 7300 to 7500+ RPM

Re: what will it run?? [Re: Sport440] #985866
05/04/11 02:40 AM
05/04/11 02:40 AM
Joined: Sep 2003
Posts: 1,259
Netherlands
72Challenger Offline
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Netherlands
Think it would like more carb?


'
Re: what will it run?? [Re: plasticfantastic] #985867
05/04/11 09:47 AM
05/04/11 09:47 AM
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck Offline
Not enough dumb comments...yet
Mr.Yuck  Offline
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Joined: Jan 2003
Posts: 24,562
Brookeville, Md
10.9??? I'd guess much better than that. You might have too much gear depending on tire size. I'll guess 10.50's and you might need a 950.


[IMG]http://i66.tinypic.com/pui5j.jpg[/IMG]
Coming soon!!!!
Re: what will it run?? [Re: Mr.Yuck] #985868
05/04/11 09:51 AM
05/04/11 09:51 AM
Joined: Feb 2003
Posts: 4,503
NJ
4
440challenger Offline
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NJ
Id expect it to run much faster then 10.9 !!
I'd be hoping for at least the 10.50 area

Re: what will it run?? [Re: plasticfantastic] #985869
05/04/11 10:06 AM
05/04/11 10:06 AM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
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Romeo MI
Doug its possible to run a 10.40 to 10.60 dependent
on the conv slippage and what your dad want to spin
it to but I'm sure it'll want way more carb... more
like a 1050

Re: what will it run?? [Re: MR_P_BODY] #985870
05/04/11 11:14 AM
05/04/11 11:14 AM
Joined: Jun 2004
Posts: 2,110
toledo, ohio
plasticfantastic Offline OP
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plasticfantastic  Offline OP
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toledo, ohio
Quote:

Doug its possible to run a 10.40 to 10.60 dependent
on the conv slippage and what your dad want to spin
it to but I'm sure it'll want way more carb... more
like a 1050





Mike,
We have a dominator going on it after we get all the linkage and mounting brackets in, and will be swapping out the gear for a 4.56
Car's been sitting too long waiting on parts and stuff, so putting the 850 on and going out to see what it will do.
I think dad would be happy with a 10.99999999,

Re: what will it run?? [Re: plasticfantastic] #985871
05/04/11 11:18 AM
05/04/11 11:18 AM
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck Offline
Not enough dumb comments...yet
Mr.Yuck  Offline
Not enough dumb comments...yet

Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Quote:

Quote:

Doug its possible to run a 10.40 to 10.60 dependent
on the conv slippage and what your dad want to spin
it to but I'm sure it'll want way more carb... more
like a 1050





Mike,
We have a dominator going on it after we get all the linkage and mounting brackets in, and will be swapping out the gear for a 4.56
Car's been sitting too long waiting on parts and stuff, so putting the 850 on and going out to see what it will do.
I think dad would be happy with a 10.99999999,




it sould run that as it sits. Go have some fun

Re: what will it run?? [Re: Mr.Yuck] #985872
05/04/11 11:20 AM
05/04/11 11:20 AM
Joined: Jun 2004
Posts: 2,110
toledo, ohio
plasticfantastic Offline OP
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Quote:


it sould run that as it sits. Go have some fun




Thats what we figure, but was curious what everyone thought its potentual was past a 10.999,

Fun to see what people say, and then see what it does.

Re: what will it run?? [Re: plasticfantastic] #985873
05/04/11 12:45 PM
05/04/11 12:45 PM
Joined: Sep 2009
Posts: 2,325
Clinton Twp... north of Deetro...
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Labratt Offline
Good Ol Randy B!
Labratt  Offline
Good Ol Randy B!
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Joined: Sep 2009
Posts: 2,325
Clinton Twp... north of Deetro...
Doug...3900lbs.??? I hope that's with your dad in the seat! Even then,that seems real high! My GTX,with me(235lbs.)in the seat,weighs 3735lbs. Where did you guys get it scaled...Milan? I'm skeptical about that weight!

Last edited by Labratt; 05/04/11 12:48 PM.
Re: what will it run?? [Re: plasticfantastic] #985874
05/04/11 12:46 PM
05/04/11 12:46 PM
Joined: Sep 2003
Posts: 2,008
Sweet Home Alabama
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MRMOPAR622 Offline
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Sweet Home Alabama
Good Luck I never was able to get any of my B-Body cars off the line with that small of a tire. But its been over 10 years since I raced a B-Body so the tires should be much better now.


"To Be The Man'You Have Got To Beat The Man" "T/D and Pro-Bracket Racer"
Re: what will it run?? [Re: MRMOPAR622] #985875
05/04/11 12:52 PM
05/04/11 12:52 PM
Joined: Sep 2009
Posts: 2,325
Clinton Twp... north of Deetro...
L
Labratt Offline
Good Ol Randy B!
Labratt  Offline
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Joined: Sep 2009
Posts: 2,325
Clinton Twp... north of Deetro...
Bill..I'm running a 29"x9" slick...with good traction,the front tires leave the ground.

Re: what will it run?? [Re: MRMOPAR622] #985876
05/04/11 12:58 PM
05/04/11 12:58 PM
Joined: Feb 2005
Posts: 5,221
Branson, Mo.
J
joedust451 Offline
super gas
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super gas
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Joined: Feb 2005
Posts: 5,221
Branson, Mo.
Should run in the 10s, I agree with Labratt, 3900 lbs. seems a bit steep, unless your 350 lbs. , It'll run better with a 4.56 gear & a 29" tire, The 950 is a smaller carb then the 4781 850, I think the 850 will work good, but like mentioned, A 1050 Dom. should work better with those heads/cam.


75 Duster, 451 10.87 @ 123.58 NA 97 Z28 6sp., 12.01 @ 115 on a 100 shot 71 Swinger. 360 magnum. 12.58 @ 105 78 cutlass, 469 BBC. 12.70 @ 108 on street tires. http://www.youtube.com/watch?v=Z2kqNmMfheU
Re: what will it run?? [Re: joedust451] #985877
05/04/11 02:07 PM
05/04/11 02:07 PM
Joined: Sep 2009
Posts: 2,325
Clinton Twp... north of Deetro...
L
Labratt Offline
Good Ol Randy B!
Labratt  Offline
Good Ol Randy B!
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Joined: Sep 2009
Posts: 2,325
Clinton Twp... north of Deetro...
with Joe!

Re: what will it run?? [Re: Sport440] #985878
05/04/11 02:31 PM
05/04/11 02:31 PM
Joined: Oct 2007
Posts: 3,978
Hilltown Pa
1967dartgt Offline
master
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Posts: 3,978
Hilltown Pa
Quote:

Quote:

I'm curious what everyone thinks our roadrunner will run with this new combo?

70 rr. 3900#, 440 12.5 to 1 compression B1/brodix heads, 696 roller 850 holly double pumper M-1 intake.5000 stall 4.86 gear.super stock springs 29.5/10.5x15 slicks

hope to get it out in the next week or so and will know for sure.





With your overall gearing the best that you can run is about a 10.60 to 10.80 @ 7300 to 7500+ RPM




WHAT? How much convertor slip does he have 50%? Have gone wat faster then that with the same gear and smaller tires and turned that rpm.


Brett Miller W9 cnc'd heads
STR Chassis fabraction
Re: what will it run?? [Re: Labratt] #985879
05/04/11 03:16 PM
05/04/11 03:16 PM
Joined: Dec 2003
Posts: 1,153
Adrian, Mi
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pro6pakRR Offline
mopar addict
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Adrian, Mi
Quote:

Doug...3900lbs.??? I hope that's with your dad in the seat! Even then,that seems real high! My GTX,with me(235lbs.)in the seat,weighs 3735lbs. Where did you guys get it scaled...Milan? I'm skeptical about that weight!



Randy that was with me in car.I went about 250 at that time.I weighed it at Milan and 131 and both times it was within 25#.We have a 10 point M/S cage and it's all steel with all it inside still there. And as you can see in the picture we got a little air on a easy leave,about 3000rpm.

Re: what will it run?? [Re: plasticfantastic] #985880
05/04/11 03:51 PM
05/04/11 03:51 PM
Joined: Jan 2003
Posts: 16,916
NC
440Jim Offline
I Live Here
440Jim  Offline
I Live Here

Joined: Jan 2003
Posts: 16,916
NC
I was thinking 11.00. But the porting on the B1-BS heads makes all the difference from Edel RPM to Indy EZ.

That is a lot of weight to move.

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