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Need some constructive criticism...
#800907
09/14/10 02:21 AM
09/14/10 02:21 AM
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Joined: Feb 2003
Posts: 4,436
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BB70DUSTER
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So like everyone, I wanna go faster... heres my current combo, I have a good idea where I need to make changes, but would like more ideas... so here it is. 70 Duster, 3250 Lbs race weight, leaf spring, caltracs, ranchos, 10" tire, car hooks hard... 3.73 gear, 727, no trans brake (I leave on the bottle) converter is a 10", built for the NOS, engine is a 440 based 496" JE flat tops (10-1 comp), LY rods, steel crank, solid cam, .600 lift (w/1.6 T&D rockers) heads are unported, ootb Edelbrock RPMs, Victor intake (stock) and a 850 Holley DP carb... exhaust is hooker 2" fenderwell headers with 3" exhaust and flowmasters, Ive never ran it on motor, only on the bottle, runs consistant 6.20-6.23 @113 in the 1/8th, Nos system is a big shot with 82/91 jets, and 5.5PSI fuel pressure, I run it on the bottle with 100 octane... So thats what I have, heres the kicker, I drive the car regularly on the street, on 91 octane pump gas, I have no intent of running it on motor only, Im a bottle baby, car was built around that... so lets hear it...  Thanks in advance! 
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Re: Need some constructive criticism...
[Re: BB70DUSTER]
#800908
09/14/10 03:28 AM
09/14/10 03:28 AM
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Joined: Aug 2005
Posts: 1,175
where its cold and white durin...
2QUICK4U
super stock
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super stock
Joined: Aug 2005
Posts: 1,175
where its cold and white durin...
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I DONT THINK THOSE LY RODS WILL LAST VERY LONG IF YOU AD MORE NOS,ID GO TO A BETTER ROD AND BETTER CYCLINDER HEAD.I MAY BE WRONG HERE,PUT A BLOWER ON IT.THAT MAY BE A CHEAPER WAY TO GO.IVE SEEN THIS CAR FOR SALE FOR SOME TIME.IF I WASNT LOOKING FOR A FULL TUBE AVENGER,ID BE LOOKING AT THIS CAR.
Last edited by 2QUICK4U; 09/14/10 03:29 AM.
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Re: Need some constructive criticism...
[Re: moparguy7074]
#800911
09/14/10 08:18 AM
09/14/10 08:18 AM
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Joined: Sep 2006
Posts: 411
Portersville, Pa
1badx
mopar
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mopar
Joined: Sep 2006
Posts: 411
Portersville, Pa
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Quote:
Port the heads, bigger cam--roller, bigger carb. 
I agree. A roller cam would bring that engine to life.
What type of ignition are you running? Fuel system? I would also be keep an eye on the crank/main caps at that HP level with nitrous.
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Re: Need some constructive criticism...
[Re: BB70DUSTER]
#800912
09/14/10 08:46 AM
09/14/10 08:46 AM
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Joined: Jan 2003
Posts: 13,369
Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
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You could start w/ the smaller stuff first. At this level, I don't think the 3" flowmasters are helping. Try it w/o the mufflers, or swap to some straight through mufflers like Dynomax Ultra-Flows or Magnaflows.
I'd get an adapter and try a 1050 dominator on it like it sits.
After that I'd tear into the motor. Either port the Edelbrocks or step up to some ported Indy -1 heads. Change to a bigger solid roller spec'd to compliment the heads.
All along you're on borrowed time w/ those LY rods, but I'm sure you know that.
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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Re: Need some constructive criticism...
[Re: 1badx]
#800916
09/14/10 10:42 AM
09/14/10 10:42 AM
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Quote:
What type of ignition are you running? Fuel system?
Ignition is a 6A box, has a single satge retard, Blaster 2 coil... have a 7AL2 thats going in soon...
Fuel system is a Magnafuel 300 on the engine side, modded holley blue on the oxide side, have a magna fuel 500 pump that may replace both very soon...
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Re: Need some constructive criticism...
[Re: 2QUICK4U]
#800917
09/14/10 10:46 AM
09/14/10 10:46 AM
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Quote:
I DONT THINK THOSE LY RODS WILL LAST VERY LONG IF YOU AD MORE NOS,ID GO TO A BETTER ROD AND BETTER CYCLINDER HEAD.I MAY BE WRONG HERE,PUT A BLOWER ON IT.THAT MAY BE A CHEAPER WAY TO GO.IVE SEEN THIS CAR FOR SALE FOR SOME TIME.IF I WASNT LOOKING FOR A FULL TUBE AVENGER,ID BE LOOKING AT THIS CAR.
Im aware of everyones feelings on the rods, but Ive squeezed more on less... LOL Blower is out, I already got rid of it, besides I love the bottle hit... yeh, Ive thrown around selling the car, but have been firm, and havent tried very hard to sell...
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Re: Need some constructive criticism...
[Re: an8sec70cuda]
#800918
09/14/10 10:52 AM
09/14/10 10:52 AM
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Posts: 4,436
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Quote:
You could start w/ the smaller stuff first. At this level, I don't think the 3" flowmasters are helping. Try it w/o the mufflers, or swap to some straight through mufflers like Dynomax Ultra-Flows or Magnaflows.
I'd get an adapter and try a 1050 dominator on it like it sits.
Chip, I tried a 1150HP on it, and had no gains, have never ran without mufflers because its a street car, BUT, I have been thinking of a exhaust change, I have some 2 3/8 pri Dawson headers, as well as a new set of pro-parts headers, and thinking of some 3 1/2 pipes, and possibly spin-techs (again because I already have them)
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Re: Need some constructive criticism...
[Re: smokinwoody]
#800919
09/14/10 10:55 AM
09/14/10 10:55 AM
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Quote:
sounds like the car is running pretty good for what it is...
then attack that rear..if thats an 8 3/4, it will need beefing or get a DANA with some 4.10's, 35 spline axles..spool is good but a drag on the street...maybe a locker
we all like that word..BULLET PROOF
Thanks, I think it runs good for what it is too, just want more... Rear end is a 35 spline Dana 60 already, with a spool, 1350 yokes, 3 1/2" alum driveline, etc...
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Re: Need some constructive criticism...
[Re: RedCharger]
#800920
09/14/10 10:56 AM
09/14/10 10:56 AM
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Quote:
I would look at replacing the rods and turbo it with a big single use a blow through carb setup to keep the costs down.
The NOS will help the turbo spool, keep all the other parts and it should haul !!
Just my two cents
Mike
I WISH!!! Id love to turbo my car, just think its out of my price range... 
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Re: Need some constructive criticism...
[Re: Big Squeeze]
#800921
09/14/10 10:59 AM
09/14/10 10:59 AM
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Quote:
The real question is; How fast do you want to go? 
If it were me, and since you're a bottle baby, the cheapest thing would be to put a set of nice rods in it and fine tune your nitrous........82/91 jets.......and I'm assuming that's 82 nitrous and 91 fuel?......If so, you have quite a bit of room on the table in the tuneup........but I'm sure you have a stock block, so that's the next weakest link.......
Honestly, Id like to see low 9s or high 8s, and remain small tire on leafs, your correct on the jetting, its a by the book tune, Ive tried some NOS tuning and always end up back at square one because plug reading look lean if I take away any fuel... (either by pressure or jetting) But Id like to put more nitrous to it... 
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Re: Need some constructive criticism...
[Re: BB70DUSTER]
#800922
09/14/10 11:25 AM
09/14/10 11:25 AM
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So, sounds like everyone agrees, bigger heads, roller cam, and bigger carb? Any guesses as to how much ET gain I should expect? Im thinking Indy 440-1 heads, the 1150 carb I have, bigger exhaust, and still on the fence on a cam change... Thanks so far, keep it coming!
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Re: Need some constructive criticism...
[Re: BB70DUSTER]
#800923
09/14/10 11:37 AM
09/14/10 11:37 AM
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Joined: Apr 2004
Posts: 12,339
somwhere
smokinwoody
I Live Here
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I Live Here
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Quote:
So, sounds like everyone agrees, bigger heads, roller cam, and bigger carb? Any guesses as to how much ET gain I should expect? Im thinking Indy 440-1 heads, the 1150 carb I have, bigger exhaust, and still on the fence on a cam change...
Thanks so far, keep it coming!
my guess...with good flowing heads and CAM CHANGE and tune..there should be at least another 150hp ..that should drop you in the 5's..especialy with spray....be one quick street machine...
may want to consider E85 fuel too...Im going to switch over..
my 499 has good flowing heads and all the goodies for a good race engine but now I want to build something for the street using that engine...Im going to have the cam reground(roller) for better manners and use E85 since the compression is 12.8...should still make 700+ hp...in a 2500lb machine that ought to be fast enough
and NO NOS
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Re: Need some constructive criticism...
[Re: BB70DUSTER]
#800925
09/14/10 04:32 PM
09/14/10 04:32 PM
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Joined: Jan 2003
Posts: 13,369
Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,369
Marion, South Carolina [><]
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Since you aren't worried about the rods, I'd try the exhaust system first b/c it's easy. Change mufflers, or run open headers just to see what happens. The bigger headers should help when you step up the spray. Since you're planning on more spray later on, I'd put the big headers on it now. Next thing is definitely the heads. If it were me, I'd sell your Edelbrocks and get some ported Indy -1 heads from Dwayne Porter w/ a cam to match. I'd put that 1150 you have on it at the same time. Just my
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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