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1/4 miles times & basic motor/tranny/rear specs

I.E horsepower, tranny type, rear gear.

and anything else you want to brag about:lol:

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68 short fleet, all steel, street legal, through the mufflers, all throttle no bottle. best 1/4 mile: 11.91 @112 mph iron headed 406, muncie m-21 4 speed, truck 12 bolt with 4:88 gears. Dev.

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67 long fleet..540 850HP N/A 9.60 @ 140

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1963 Short Fleetside
LS1/4L80E 428rwhp through the mufflers
4,400 converter
12 Bolt w/ 3.73's
30x13.50 ET streets

Last time at the track with a 3,200 verter, 26" drag radial, 410rwhp and weighing in at 3,840 with me in it, it went 12.33 @ 110 on the motor..

Hoping for 11.80-11.90 next time out NA and 10.70-10.80 on the bottle.

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431 big block aluminum rods, 373 gears with 3800 stall best time so far 11.37 and getting faster.

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383 SB, Twin MPT70 turbos, CSU 850 carb
Self built TH350 w/ 3800 UCC converter
9 inch w/ 3.70's out back and 315/60/15 MT Street Radials
4150 lbs

Pump gas drive anywhere tune went 10.91@123

A little 110 mixed in and a little more boost with old tiny little T4 turbos it went 10.62 @ 126 spinning.

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1971 GMC LWB
489BBC
4373lbs. with driver
10.77@124mph around 3975'DA

Have ran faster but was bracket racing and had to go hard on the brakes. Going off 60' and DA that day and way it was pulling thinking it was in the high 10.6's. This year planning low 10s at local NHRA track, and hoping for a 9sec time slip at outlaw track just to say I have with proof in hand.

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72 LWB
468 w/150 shot
TH350
4.56 12 bolt

7.36 Best 1/8th ET with a 4.10 rear. Haven't ran it with the new rear yet. I'm putting a nice 496 together for it as we speak.

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Are you squeezin that heavy dude?

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Running a 150 shot right now, will likely go to a 175 shot for bracket racing with that and banking on my new carb and fuel system to take care of a few issues I was having to put me in the sub 10.5s. As far as the outlaw track thinking really hard on trying a 250 shot run and see if that's enough or not, might not be but trying to be optimistic.;) It'll happen some day, 2 year plan for a all aluminum BBC 540 or bigger shooting for at LEAST 750hp motor with a 4150 and 11:1 or less, once again might be a bit optimistic.:lol:

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Nope...not optimistic at all, you can get close to 730hp with a 496 on pump gas with a 4150. Oh yea, off the shelf parts and unported heads.


However, I was thinking you might be a little on the sarcastic side...lol

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Ok...umm....I call BS. While 1.4 HP per cubic inch can be done with out a ton of work, I'ts not going to happen with shelf parts and pump gas and a baby 4150 carb easily. Maybe with some 315cc AFR cnc heads, 11-1 CR a nice solid roller and a 150 shot. My bud has a 505 with 12-1 and eldebrock roval heads, solid roller... a pretty nice combo over all. Dyno'd at 645HP

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OH YEAH!...I have a freind who's uncles friends brother just so happens to have a 60somehtin Impala with a 327 with 600 horses and it runs 10 flat..................JUST KIDDING! JK JK JK JK JK JK JK....

Seriously though you guys have some very IMPRESSIVE trucks. Great Job to alll of you. I am envious. After my kids(2yr old and a 2mo old)get a little older, then I will start a drag car/truck project.
-Lance

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http://www.carcraft.com/techarticles...ild/index.html

A good tuner can get 720 or so out of it.....box stock carb with nothing more than different jets, unported afr 305's and off the shelf cam offered from jegs.

Imagine what the afr 325 CNC head will do.....750?

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I hate to say it but 645 from a 505? 12:1 and solid roller......there is something very wrong with that picture. Needs a different head if you ask me.

Here is another one for ya .... this one makes less power but it is also hydrolic cam and a different set of heads with an airgap.

http://www.popularhotrodding.com/fea...lle/index.html

720 or so is very doable with off the shelf, pump gas components.

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That was on a REAL dyno,not some made up..need to sell parts...magazine fiction story.
Yes the heads are the limiting factor. How much does the GM 572 make?

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My 431 big block iron head rectangle port dynod 684 to the flywheel on a real dyno and a proform 950 carb with a 680 lift solid roller. Bought my motor from awsome engines.

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The GM 572 crate is a turd and designed for a warranty. I'd be willing to bet anything that with a good tune and the right parts combo, it makes well over 720. I did not know the magazine articles used fake dynos.......

720 on pump gas with off the shelf parts from a 496 is very doable and I'm not justifying the articles......what makes that so hard to believe? I saw a 509 with a small flat tappet cam unported 990's make 600hp @ 9.5:1 cr.

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Those ar great numbers. Have you ever raced it? If you have I'd love to see the numbers. 684HP would put at about 125mph in the 1/4

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I appologize for being so snippy. It's just one of my pet peives. Magazines and TV shows inflate their numbers...it is well known. They have to sell the parts they install. If it didn't make good numbers who would buy them?
They are not fake dynos. Anyone using a dyno can make it say what ever they want. Just be fudging the correction numbers. This how Ebay dealers sell 700HP BBC for 5grand..It's complete bull and it pisses me off.

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according to online calculators it says your making 500HP
Your Horsepower computed from your vehicle weight of 4000 pounds and MPH of 115 is 500.00.

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Haven't even played with the jetting yet, and it might do 125 in the quarter if it wasn't almost a 4000 pounds and the aerodynmics of a school bus.

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I do believe that some folks lie to make a sale ..... especially on sites like ebay. But I have read so many stories of a radical 496 I just couldn't believe that setup didn't make much power. It's a very popular combo. JMO

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I believe that's mabey 500 to the rear wheels i don't believe those online calculators anyway because you can get alot of differences. I also believe that my truck should run better with those kind of numbers, but i think some of the problem is traction, tunning etc.etc. I think there's 11.00 in this thing, and if i dip in the high 10's i don't really care how much hp i'm making, that's fast enough for me.

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you don't have to tell me about aerodynamics of a bus. Mine weighs 3450 wit me in it. I just go a little over 140mph. Thats with a 800HP bbc. The engine made 850 on the dyno, but the 800hp is with baby 2" headers and a safe tune up.
The online calcs show your at 500hp at the flywheel at sea level right now. Do you live at a high elevation?

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The calcs can be off.They are for flywheel...not rear wheel. The one I use is dead nuts on my combo. Dosent mean it is on yours however.

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According to you're numbers my truck weighs about 500lbs more which on a rule of thumb = .5tenths and you're motor =120 more hp which should be around 1.2 sec. which would put my truck in the 10.6 give or take. I'm not understanding why this thing is not running like it should. Mabey it's my headers, traction, jetting, i get a little upset wondering if mabey my dyno sheets are b.s. My engine sound great, plugs look good, just don't know.

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were do you find the online calc.?

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Here are a bunch of different Calcs..

http://www.wallaceracing.com/Calculators.htm

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I had one that was balls on for my truck and the track where I race at one time but the web site went down. I also had one back in the Windows 95-98 days that used frontal area, chassis type, DA, etc. But never had my truck at the track then to see how accurate it was.

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I went through the Wallace calculators and If use my estimated rear wheel HP they work out real close to my stats. If I use crank #'s from my dyno sheets they are way out. Now I take dyno numbers with a grain of salt and I've read just as many dyno articles on how the numbers are corrected and worked to read REAL good. I'll look for it and try my best to find one in Car craft or Hot rod can't remember where, but they even admitted to it, and had complaints from people that built those motors and made nowhere near the power they made.

That being said, I dynoed my motor mainly to break it in and to do a bit of timing and carb tuning to get it close before I hit the track. The place that built my motor crushed all my dreams of following a magazine high HP build the first day I spoke to them about building my motor and basically told me if I wanted to see those numbers that another shop would more then likely do it with their dyno but they had a more realistic approch and if I expected those #'s I would be dissapointed with their methods.

I went with their method and saw lower then the magazine builds on the dyno, but it made what was estimated by the builder. And with the parts I put into my motor I don't think that what it makes is BS. As far as online calculators well they are for fun, real numbers are made at the track, and are effected by many things, DA, traction, converter slippage, correct gearing, frontal area, wind direction, the list goes on and on.

TOO many times this discussion comes up with HP numbers and who's motor makes what on the dyno and this magazine made this power with this combo, and one guy spent $8000 less then another guy and makes more power and and he just had to bolt it together and on and on and on never ending like my post. And in the end everyone has their veiws and opinions like holes and strings, aresholes and yo-yos.

And I'll admit when I see a claim of HP from a combo that I know isn't making it I cringe and it's hard to control posting up a call out of BS. And I know of other members that have the same problem cough" JIM "cough. And it's not that I want to burst bubbles and start crap, just trying to keep it real for others that may be spending money and looking for results they aren't going to acheive.

This will be my last opinion, rant or comment on this subject, so I figured I'd make it as long and boring a ramble on as I can, if your annoyed by reading through all this garble well that's how I feel after reading a engine combo that is likely making 100 less Hp then is claimed. I know a guy who's motor made over 1000hp on the dyno with a 250 shot, then ran a 9.66 at the track in a 3500lb. car, hmmm wonder why he now twitches when he says his engine bulders name??? His other set up of alot less power ran 9.97. I'd say start looking at the total power curve and average power and torque, spend alot less time with peek HP numbers, he had a good dyno combo but poor car combo for starters.

Have a good one!:devil:

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Lol....yea I need to start takin my meds. Sometimes I should just bite my tongue. Hi, my name is Jim and I have a probelm. I can't keep my nose out of other peoples engine combo's.
I hear admitting you have a problem is the first step...so...

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Well how about I build it and take it to a dyno and get the real scoop....sounds good to me :)

Lets not forget about it :)

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I am following this build and I already have the shortblock. Lets have a mythbusters OUR way and I will tune it MY way :)

http://www.carcraft.com/techarticles...ild/index.html

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I plan on taking my truck to a chassis dyno and try to tune on it sometime pretty soon. I think some of my problems is my 3800 stall converter and my 373 gears, 1 3/4 headers, and the need for some drag shocks.

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69 Chevy S-wide . Old motor Iron block 638 15.5 to 1 Brodix Big Duke heads , Hogans sheetmetal ram two Gary Williams Dominators 1224 hp @7500 930 tq @ 6100 . TH400 tranny 6500 plus stall , 456 gears . 32inch tire , 3800lbs with me in it . 8.93 @151.00 , 5.71 @123.00 ,10.90 @ 149.00 in Super Street .

New motor Brodix alum block same everything else , runs the same on the throttle stop . Weighs 3700 with me in it now .

We are going to Red River in Shreveport tomorrow (3-15)to see how it runs wide open . I haven't made a wide open pass since Dec 05 . I'm gonna have some fun tomorrow !

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Man that thing hauls da mail. I MPH at 137 in SST trim...and I'm usually in the fastest half of the field. I'm switching to alcohol this year and I've lightened it up some...so maybe 140 in sst trim.

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The alchohol should really help you with the extra tq you will make . Something else for every tenth I kill in the 60 I pick up 1 mph . I have been trying to run 150 or better on the stop for three years now and it has been elusive ....When I built the new motor I had to change cams becuase I went to the 55mm roller bearing deal . Well I went the wrong way on the cam I went with more lobe seperation hoping it would run harder up top but it killed the bottom end too much . This year I got a high dollar 10" converter and hadnt seen alot of change yet (just the trap rpm). I may get it there with this combo but dont know. I know this 10.6 deck block will take a 5 inch crank though . Maybe a 665 will do it .lol......It never ends !

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I think this should make a good combo but I might rethink the heads! I thought about Afr's and talked to some folks that said Afr's bb dyno numbers were inflated. I have too much head for my 468 that's why I want to stuff it with two stages of nitrous. Until I can build a 565! I went the the brodix bb3extra's and I have heard of some really good combos using the round and square port versions of these heads! Just my opinion and you know what those are like!:chevy: