Re: Ran 11.44 @117.69mph
 

I run a solid roller 489 BB, it dynoed at 640HP, 620trq. with a too small 750 carb. I now run a 850 Mighty Demon and have a NOS Cheater system. In ran a 11.72@115 with a 1.72 60' at the last street drags on motor spinning a bit at the start. My coil over springs were a bit too light and I was bottoming out when I launched causing it to bounce. It was hard to get a good run in the other night after the rain it was hot and muggy, I was running 12.01 and not impressed. On the 11.44 I ran a 100shot in second and drive, it was the first time the motor saw nitrous so I ran it rich and backed out some extra timing so I was not expecting that large of a gain. Well low and behold it hooked good and ran a little quicker than planned.

I'm pretty sure on a regular race day I would be around the 11.5's to 11.6's on motor. So I'm thinking 10's on a 150 shot should be a reasonable expectation. I too would like to keep the stock appearance, but a roll bar is a must. The truck will all-ways be street legal, but I don't drive it that much and racing gives ME more enjoyment than cruising, so not that worried about the 2 bars going out the back window.

Re: Ran 11.44 @117.69mph
 

Hey Jim, since they forgot to send me my NHRA rule book last 2 times I ordered parts. Would you happen to know the rule on tranny and flex plate shields?

Re: Ran 11.44 @117.69mph
 

By the way Thanks guy's.

Monty.

Re: Ran 11.44 @117.69mph
 

thats fast

Re: Ran 11.44 @117.69mph
 

Another thing to keep in mind with his truck is that it would even faster closer to see level. What is the altitude in Sask?

Re: Ran 11.44 @117.69mph
 

Not too bad, little over 2000 I think? Hoping to make it to Medicine Hat next weekend, they have a new concrete launch pad it's suppose to have bite.

Re: Ran 11.44 @117.69mph
 

10.00 and below need sfi sheilds, unless the firewall is not stock. 10.99 and below you need aftermarket axels/or C clip eliminators. 11.49 to 10.00 need a 5 point roll bar and sfi fire jacket.

Here is the online rule book
http://members.tripod.com/MY5LTR/NHRArules.html

Re: Ran 11.44 @117.69mph
 

Thank's Jim.

Re: Ran 11.44 @117.69mph
 

2000 ft is pretty substantial though. According to NHRA's website at sea level you would be running 11.17 @ 120.52 at sea level. This is not really important at your track because obviously everybody is at the same disadvantage. It's just cool to see what would run at a track like Montgomery Motorsports Park or Silver Dollar in Georgia because they are only 400-500 ft. Here is the NHRA's conversion chart if you want to check it out.

http://www.smokemup.com/auto_math/nh...on_factors.php

My brother's '78 GMC has run a best of a 11.98 @ 112.11 (7.58 @ 92.86 in 1/8) with a 1.71 60' on motor with much less engine than you have. We'd only be in the mid 12's at your track. Here is link to his truck if you wnat to check it out also. http://www.bassettracing.cz28.com/photo2.html

Re: Ran 11.44 @117.69mph
 

Man! 71Dragtruck you and 57sailplane have big boy trucks. Good job on the run.

Re: Ran 11.44 @117.69mph
 

Nice truck your brother has there, I'm allways interested in checking out other drag trucks. Would be nice to make a couple of passes at a near sea level track. But it is cool when you line up against a 440 procharged Challenger, stripped interior, roll bar, open headers etc. and then the look you get when you beat him, PRICELESS. Icing on the cake is when he asks later how big a shot your running and you tell him that was just motor.:lol:

Re: Ran 11.44 @117.69mph
 

Which rule would apply, they have 2 different rules, or has it to do with stock floor boards.

Under general:


2.14 TRANSMISSION, AUTOMATIC

Any non-OEM floor-mounted automatic transmission shifter must be equipped with a spring loaded positive reverse lockout device to prevent the shifter from accidentally being put into reverse gear. Functional neutral safety switch mandatory. All transmission lines must be metallic or high-pressure-type hose. All vehicles running quicker than 9.99 seconds (*6.39) or faster than 135 mph (217.2 km/h) and using an automatic transmission must be equipped with a transmission shield meeting SFI Spec 4.1 and labeled accordingly. "Blanket" type shield, appropriately labeled as meeting SFI Spec 4.1 permitted. All non blanket type shields must incorporate two (or one, per manufacturer's instructions) 3/4-inch (19.1 mm) x 1/8-inch (3.2 mm) straps that bolt to the shield on each side, and pass under the transmission pan, or transmission pan must be labeled as meeting SFI Spec 4.1. Permitted in all classes where an automatic transmission is used. 9.99 (*6.39) or quicker ET cars, and 135 mph (217.2 km/h) or faster ET cars using an automatic transmission must be equipped with a flexplate meeting SFI Spec 29.1 and covered by a flexplate shield meeting SFI Spec 30.1. Air shifter bottles must be stamped with DOT -1800 pound (124 bar) rating (minimum) and be securely mounted (i.e. no tie-wraps or hose clamps.)


Or would it be this?

Under SECTION 1A
E.T. SUPER PRO, PRO, SPORTSMAN

7.50 (*4.50) seconds or slower:


2.4 TRANSMISSION, Automatic

Spring-loaded, positive reverse lockout device and functional neutral safety switch mandatory. Transmission shield meeting SFI Spec 4.1 mandatory on any car running 10.99 (*6.99) or quicker or any car exceeding 135 mph (217.2 km/h). Automatic transmission flex plate meeting SFI Spec 29.1 and flex plate shield meeting SFI Spec 30.1 mandatory on cars running 9.99 (*6.39) or quicker or any car exceeding 135 mph (217.2 km/h). See General Regulations 2.14.

Re: Ran 11.44 @117.69mph
 

hey 71 drag truck here are some pictures of the cage welded to frame underneath cab. if you need anything else let me know.

Re: Ran 11.44 @117.69mph
 

Thank's, that's a serious cage you got going there, you must be planning on some 9's.

Re: Ran 11.44 @117.69mph
 

yes i would be happy with low 9's since i am running a sbc 383 with nos. my combo might not be as large as yours but i hope it will go the distance.. i built it expecially for nos.. cam pistons and even heads were ported profesionally for nos.. anyways the weight thing is what i am looking at now. thats why i was wandering what your truck weighed.. anyways keep us posted on what your doing cause alot of us wish we were racing...

Re: Ran 11.44 @117.69mph
 

You guys make me miss my old stock weekend warrior, ran a whopping
9.556 in the 1/8 on wore out Hoosier quicktime tires, btw mine weighed
in at 3,400 lbs, no inner fenders, and no tailgate, and full bench seat ;)

Re: Ran 11.44 @117.69mph
 

You know I don't know. I'm running 10.20's on N20 and they haven't said anything about a trans shield. 10.99 on motor alone so I better find out b4 I go to a real track. My track is 550' above sea level but the DA is always over 4000'

I know I could get into the 9s but I'm not licenced or the truck isn't speced to run below 10.00

Re: Ran 11.44 @117.69mph
 

What's yours weigh again, and are launching on a trans brake? I'd love to be running 10's on motor, doubt I'll ever run as fast as you. I,d have to lighten it up for sure, or go to a 540 next re-build, just need the block and pistons.

Do you have a DA chart, or how do you figure that?

Re: Ran 11.44 @117.69mph
 

3500 wit my fat azz. I leave on a brake chipped at 4000rpm with a 5500 stall. 4.86 gears with 32x14-15 slicks. Im swappin converters this week. Going with a 8" ATI instead of the 300 dollar Torco. I'll see if it picks up as much as I think. In bracket mode I leave easier and short shift and run 11.33 at 115. It just dosen't MPH good at all. I will be going BBC next year.

http://imagehost.bizhat.com/users_th...b_dv_scott.jpg

Re: Ran 11.44 @117.69mph
 

what you going through the traps at? Motor and with nitrous, I was going to go to a 31" tall tire and a 4.30 gear. I have a 29" and 4.10's now, go through at just under 6000? ( have to run on a better night to make sure ). When I ran 28" tires it was going through at 6200. I'd like to take off 200lbs. to make up for my fat azz LOL.

Re: Ran 11.44 @117.69mph
 

7200 rpm at 125mph The converter is too loose for N20

Re: Ran 11.44 @117.69mph
 

That's BADAZZ, you have to get some video for us.

Re: Ran 11.44 @117.69mph
 

Thanks. No matter how many times I see it, it is PRICELESS to watch this ol' truck sneak up on some unsuspecting Mustang or Camaro. My brother drives this truck around town a good bit, and lot of people who haven't seen it run just assumes since it street driven that it isn't really fast.

We are planning on a cage in future for his truck, because with the cheater shot, he is creeping up on high 10's. We are going to freshen up the engine this fall, and probably go with a solid roller. Here are a few old scanned pics when we built the truck. It was STUPID FUN driving it around with the front clip and bed off!!

Re: Ran 11.44 @117.69mph
 

When I take her to the track she really shines
She always turns in the fastest times
My four speed dual quad posi-traction 409

Re: Ran 11.44 @117.69mph
 

hey bigjimzlll i noticed you a said somthing about a bigblock next year. what you runin now? did you remove the radiator suport to get her down to 3500lbs? by the way this is a bad a## thread..