:ball: :rant: :rant: So today was a very crappy day. I was all stoked and pumped up about running my car for the first time at the track since starting to do all the work on it last august.On the way to the track my car overheats so we pull over let her cool off and take frontage roads to sacramento raceway.Get there sing in and go to tech the guys like "o wow nice car dont see many old buicks here mostly turbo regal and gn's"So I was like:TU: but then I get kicked back because im missing a lugnut!!:blast: Not really a big problem but my lane was comeing up for runs so I run up and down the lanes looking for someone who might have a spare I got lucky a guy with a badass 72 chevelle had one,but by the time I got it my lanes had allready ran! SOO finally I get to run and I get paired up against some nice old guy with an aluminum v-10 dodge srt 10 pickup. I was like greeeaaat well hopefull ill give him a run he had 12.90 on his window so I get up go to do my burnout do a pretty good one,my car dies when I let off the throttle!Get it started and stage the run goes. Reaction: .340 T1 2.405 T2 6.771 T3 10.483 T4 13.714 E/T 16.507 MPH 80.596 http://www.youtube.com/watch?v=JvGzieQ0dMk WHAT THE HELL!! A 16 i could not beleive it I have spent so much time and money on my car and I run a 16!!!! There is a video of that pass. Second pass I shifted it ran 16.1 heres a video of it. http://www.youtube.com/watch?v=JinadPEhpEY You guys on this forums have all given me so much help and insight on how to crack 12's or beat my friends cobra but I surely thought with my current build I would crack 14's!!!! Well sorry again for the extra long post just had to explain everything. Also I met a guy at dennys tonight said he is on our forums and is from lathrop ca you gave me your number but I lost my wallet so if you see this pm me please thanks
Did you figure out why your car overheated on the way to the track? Perhaps that had something to do with your times. Also, what mods did you do to the engine?
No idea man. Um I have done lots to my car Engine 72 350 bored .30 over 10:1 compression comp 268h cam lifters push rod and springs mallory unilite distibutor and ignition box 140 amp alternator and optima red top battery 650 cmf holley q-jet replacement carb and Ta intake 3 angle valve job and mild porting on the heads and intake my shop teacher didnt want me to do too much and screw em up. Trans Full rebuild B&M transkit built to the drag specs deep pan and tranny cooler B&M sprag new thrust washers planetary gears and all the that. Suspension New summit disc brake kit 1" drop spindles new moroso springs rear end some napa air shocks gm clutch type posi unit with yukon 3.73 and a rebuild kit from monzaz Tires BFG radials 235/60R15 on some american raceing rims<!-- / message -->
You definitely have something amiss... I had a basically stock 72 GS motor with a good carb,MSD ignition parts and a fresh tuneup that I ran 15.40's-15,50's with and drove it to the track. It was a daily driver car as well. Car was a 70 GS (with 72 GS parts instead) with a 4 speed and 3.42 gears..
o No: I know! Its my daily driver as well this was the first time it has overheated on me since I have owned it in 2005.On paper it should not overheat I have a new water pump new 190 degree thermostat I just did a coolant flush and a huge flex fan.It didnt overheat on the way back either
techG8 you can kinda here my car on the second video not until the end when this crazy 9 rx-7 was doin his burnout.
I don't know why you would run a 190* thermostat. The engine won't run cooler unless the thermostat lets it. That engine will want to run at about 200* with that stat. Also, what is your total timing? The engine is definitely down on power, you only had an 80 MPH trap speed and that tells the story. It should be at least 10 MPH higher. Also, you need some sticky tires. A good ET requires a good 60' time. Trying to run the car on street tires will prove very frustrating. Was the cam degreed in? Put a good Q-jet on there, 650 is too small.
I wonder if the secondaries were even opening? Did you feel them going down the track? Im pretty sure that Holley is a vac secondary. Whats the list #? 0-6510? I thought the same thing when I read about the carb Larry. I bet a 750 double pumper or a nice Q-Jet alone would wake it up.
What about the trans converter? What is it? Your over heat problem may be a bad distributer To me your car hasnt got the combination right yet. My daughters stock 350 @ 3000 feet of air went 15.05 with 293 gears and no posi.
I like the idea of a 750 q-jet as well. Keep in mind as others have stated, it's not just a matter of bolting on the parts...that's actually the easy part. Now you have to systematically begin tuning the ignition advance curve and the carb mixture including secondary opening rate. You'll have to resist the desire to change several things at once, though...the only way to know what's happening is to change one thing at a time and record the results. The frustrating part however, is that a new advance curve may dictate carb tuning, which may dictate tweaking the timing again. It's really not that bad of a vicious circle; with patience you'll get everything working together nicely. Then the fever will grab you again, and you'll make another improvement for more power...then start tuning all over again! We do have a sickness, that's for sure! Devon
What about tuning? What is your total timing? How is your carb set up? Do you have headers? I think they'll get you a lot more benefit than just throwing a too-big carb on there. -Bob C.
Just woke up. I have the 650 holley on there becase when I was in Iraq my dad put it on he told me quadra jets are are horrible carbueretors and I didnt know any better and did not have the internet yet over where I was.My total timing is 34.I have 2400 B&M torkmaster stall converter.I have hooker super comp headers goin to a 3 inch x-pipe and flowmaster 50 series mufflers.HEre is a thread to the carb I have right now http://store.summitracing.com/partd...890854+4294925239+4294839063+115&autoview=sku Did you guys see the videos though that srt-10 roped me I had a better reaction though.Man what a bad day car runs like crap then I lost my wallet at denny's
Sometimes the mixture can go very rich after you close the throttle, and it will stall. That isn't what concerns me. Your trap speed of 80 MPH tells me the engine is down on power. The trap speed should be higher than that even if you spin the tires for 100'. Are you sure the cam is in right? Are you sure of your total timing?
