last year i ran a 14.220 with a 2.79 gear.. i just rebuilt a center section with 4.11 gears.. i know my 60' is gonna suck, because of the rapid acceleration at the start, but i think my time will be better... high 13's.. but it also depends on weather and how my carb is running as well it is supposed to snow tonight.. so not sure if this weekend is gonna be an opening day or not right now
ST..I don't see us equaling, much less bettering your time. I'm sure your car is a bit lighter and I think that's an exceptional time for your combination. Someone commented about my tall tires, but in reality they are slightly shorter than those 215/70-14s. How much wheel spin did u have when you ran your best time? What sort of RPM's does your engine turn? I need to get a tach, I have no idea what mine turns now. brad
shorter tires will make you go faster... but run higher rpms.. my car weighs 2850 with me in it i am shifting at 5200 rpms into 2nd and into 3rd... when i shift into 3rd, i am about 250 feet from the stripe. so i dont think i am much above 4000 when i cross.. might even be lower than that your setup: 306 Small block. 1968 heads, stock. Decked just enough to true them, springs shimmed and 3 angle valve job. CC 268H camshaft. Pro products Cross Wind Intake (2 plane-air gap style) 600 holley vacuum secondaries 2.79:1 open differntial 235/45r17s on 17 x 9 wheels. My setup: i am running a 302 bored .040 i think that is a 306.. not sure. 1975 stock heads with 4 angle valve job and 120# springs at the seat XE256h cam.... .477 intake .484 exhaust performer 302 intake with a 2: spacer on it and a ram air hood with block off plate custom made ( this intake is killing my RPMS) edelbrock 600 carb, manual choke Hooker headers MSD igntion system, 6a box, blaster ss coil, 8.8 wires 2.79 gears 215 70 14 tires front and back i have a 4.11 with mini spool ready to go in tomorrow, hopefully.i have 15x8 rims for the back.. just need 255 60 15 tires the reason i say you have slightly more than me... you have a better intake, heads, cam.. which makes the power. your tires are way bigger than mine.. so yes, that will kill it a little.. if you got some smaller diameter tires.. you would have a nice car at the track
Here are the tire diameters I found on the internet. [FONT=Arial, Helvetica, sans-serif]215/70 x14[/FONT] [FONT=Arial, Helvetica, sans-serif]25.85" [/FONT][FONT=Arial, Helvetica, sans-serif]235/45 x 17[/FONT] [FONT=Arial, Helvetica, sans-serif]25.33" According to this tire height chart mine are actually a little shorter. http://www.sstire.com/tireheights.html Plus I don't think my heads are anything special at all. The '68 heads have very small ports and probably don't flow a bit better than yours. I think even some stock E7 heads would help. brad [/FONT]
wow.. i would have thought the 17" would be alot taller.. but that aspect ratio is small, so i can see it now.. your heads are 68 heads... small chamber.. no restrictions.. mine are right in the heart of the emissions era... thermactic humps.. i ground them down, but they still need work to flow what yours would.. and your tires are wider than mine.. so you should have more traction..
Well, I know on the street from a dead stop if I load the converter a little and just mat it, it will spin all the way through first gear. Remember mine is an open differential, no posi, no spool, no shims. Plus with the 2.79 gear you have to wait on it. There is a noticeable rush when the engine comes up on the cam so to speak. I want to see what it will do as is then go back with stickier rubber and more gear, maybe a posi or locker of some sorts.
That is pretty similar to a set up that I ran for a while. Best I could get out of it was 9.73 @76mph. Cleaver
I have never ran on a 1/8 mile track. so I have never set a car up for one. I just threw together a little bracket car from spare parts that I had laying around. Tell me what you think. 1974 4 door comet, 60 over 289. all balanced. D00E heads 194/160 valves Mild port job, crane springs and roller rockers, Victor jr Intake. Holley 650 Double Pumper. Pete jackson gear drive, Hei Distributor and Crane Hi6 Ignition. 3500 stall converter,Manual Valvebody c4. 8 inch rear with 456 ring and Pinion,Shop built Frame connectors and traction bars. 5 gallon aluminum fuel cell and battery in the trunk, Hooker super comp 1965 Mustang Headers Centerline ( They fit like a glove)auto drags front 15x3.5 and rear 15x9 with Hoosier 28x10.5x15 slicks. this is a 46000 car the interior is mint and everything works down to the never used cigarette lighter. I Did put harnesses on the drivers front. Everything but the gas gauge works and it did until i pulled the stock tank. I have a few odds and ends to finish , But it should make the track next weekend. so what do you think its gonna run? I have a pretty good Idea , but I want to hear your ideas first . I will try to get a few picture on later when my wife gets home to download them for me...Chris
I don't think so, Chris. That sounds really heavy. :confused: 46,000 Lbs is a lot to move down the track even for a 289. I'll guess a month? (considering how many times you'll have to rebuild/repair/replace the drive train). (I believe that even if you meant 4,600, you're probably closer to 3,600)
11 seconds. That is optimistic as I can get. It won't matter if you have tire spin or not IMO. Either way the time will be the same. If the tire spins, you will keep the rpms up in the cam, but will not gain because of the spin. If you keep it from spinning, you will lose due to the rpms not being in the cam's power band. Either way you come up with the same et/mph. When you put gears in it, your mph won't change much, but the et will come up a great deal.
By the way Rick, he said 46,000 lbs, which should put him at about a 95 second 1/4 mile, maybe a little less And, I bet his weight is closer to 2600 lbs than 3600 lbs. I guess it depends on how heavy his seats are...
i think he means $46,000 car but in either case.. i bet it runs 11.85 to 12.25 range especially with the 4.56 gears, 3500 stall and slicks
Ain't sure on the weight,,,I'm hoping he don't weigh much more than 200-250!!!!! unless he's 10 foot tall
i ment 46,000 original miles one owner old lady car. The car weighs 3450 lbs.. It should run 12.50s as it sits . not shabby for a 4 door street legal Comet
