73C34me

I am following this thread w/ great interest: having made a few passes in my 383 vette. 2 things come to mind. Dropping in a motor makes for a fast street car, but an optimized car & driver make for quick and fast 1/4 mile performance. There is a similar "discussion currently in the C2 forum. Any way it is great when owners actually take their Cars to the strip and drive them!
PS. I am shooting for 10:90s for my 73. 2950lb car 4:10 gear, Muncie wide ratio- 500ish hp.

htown81vette

That's the tricky part! when is enough, enough? Because the more suspension mods and other drag racing "tricks" you perform on your car, the less fun it is to drive on the street (in my opinion).

I went too far with my 98 Firebird, I originally intended for it to be just a street car that I occasionally take to the track. I did this and did that, spent a lot of money on suspension mods, now it rides too harsh to enjoy on the street, although technically it's still street legal.

That's why I enjoy my 82 Vette, I can drive it and just enjoy it....

That's a very realistic goal with that car, it may take some "seat time" to get there, especially driving a stick, but it's definitely do-able.

htown81vette

Drivers mod = short for drivers modification.....for example when your at the track and someone with an 800 hp C6 Vette takes off spins, grinds some gears spins some more, grinds more gears and run a 13. You might hear someone turn to their buddy and say damn....that car needs a drivers mod REAL BAD. lol. In other words but a different more experienced driver in there and the car will probably run a lot quicker ET. Hey we've all been there...gotta start somewhere....I remember when my friends would harass me about needing the driver mod.

pauldana

I agree... No way... 10 anything will never happen... Loose 600 lbs, then maybe... Maybe, if everything else is perfect ...would not bet money on it though:-/

I'm 510 at the rear wheels and 3100 lbs and I'm not sure I could do it...

bluedawg

Don't you and Tony have the same engine? If so you should put more power to the ground, but his should be more consistant with the auto transmission. The online formulas Say that with 122 mph put out by his vette should be capable of 10.82(1320'/122mph
=10.82) and wallaceracing.com calculators say that his car is capable of hitting 10.50 @ 128 mph with his 584 hp, but with out a 10.xx time slip it's still a 11.35 second vete,(faster than mine) I think that with a 4 link and sticky wides his vette is capable of 10.xx. What does your vette turn, You guys have the same engine then the comparison would be really neat considering you have a 6 speed manual with 3.55's and him a 4 speed auto with 3.90's plus 325lbs difference in weight, which should make the lighter car 3 tenths quicker(there again if what I've read is correct). The comparison between your vette and his would either back up or dispel the information that I've read while researching on the ole interweb. You should take it down to see what she turns, I'd bet with your competitive personality you'd become addicted to the 1320...I can't wait until summer time and hopefully I can get to the strip this summer, I worked 1760 hours between first of May and the end of August and hope to be back on my 2 and 2 rotation.

pauldana

Yes, are engines are close... I may have a few more hp (I figure about 15-25) due to some slight differences, and I may be a little lighter at this stage.... so yes, 10sec is possible...

But 10 sec is never going to happen from a 3,600lb car with a 475 hp crank... that is a 12 sec car on a good day...

ajrothm

LOL@ the responses in this thread...


Definitely look at www.vortecproperformance.com if you are even remotely thinking about going to a big block. It's pretty pricey to make the swap, but worth it. I did it.

Remember about the additional costs...(exhaust, accessory brackets/pulleys, hood etc.. Costs a lot to do it right.


If the car is full weight, (3600 raceweight), it's gonna take a bit more then 450hp to go 10s. More like 550hp. (In a street car setup, not a gutted race car with an 8" converter and 4.xx gears, no exhaust, accessories etc etc).

450 hp will run solid 11s though in a decent setup... Fully maximized, I could see 11.50s-.60s@3600lbs.

Can't use stick cars for bench marking 1/4 mile performance unless they are REALLY setup for drag racing. On average, a stick car will run .3-.5 slower then an auto with the same engine/weight.. Assuming both have correct gearing etc.

My Z06 ran .7-.8 tenths quicker after the auto swap....and that's on a 9 sec car to start with.

diehrd

I agree .. With out a power adder hitting ten seconds requires a lot of N/A hp and 450 or so aint even close. You would be having a great day to get out of the 12's .. Maybe 11.9 .. 10 no way ..

What was the OP asking about at the beginning of this topic ?? Bahahahaha Sorry OP ..

73C34me

i think a good driver could do it. It may take me a few years but that is ok. Just for fun!



That's a very realistic goal with that car, it may take some "seat time" to get there, especially driving a stick, but it's definitely do-able.[/QUOTE]

bluedawg

I agree with 450 horse unless it were in a 2,000 lbs rail, My comments on 10's were for the power and weight that Tonys vette has. what were the differences between ya'lls engines? I am thinking about building a 427 sbc for the wifes truck, I remember your thread about help me build my 427 sbc. So you havn't been down the strip in it yet?


I thought that You built the same exact engine as Paul, Must be getting old and suffer crs, none the less 11.35 at 122, shouldnt take much more than sticky tire to hit 10.xx looking forward to your track times and mph this spring.

What happened with the MPH?

pauldana

I have higher compression, .5, my ARF 220's are competition ported and flow more, I have a windage screen... ... and not sure, but I think my exhaust may be bigger... not sure, I run 1 7/8 cooks and a duel 3" with X-pipe and Borlas..

ajrothm

It gained 2 mph in similar air. However I added about 200lbs when the auto went in it (I added a roll cage).. So with more weight, less power shown at the tires (loss through the converter), the car still went faster with the auto.

Now on hwy rolls, say from 100 mph up to 150 mph, the car was faster with the stick by about .4-.5 sec. I mean you are putting more power to the tires with the stick, it's zero loss through a stick trans... You just lose too much speed from shifts and they are hard to launch well.

theandies

I have a ZZ4 with a Muncie 4 speed (M20) with 3.55 rear gears. I've never tracked it but when my buddy with a 2000 Camaro SS would "play" we were equal in acceleration and his car would do 13.5 in the 1.4 so that is what I'd expect my car would do give or take a few tenths.

AdPock

Came in to check out the thread, came out with our Corvette of the Week winner. Congrats, and good luck with the swap!

https://www.corvetteforum.com/articl...etting-hotter/

diehrd

I also changed my oil pan and windage , I also have 3" dual x pipe exhaust and 1 7/8 headers XS Power..

But I have a vacuum pump which you don't lol .. That adds 20 to 30 up top .. So we are really close . .

diehrd

Auto is always faster in a drag race .. All the talk about hp loss of an automatic never pans out when the guy with the stick is always seeing tail lights at the finish Bahahahahaha

pauldana

Vacuum pump... Been looking into that ... Want one also... Pic.. Price.. Specs !!! Plz:-)

bluedawg

Thanks for the elaboration Allen.

bluedawg

Can you post a photo of your vac pump system?

bluedawg

You got any plans on seeing what it turns in the quater?