How much motor do i need?

I want to run at least 4.80 to 4.70s with my car. It is a 240in single shock swing arm dragster. My current motor is a 500in rb motor with out of the box 440-1's on alky and indy block, 13.2 compression. It has run a 5.601 in really good air and typically 5.72-5.75 in my 2660lb door car. Im thinking my dragster weighs around 1850 race cars as it is now with a bbc motor in it. It's a 525 with pro comp heads and a gm truck block its ran a 4.92.

What will the car run just by putting my current combo in it?

Can i get to where i want to go with taking my motor to a 572 or 588? I would raise the compression, have the heads ported and bigger valves put in the heads i have now. untill i can buy some bigger heads.

Thanks,
Chris

Talk to Al Alguire

If you put the car engine in the dragster you will
need about 200hp more.... if thats what I think your
trying to do(car engine in dragster)

FWIW our Racetech was running low 5.o's(7.90's) at about 1870 with a 557" CNC -1 combo here in Vegas. Was a pretty basic combo til it blew up Motor going in will be a 446 with -1 heads. Will let you know how that one runs.

Drop the compression and put an F2 on it....Done.

I have thought of the pro charged deal. Would probably go with a f1-x rather then the f2. The f1-x is a little more adjustable then the f2 from what i can see from buddies cars. I have a buddy with a f2 on a 565 and runs low 4.30's turned all the way down Then a buddy with a 540 with a f1-x that runs 4.4's on a easy tune and can turn it down more if needed. It also went a 4.27 with the same settings down in the carolina's in better air.

Its only money, i just need to make more of it to do so lol

B1 originals fully ported, biggish cam, 572 CI, 15-1 compression, and hold on. If it's built right it should make 1000+ and go 4.60's-4.70's at sea level all day long at 7500 RPM.

my 499 with 325cc -1 in my 1850lb undercover went 5.00 to 5.10

just put my 557 world aluminum block with the same heads on and a bigger cam is going 4.78-79 in fall air in ky. havent weighed it but it should weigh 1750 now. only have 35 passes on it so far, it may have a little more in it with some tune but i doubt much.

hope this helps

Quote:

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B1 originals fully ported, biggish cam, 572 CI, 15-1 compression, and hold on. If it's built right it should make 1000+ and go 4.60's-4.70's at sea level all day long at 7500 RPM.

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Oh, I'm pretty sure 572-13's would get the same result if you talk to Todd Marsh. He's done some stout builds with them.