Thread: first time at the track

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this spring I'll be going to Epping NH for the first time to race and was wondering if any of the more experienced guys out here might have an idea o0f what my truck should run

its a 454 stock bore and stroke
3904390 heads decked and 2.19 1.88 ss valves done 94.7cc chamber
jones solid roller 708 int 710 ex 268 272 @ .050
performer rpm slightly opened
holley 750 double pump
full tube headers 1 3/4 pri 3" collectors
its a 53 chevy pick up 2700 lbs
f@#d 9" rear 4.56 gears 31x18.5x15 mickeys
four bar set up on the rear
th400 reverse valvebody 5000 stall
I know its not a lot of info I'm not looking for exact ets
just an idea according to my dyno program the motor puts out around 560 hp @ 6500 545 tq @ 4000
thanks for any help
Jim

Im gonna guess around 11 seconds @ 120mph or so. Need the RWHP for a more accurate estimate though.

Good Luck!

was told by afriend that it should be around 460 rwhp

Originally Posted by 53 chevy pickup

was told by afriend that it should be around 460 rwhp

Sounds about right, I was gonna guess 450.


Being conservative with the numbers, you should run high 10's.

sweet kinda scary too first time Ive ever had this much power most I had before was 375 from a 327 in a 69 firebird that just liked to smoke the tires plus I was young and in high school so smoking tires was the way to show your power lol btw your coupe looks great love the big meats and the raked stance

Takes a lot to get a pickup in the 11's, got to battle a lot of frontal air. My guess would be in the 13's... Dyno program seems a bit high on horsepower, too.

you can always add some "noz" Maybe someone can input the numbers on their desktop dyno.You also have a lot of tire to spin also.

I prefer all throttle no bottle my buddy Jeff had basicly the same set up as me but his engine was stroked to 505 and he ran 9.579 he had 5.12 gears and an 1150 Bolaws carb in a 3700 lb 67 nova I want mine for dual purpose street and strip plus nos scares me I'm too much of idiot when it comes to doing stupid things with power

my brother just ran the numbers in his comp cams dyno program for me and came up with almost the same numbers oh and the cr is 9.87:1

You may be in the low 12 second area. Like Dave mentioned, it takes alot to get that big frontal area thru the air. Make sure to let me know when the time comes, I'll be there to check it out.

That setup with a 5000 stall converter is not going to be streetable..... A 5000 stall converter is going to build so much heat the life expectancey of the transmission can be measured in hours..... Got to remember, that computer software shows calculations on all things being perfect.... Very few engines let alone cars with all the variables in suspension, track conditions, driver error, etc will realize the numbers put up by the computer program..... At our summer car show here, we always book in the chassis dyno to run cars on. I've seen a lot of alleged big horse cars register wheel horsepower in the 300 to 350 range... Not a lot of street cars without blowers or NOS have put up numbers in the 500 range.... Real Dyno's don't lie, desktop dyno's IMO assume too much about the vehicle/engine performance....

Yep, frontal area is going to hurt a lot. My Jeep truck with the 5.0 Mustang engine hits a wall at about 100. Pulls good to that point, but at about 90 I feel it start to drag down, and really feel it at 100. Like pushing a sheet of plywood against a hurricane.

I'm betting on mid to high 12's for your truck.


Don

I think you'll make mid 11's assuming you can put the power to the ground which it sounds you ought to with a good 4 link and 31" tire. You're not pushing much weight. Although, your 750dp might be a little small for the top end and the 5000 stall is wasting the bottom end and shrinking your power band... I still think you can make 11's.

Do you have all the appropriate safety gear to run 10.99?

Let us know how it turns out....

Good luck,

Chris

yeh my friend rick is setting up the suspension with me and putting a 10 point cage in and I have brand new rci harnesses .I was told by jones cams that I needed the 5000 stall what would you suggest I'm also looking at using a friends 950 Demon for the track

My slightly informed judgement on the stall was based on your DD peak tq spec at 4000. I've heard that you want your stall to go where your pk tq is...

I would have to defer to the cam grinder as they should know best.

Where do you shift? 7000?

Seems from your specs this is intended as strictly race vehicle? What compression you running (I'm guessing pretty high 11-12+)? Pardon my ignorance but are the 390 heads rect or big oval?

I'll stick with my mid-11's prediction maybe into the 10's with a good tune. Should be a fun trip!

You might get more top end out of it with a bigger primary on the exhaust(?)

shifting at 6800 I believe compression is about 10:1 and the heads are oval pocket ported and gasket matched to the intake