Saturday morning, the Sport gets strapped down for a few dyno pulls. I have NO idea what the power will be. SO, I'll post the results when I get home. I've been waiting for quite a while. It's at the local tech school, and the instructor is a high school friend of mine. It's good to know people.
285 at the wheels is my guess.
Good luck!
That may be a good guess. I want at least 300, but, that may be reaching. Hoping the engine combo can do what it's supposed to do.
Let us know Saturday how it turns out!
I'll post the results and a ic of the sheet. In reality, probably 148 hp at the wheels.
150hp Vinnie. Don't cut yourself short ;)
The horsepower wasn't what I thought, but the torque was more than I thought. Scott (dyno operator) said the air/fuel mixture was right where it needs to be. Horsepower was 276 and torque was 349. It's good enough for me I guess. LOL.
Ah, I was 6 HP off. Oh well...
Not bad, got the graph??? If the dyno is calibrated correctly HP & TQ will be same at 5250 RPM, your TQ seems a tad high...
Also remember driveline loss is at least 15% to as much as 18-20%...
I had a stroker windsor in 1999 that made a little over 500hp on the engine dyno and a shade over 350 at the wheels once in the car. Still ran 11.30's in the 1/4 mile at 3300 lbs. I know guys that claimed over 400 at the wheels that still couldn't run the number. Dynos will vary drastically depending on design and correction factor.Should still be alot of fun.
291hp/349 torque at the wheels is pretty good. You're looking at around 350hp at the flywheel.
Nice numbers Vinnie :burnout:
I often wonder if the 70mm throttle body is big eough. He did say that the air/fuel was just about perfect. Nut I still wonder if a 75 would help at all.
https://www.facebook.com/avery.pigg/videos/1281297281886562/
Way cool Vinnie!!
Gotta figure out how to maximize what I have.
Nice job, saw video on the fb page
70mm throttle body should be ok. A 75mm might be better. I'm contemplating going from a 70mm to 75mm throttle body on my Thunderbird as well.
You're running a BBK style cold air intake correct? If so there's power to be had with a better setup. 3.5 or 4 inch tubing between the MAF and throttle body will make more power. Also a 9 inch long conical filter clamped to the end of the MAF will make more power than the cold air intake you have. Basically just copy the setup I'm running ;). I know you're running a Cobra computer and MAF but a larger than 70mm MAF will help a bit too.
All the above changes could get you ~ 10hp or so. Maybe a bit more.
If there is no vacuum being created at WOT, at larger throttle body is totally unnecessary...
Vinnie is the hole in the intake bigger than 70? I see you had TMoss work it, not sure what the result is with a GT40 intake. I think the 65 fits my TMoss-ported H.O. intake perfectly.
Vacuum is a measurement of restriction. Without vacuum there is no restriction.
The upper was untouched as the tubes don't allow for porting (tubular GT-40), and I'll check the opening. If it's not 75mm, I can make it 75mm easily.
True. However every time I've upped the size of some induction piece on my Thunderbird (MAF, throttle body, air filter, intake tubing) the car has gone faster in the 1/4 mile. It may not be necessary but for some reason it works.
Air is a compressible fluid. Pretty much all if it stays where the crazy white haired Asian guy on discovery channel goes. You can call it out everytime. As soon as it stops making sense, he pops up. Same with the guy on ancient aliens, not that there is ever much fact sharing there.
It's all theoretical physics. Part of the reason mustang guys can't figure out where the boost dropped on a s/c setup when they get better cylinder heads. The math says they had plenty before.
Then you had some restriction... No doubt sometimes it's so small that it's difficult to measure on a std vacuum gage... I never had more than a 65 on my 5.0, was happy with how it ran so never messed with it... I have a 70mm for the 331...
No doubt. With the 65mm throttle body on the car a vacuum gauge would show 0 inches at WOT. I switched to a 70mm throttle body and it still showed 0 inches at WOT. However the car went 1 mph faster with the 70mm than the 65mm throttle body. Go figure. If I can find a cheap enough, quality (Accufab or Edelbrock) 75mm throttle body I may try it to see if it helps.
I think up sizing components (to a point) helps the engine accelerate and reach peak power faster, thereby improving 1/4 mile times. Sometimes changes won't show much power on a dyno or other measurement tool but help none the less.
My 70 is fine, but I'd like to try a 75mm throttle boy. I have no funds for that for some time, but one day. My friend has a 75 on his 351W F-150. I'll borrow his and see if there's a difference.
, good numbers Vinny. Your car must fly.
Thanks, the car does just fine. I rarely even hot rod the old Bird. Most of my driving is 2 miles to work, two miles home. I'd still like to optimize what I have.