Predict RWHP of my project for fun
- Thread starter angcobra
- Start date
Well here is the update.
The engine still seems to be tight and we don't have everything worked out.
A very heat soaked, and still a little rich engine only put down 370 RWHP, I hope there are more ponies to be had.
At the track, you could tell I have not run one since 1978. My reaction time was all over the place .250 to .500. On street tires and a 200 lb passenger, I ran 12.6 at 110 mph with tons of spinning. I think we should be able to get in the 11s.
I will post another update in about 2 or 3 weeks when hopefully we will have some more of the bugs worked out.
Also, for the fun of I ran my 03 Cobra Vert, with the stock F1 tires and a passenger, I ran 12.7 at 112 mph. I guess that wasn't too bad considering my 60' was 2.4 and I had to get out of it to stop spinning.
The engine still seems to be tight and we don't have everything worked out.
A very heat soaked, and still a little rich engine only put down 370 RWHP, I hope there are more ponies to be had.
At the track, you could tell I have not run one since 1978. My reaction time was all over the place .250 to .500. On street tires and a 200 lb passenger, I ran 12.6 at 110 mph with tons of spinning. I think we should be able to get in the 11s.
I will post another update in about 2 or 3 weeks when hopefully we will have some more of the bugs worked out.
Also, for the fun of I ran my 03 Cobra Vert, with the stock F1 tires and a passenger, I ran 12.7 at 112 mph. I guess that wasn't too bad considering my 60' was 2.4 and I had to get out of it to stop spinning.
I am very disappointed at this time. I feel it should be more like 450 RWHP. I think it must be one of 3 things, 1) not enough air, intake or small SC, 2) SC robbing too much power, it seems very hard to turn, 3) exhaust restrictive.
I am open to suggestions.
Air to Fuel Ratio was good on dyno, I had plenty of fuel with the 42#ers. The boost was reading 7# on the climb. The high boost could be a sign of restriction in the intake or exhaust. The belt squeals on the SC on almost every startup, the belt stretches and needs more adjustment after just a few minutes, this could be a sign of high friction in the SC.
My first try to get the HP I should have is to change the Typhoon intake. I have on the way a Edelbrok Victor 5.0 intake. It should be here next week. I decided to start with it because of the higher than expected boost measured in the upper intake which may indicate restriction in the lower intake. The Victor 5.0 intake is designed for 400 to 550 HP, which should be where I want to be.
I am open to suggestions.
Air to Fuel Ratio was good on dyno, I had plenty of fuel with the 42#ers. The boost was reading 7# on the climb. The high boost could be a sign of restriction in the intake or exhaust. The belt squeals on the SC on almost every startup, the belt stretches and needs more adjustment after just a few minutes, this could be a sign of high friction in the SC.
My first try to get the HP I should have is to change the Typhoon intake. I have on the way a Edelbrok Victor 5.0 intake. It should be here next week. I decided to start with it because of the higher than expected boost measured in the upper intake which may indicate restriction in the lower intake. The Victor 5.0 intake is designed for 400 to 550 HP, which should be where I want to be.
nice car man let us when your finished
I went all out with the machine work and forged internals. I got $6K in the machine work and internals.nasty said:
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Help is on the way. Vortech S-trim should be here this week. I just don't think the NOVI 1000 is moving enough air.
Update.
Vortech S-Trim with 3.33 pulley made 415 RWHP. Big difference in the torque and HP curve before it was all the way to 6200 RPM to make 376 RWHP now it makes 415 RWHP at 5300 RPM. I may run this for a while and then pulley up.
Vortech S-Trim with 3.33 pulley made 415 RWHP. Big difference in the torque and HP curve before it was all the way to 6200 RPM to make 376 RWHP now it makes 415 RWHP at 5300 RPM. I may run this for a while and then pulley up.
Are you seeing the same amount of boost? Did you install a new belt when you put the S-trim on?
wow nice.. still I kinda was hoping for more power... weird.
Track update.
1/8 mile on slick surface, lots of wheel spin.
7.92 @ 93.5 mph.
1/8 mile on slick surface, lots of wheel spin.
7.92 @ 93.5 mph.
fuelonempty said:
I built it with low compression (9.1/1) to allow for the boost. As it is showing, it needs the boost to make big numbers.
nice fox body.looks good.
angcobra said:
Something is definitely not running right on your setup. A 347 with an S-trim making 415RWHP...something is afoot - Watson!!
I have the following setup:
FMS 345hp Crate Motor (302), Vortech S-Trim w/6 pound pulley, 38lb injectors, Pro-M 80mm Meter, Cobra Intake, AFR 165cc Heads, 1.6 rockers, 2.5" exhaust system, BTM set at 1.5....I dyno'ed at 391/397. Both numbers were made prior to 6000rpm. All this with a backyard tune.
I later installed the Anderson Powerpipe (giving me 8 pounds of boost) and 1.72 rockers. So right now, I would guess I am past your numbers in both HP and TQ (even though you didnt mention TQ numbers).
Mustang Magic wants to up my pulley to the 9 pounder, which will actually bring me to 10 to 11 pounds of boost with the Anderson Pipe. They say with their "Chip and Tune", I should have 470 RWHP and close to 500 RWTQ.
To further compare your setup, my friend has a 331 Stroker, primarily the same setup I mentioned above as mine (same heads, exhaust, rockers, etc), however, he has the Vortech A-Trim (9lbs) and made close to 500 rwhp.
I would definitely check your timing and fuel pressure...something does not seem right with the numbers you are getting...especially from a 347.
BMN
Here is my motor shot..
Been a while since I posted, the problem was cam timing, the cam timing was allowing some of the fuel charge to be pushed into the headers and burned there. Same engine, different cam timing, now in 86 GT with C4 and NOVI 2000 SC is running 6.33 @ 109 in 1/8th.
im thinking 500+....keep us updated
tell me about it I had a shop reubild my 5.0 in my past 94 GT and it took like 3 1/2 but their car took like two days from start to tune. THAT's CRAPSQ Stang said:
update dyno today was 584 RWHP with the C4 auto.
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