The 557 is alive!

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Post  soupbean on March 4th 2012, 8:45 pm

Finally the 557 is sounding good and ready to rock in the ol stang. Putting her on the chassis dyno tomorrow to do some final tuning. I'll update tomorrow with what she puts down to the tires.
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Post  bruno on March 5th 2012, 11:53 am

cool------ were are the picks and the details of the build Question

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Post  Copperhead on March 5th 2012, 3:49 pm

Great to hear Shannon!!

Can't wait to hear the #'s

bruno wrote:the details of the build Question

Nick,....
It's my previous engine. The one that Seth Hembree built http://www.460ford.com/forum/showthread.php?t=131922

and I bought from him. I had Jet-Boat bob go through it a little while back.

Seth #'s were 838hp @6300 / 776tq @4800. I'm pretty sure when Bob went through it, he was able to squeeze a little more out of it, as it ran much better after the clean-up.

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Post  56Tbird on March 5th 2012, 7:26 pm

Copperhead wrote:Great to hear Shannon!!

Can't wait to hear the #'s

bruno wrote:the details of the build Question

Nick,....
It's my previous engine. The one that Seth Hembree built http://www.460ford.com/forum/showthread.php?t=131922

and I bought from him. I had Jet-Boat bob go through it a little while back.

Seth #'s were 838hp @6300 / 776tq @4800. I'm pretty sure when Bob went through it, he was able to squeeze a little more out of it, as it ran much better after the clean-up.

Hey Copperhead..I saw a A460 block saturday with your name all over it Cool Very Happy
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Post  soupbean on March 5th 2012, 9:52 pm

Well, not the day I was looking for. Not because of the numbers because I understand most all dynos will tell you something different but for the fact that we went there to tune. To get a base line and make adjustments to see what it likes. First pull straight off the trailer, 619hp bad lean as we thought it might be. Around 15 a/f with 102 jets. Second pull, bumped jets up to 108/109 621hp with around 17 a/f scratch . Dyno owner says we went the wrong way affraid 102 to 108/109 is the wrong way huh? Bumped the fuel pressure up on the bypass for shits and giggles, start to make the third pull, dyno owner shuts the car down and goes to clean his o/2 that was supposedly cleaned previously that morning. Came back, made the pull and a/f around 12.5 getting up to around 13.5 at the end of the pull. And still at 621hp. Suspect . A/f all around the board, a big jet change, and 2hp difference between 3 pulls? Loaded it back on the trailer. Going to another dyno. Waste of time and money unless the last pull a/f numbers were accurate then we should be good if we pull just a touch of high speed out. Never got to play with the timing. Oh well. Dyno owner seemed quite pissy throughout the session, had to wait a few times during my initial "hour" so he could apparently tend to other business, and we were not allowed to even be in the room with the car to monitor fuel pressure or WOT. Hell I didn't even get to take my video tongue . Maybe just the way some chassis dyno places are, just not from what I have heard from other places.
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Post  richter69 on March 5th 2012, 10:06 pm

what carb?
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Post  soupbean on March 5th 2012, 10:16 pm

1250 prosystems
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Post  BOSS 429 on March 5th 2012, 11:06 pm

what intake?
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Post  soupbean on March 5th 2012, 11:28 pm

old style motorsport
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Post  soupbean on March 7th 2012, 8:50 pm

Took it to another chassis dyno yesterday. Much better dyno! The numbers will hurt your feelings if that is what you are there for but as a tuning tool to make adjustments and see the changes as we wanted it was nice. It also had a 1/8 or 1/4 mile simulation that was pretty cool (but felt wild as hell!!!). Last dyno showed on the last pull afr was looking decent after erractic numbers through the 3 pulls. Off the trailer on this dyno, carb was still nasty lean. After 3 hours of trying to get it dialed in, the conclusion is it is over carburated. Cant get the 1250 to pull fuel. Huge jet increase, tightened high speeds and intermediates up ridiculously and even plugged of 4 of the 8 emulsion holes in the metering blocks and still lean on the top end of the pull. Maybe with more compression and turning the thing to the moon it would be ok. Ordered the -1 QF 1050 today. I think it will like that alot more with the power range we are dealing with. Back to the dyno next week. Will update.
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Post  dfree383 on March 8th 2012, 12:19 am

did you talk with Patrick? a 1250 should work fine on a 557" A460 headed motor.

is you fuel system up to snuff?
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Post  soupbean on March 8th 2012, 1:32 am

-12 to BG400. -8 return from bypass. -10 from pump to BG 4 port. -6 from 4 port to each bowl. I know there are alot of BG haters out there and rightfully so but I worked there for a few years and know some of the guys that really know their shit on the fuel systems. I too have saw alot of people on forums like this running the 1250's and have dyno sheets with this engine making good power with good afr with a qf 1250 but with this compression, camshaft, and powerband, this prosystems 1250 has to be over kill for my combo. When I bought the engine it had a bit of flash in the exhaust ports. In this situation it just don't seem to want to pull fuel. Smallish cam, street compression, peaking hp in the lower 6k range, you tell me. I tried calling Prosystems earlier and didn't reach anyone. I did recieve a call back but by that time I had already talked to enough people to make a decision and purchased a new carb. I am by no means bashing Prosystems stuff, I just think their 1250 is more than my engine wants. I know you guys know this BBF stuff very well and if you think I am going the wrong direction I would be very appreciative of your opinions. Thanks

557ci
.716 lift 264 272 @.050 110
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Post  dfree383 on March 8th 2012, 3:11 am

IMO I would have sent the 1250 back to pro systems and had it checked out 1st before buying another carb.

Buying a new carb may not solve it.

Any Vac Leaks? Ignition working properly? What Fuel? Did you disassemble the 1250 and clean everything?

Also just because you have a big fuel system doesn't mean its function properly, have you tested it? Cleaned everything out?
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Post  soupbean on March 14th 2012, 9:19 pm

Put the QF "big" 1050 on it and dynoed again today. Made 20 more hp than last week and the afr was pretty close out of the box. Put a little bit of jet in it and stays pretty steady around 12.25 afr.
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Post  69F100 on March 14th 2012, 9:34 pm

what was your final hp at the tires
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Post  soupbean on March 14th 2012, 9:55 pm

It made 620 on the dynojet. No changes and straight to a Mustang dyno it did 545. With the QF today on the Mustang dyno it did 565. So as you can see there is a big difference between dynos. The reason we went were for tuning purposes. This weekend is the true test Wink
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Post  Oakley Motorsports on March 14th 2012, 10:33 pm

soupbean wrote:It made 620 on the dynojet. No changes and straight to a Mustang dyno it did 545. With the QF today on the Mustang dyno it did 565. So as you can see there is a big difference between dynos. The reason we went were for tuning purposes. This weekend is the true test Wink

In my opinion you could run the qfx 1250. The reason being the main body and possibly the metering block. The stock qfx comes with a stepped booster and we run a straight booster in the racer engines. The qfx main body has allowed bigger carbs to be run on smaller less hp engines. There is also a longer venturi length on the new qfx. Longer measurement from booster to throttle plate and will help with signal. If you go back to the dyno sometime let me know and I may be able to send you one to try.

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Post  soupbean on March 14th 2012, 11:51 pm

Oakley Motorsports wrote:
soupbean wrote:It made 620 on the dynojet. No changes and straight to a Mustang dyno it did 545. With the QF today on the Mustang dyno it did 565. So as you can see there is a big difference between dynos. The reason we went were for tuning purposes. This weekend is the true test Wink

In my opinion you could run the qfx 1250. The reason being the main body and possibly the metering block. The stock qfx comes with a stepped booster and we run a straight booster in the racer engines. The qfx main body has allowed bigger carbs to be run on smaller less hp engines. There is also a longer venturi length on the new qfx. Longer measurement from booster to throttle plate and will help with signal. If you go back to the dyno sometime let me know and I may be able to send you one to try.

Thanks Phillip, I really appreciate it! And would like to take you up on that offer if you are serious Very Happy . When you guys were playing with this engine on the engine dyno, It made more power with a QF 1250 over a Holley 1150. The reason I went with a 1050 was all the local carb guys were convinced that was what it wanted. Even QF recommended the -1 1050 with the 1.750 venturi so thats what I went with. I had a nice consistent afr pretty much out of the box and better numbers throughout the entire curve versus the prosystems 1250. No matter what we did, and we made some drastic changes (went from 102 jets to 110, hardly any change, drilled the 110 jets with a #22 still bad lean, went from a seemingly already small .028 hs to a .018 and .060 intermediate to a .028 and got better but still lean, plugged off the bottom 2 rows of emulsion holes and got the best afr but was still 13.5 at the beginning of the pull getting up to 14.5 at the end of the pull), we couldn't get the prosystems to pull fuel. If we had some bell boosters we would have tried that. It is much better with the qf 1050-1 but I would be interested in how the QF 1250 would do.
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Post  Oakley Motorsports on March 15th 2012, 11:28 am

call me first of the week and we will get u something together.

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Post  soupbean on March 24th 2012, 1:23 am

The weather finally cooperated with us and got her on the track tonight and I am very happy! I had to get my runs in for my competition license and the best pass was on one of the moderate runs that I had to let off before the 1/8 and the car went 6.05 @103 (again, had to let out) with a 60 foot of 1.32. Had some other issues on the full pass runs so had to calm the car down to get the runs in so we can race tomorrow but def have a 5 second 1/8 mile car now Twisted Evil . Let the fun begin!!! For no more than this engine is, I have to say I am very impressed! Thanks Keith Cool
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Post  richter69 on March 24th 2012, 1:26 am

yep you be in the 5's solid................... Wink

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Post  bruno on March 24th 2012, 5:01 am

very nice shake down passes , congrats and change your signature Wink

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Post  bigjohn2007 on March 24th 2012, 4:08 pm

Sweet......... cheers
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Post  soupbean on March 25th 2012, 3:43 am

Well, today was my first bracket race since I was 19 years old (14 years ago). Last night we found that leaving @ 3400 although hurting the 60 ft put us at 6.06 1/8 to be right where we wanted to be in our 6.00 bracket class. Today on our first time trial, she didn't hook. We changed lanes on our second time trial, 6.02. Dialed in a 6.04 for the 1st round and ran a 6.04! Got the W. All the work, money, and pains in the ass over the winter meant nothing after this feeling! I wish I could go on with a good story but our shitty weather for the year struck again and rained us out AGAIN! BUT, I am very happy with rolling off the trailer with so many changes and it is working very well. Can't wait till next weekend! What can I do to feed this need for this feeling for 6 more days? Twisted Evil
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Post  soupbean on March 25th 2012, 3:51 am

bruno wrote:very nice shake down passes , congrats and change your signature Wink

Thanks Nick! I have this strange desire to withold my sig update until I have a proven 5 sec pass that will hopefully come next Friday's test and tune. Being in a 6.00 limited class, I have to launch lazy to keep the car within the bracket on race day but I plan to let er eat Friday Twisted Evil
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