I am still alive! Just been away a while..

[351wStang]

Been away for a while, computer crashed, changed jobs, ect ect. But lastweekend I finally found time to work on the car some more. Was having a real bad overheating problem. I gt that somewhat fixed with radiator modifications. Fixed enough to do some tuning anyway. The car had been so rich at idle and cruise that it would nearly gas foul the plugs in no time, after just a couple minutes of run time I could pull the plugs and they would be as black as they could get. I talked to Kevin at CSU twice (left messages and he called back pronto). Now when the car is at operating temp it idles at about 13.8afr, cruise is about 13.3afr, and I havent seen the LM1 at WOT but it pulls hard, the front of the car comes up so much under accel that I can barely see the road so I have to let out. There is a very slight surge while cruising and if I get on it a little then go back to part throttle fuel pops in the exhaust a little. Just needs some more tuning, but its going great. It torques up so hard and fast the first time I got on it in 2nd it broke my exhaust hangers. Hopefully I can be around a little more now. Useing my Bro's comp. Maybe I can have another update this weekend. Time for work now. Just wanted to let yall know I didntn fall off the face of the earth and the car is doing great.

[TheStang00]

awesome, sounds pretty darn fast.

[HiFlow5 0]

Originally Posted by 351wStang

Been away for a while, computer crashed, changed jobs, ect ect. But lastweekend I finally found time to work on the car some more. Was having a real bad overheating problem. I gt that somewhat fixed with radiator modifications. Fixed enough to do some tuning anyway. The car had been so rich at idle and cruise that it would nearly gas foul the plugs in no time, after just a couple minutes of run time I could pull the plugs and they would be as black as they could get. I talked to Kevin at CSU twice (left messages and he called back pronto). Now when the car is at operating temp it idles at about 13.8afr, cruise is about 13.3afr, and I havent seen the LM1 at WOT but it pulls hard, the front of the car comes up so much under accel that I can barely see the road so I have to let out. There is a very slight surge while cruising and if I get on it a little then go back to part throttle fuel pops in the exhaust a little. Just needs some more tuning, but its going great. It torques up so hard and fast the first time I got on it in 2nd it broke my exhaust hangers. Hopefully I can be around a little more now. Useing my Bro's comp. Maybe I can have another update this weekend. Time for work now. Just wanted to let yall know I didntn fall off the face of the earth and the car is doing great.

Cool, how about some video of the car?

[SkylineUSA]

Yep, vids

Would love to hear it, run hard of course

[351wStang]

If it doesnt rain I'm going to the dyno a half hour away tomarrow. Right now the blower belt is slipping so I'm running so rich up top that it wont rev past 5000 rpms under load. But this damn thing scoots for only 6-7 psi I'm tellin ya! I'll let ya know if I can make to to the dyno, working on getting some video footage soon.

[neatofrito1618]

Cool, keep us updated with the numbers.

[351wStang]

Just got back from the dyno. Heres the scoop.. I'm making 14lbs of boost but then it leaks down some. Its lifting the heads under boost and getting the cumbustion pressures into the waterjackets, therefore pushing water out the overflow of the radiator. Also it started to run lean up top, I talked to Kevin at CSU and we went from a 82 jet in the rear to a 88 jet in the rear. Just never got to make a full pull because it was trying to run hot pressureing the cooling system with boost. So, at 5700 rpms, boost leaking down to 11lbs, and the car running lean it put down 517rwhp and 485 rwtq. I talked to the guys at the dyno, Kevin at CSU and Joey Robinson from Robnson racing who did my machine work and assembled my short block, we all agree that it should be making closer to 600rwhp and much more torque once I fix the issues I have. Joey and I decided to go with Cometic gaskets and ARP studs to try to fix the problem. It will be a week or two before I get back to the dyno but I will let yall know how it goes then. I started this build looking for a 10 second pump gas street car. I think I've got that already, I may touch the high 9's once everything is sorted out. The car is loud but other than that it drives just like it was stock, its just got a little more ass now if I feel the need for it. So, overall a good day I think. I'll see about getting some video of the car later.

[TheStang00]

hmm... wow. thats really awesome. 600rwhp is certainly nothing to scoff at. you and mr luos need to race.

[SkylineUSA]

Your not using studs? Shame on you

How lean, is lean? Do you have an RMP graph.

As soon as you sort it out, you'll get very close to 600, if not more. Remeber Rome was not built in one day

[351wStang]

AFR's hit in the mid 13's actually. But I didnt see anything wrong with the spark plugs, well atleast not yet. Been working 2nd shift and bow hunting in the morning so when I'm home I'm asleep. Just got home from work now actually and I'll be leaving in about 3 hrs to hunt. I'll take a day off from hunting later in the week and check all the plugs then. I really dont think I broke anything, the car runs and drives way to damn good to have any bad problems. After I saw afrs in the 13's I called Kevin and we went up 6 jet sizes in the back. It was 67/82, now its 67/88. I'll talk to Kevin again before I go back to the dyno but I make put 70s in the front to be safe.

I bought studs for it originally but my machinist misunderstood me and torque plate honed the bores with bolts, but I talked to him when I got back from the dyno and we are gonna put studs in it and see how it does. Theres a decent amount of meat between the bolt holes and the bores on sbf's so he says it shouldnt pull anything too far out of whack.

No RPM graph, but my hp graph is kinda funny. At the start of the pull my hp line basically makes a quick loop, converter flash maybe? The gasket between the carb & bonnet was pushed out and leaking boost there as well, I figured that may have een giving the carb a weird signal and might contribute to the lean condition as well.

Soon I'll have either cometic hg's or felpro mls hg's & studs on the motor with a new gasket between the carb & bonnet. I may drill/tap the 1/4-20 carb stud out to 5/16-18 or something before going back to the dyno as well. I think the 1/4-20 all-thread I'm useing for a carb stud may be stretching under boost and causeing the gasket to be pushed out and leaking boost there as well. I know at about 6k rpms the car was only running 116mph on the dyno so I may have to go to a 28" tire to get down the 1320. Running 275/50/15 MT ET Street radials now. I just hope I dont have to pull the motor and tear it down to have a receiver groove cut in the block for lockwire gaskets to solve this problem in the long run.
I might switch to a Dart block this winter though. Dart 357w, 4340 goods inside, JE slugs, TW heads, Vic JR intake, TFS 2 or custom hydro roller, sounds expensive but I might do it. Just dont influence me Tony, I cant afford it lol.

[SkylineUSA]

Naw, you should be ok with your set-up. If not I am screwed

116mph, and that was in 1:1 gear? What gears are you running again? And trans?

[351wStang]

275/50/15 MT DR's, 3.55's, C4.

[SkylineUSA]

What conveter?

[351wStang]

Edge 3200 stall turbo converter. Used but like new still. Makes too much power to be blowing thrue the converter doesnt it? Think the converter is slipping that bad? I would have thought It would make alot less power if that where the case.

[SkylineUSA]

Maybe, but it does sound like its slipping a bit. With a 116, have you ran your combo on a calculator to see what your trap speed should be?