Found someone who wants my money lol. 22nd it goes on.

 

 

Alright, two questions.

1. Any power guesses for a stock base. Remember, heads, cam, exhaust car. Any extra info youd like for power guesses just ask.

2. I have oxygenated race fuel. (I put it in the 55 for winter storage so I don't have to deal with ethanol in the teapot all winter... I don't want to rebuild that again) should I run it or not bother for the dyno. All I'm thinking is the oxygen will add a little extra and skew the base line so idk. The dyno will most likely be the last time the car is driven for the winter so it'll also sit without ethanol too. Granted this would be the first time I've ever done that to it because it really doesn't matter. Otherwise winterizing is simply rolling up the windows with the top on so dust doesn't get inside and maybe remembering to plug the battery tender in. (Can't open the hood in the garage to disconnect the battery while parked so I can use the tool box and compressor.)

 

1. 300 NET crank, so...270 RWHP?
2. Engine Masters just did a test on this shockingly (to me anyways), the oxygenated race gas DID make a meaningful amount more power. 15ish? on a ~500hp engine? I'd have to watch the episode again and can if you want more accurate info....


I just FINALLY fired the kart last night w/the MiniRam. My god that took forever to get buttoned up, but I'm going to try to squeeze that onto the rollers here if I can find a warm dry day.

 

I saw the engine masters episode too. It is actually the same fuel just 100 instead of 110 iirc. This is why I asked. I think I'll leave it out then to more accurately see what it makes.

I think your 270 is high though. The front half is great, the back end is slow. We'll see though.

Now, did the mini ram make it sound different?

 

I think it's definitely optimistic, too.




No at all, idling and revving. I'll have to get back to you on the driving sound.

I don't want to hijack you thread but though YOU of all people would find this interesting. When I started it, it was as if the ECM "didn't come to work today"....or something. It fired right away with thunder....same as always....then died nearly as fast. Did that 4 or 5 times, then I held the throttle open to help it stay going, which it did, but totally didn't want to. It ran like dog ****, smoked (blue) profusely and fumigated my garage in no time, to where i couldn't breath or see. If I let off the throttle at all, it would die, instantly. I eventually got out of the car and to the throttle w/o it stalling, and noted a few things:
1. IAC was closed.
2. Timing changes made no discernable difference...even radical rotations of the distributor (like 30* at the distributor!!)
3. Stroking the TPS didn't do squat -it usually surges the injectors. Nothing happened.

Fighting w/the throttle to keep it running, I got it warmed up and then let off the throttle, let it die. Shut the key off, checked over things, connections, any leaks? etc....found nothing. Decided to start it again to try to further diagnose it, and RooOOOOM!!.....LA-LA-La-La-la-la-la-la-la-la-la-la-la-la....into a perfect idle...IAC sucking air, TPS working, responsive to timing...

Weird as phuc. As my auto Prof would have said, "Huh. AM/FM....AutoMotive ******' Magic".

 

I've had that happen with my car. You recall a while back I thought my O2 sensor was shot and the car kept dumping fuel? Well for whatever reason that just happens every once and a while and ironically enough, un plugging and plugging back in the sensor connector fixes it. It isn't a connection issue, I've probed it while it's happening. It just decides to ignore that one sensor for the day.

 

LOL...old car quirks, I guess.

 

Dyno November 22?

 

That is correct.

 

Car goes on the dyno in an hour. Wish me luck.

 

Good luck! HAVE FUN!!

 

You were spot on. So was I though. At the shop he showed me both numbers, the mustang set and the dynojet corrected set. I asked how they correct and they said ours reads about 12% low compared to a dyno jet. The print out is the corrected numbers. They confirmed the difference is based on actual dyno data not some arbitrary number. Also, damn impressed at the consistency between pulls.

To save the math, the mustang numbers were 249hp 314tq

 

Right on. You got a ~300 crank NET hp engine there. Good for taking on any stock LT1.

I think that is quite respectable for a stock base. It would be interesting to measure the vacuum in one of the head ports at 3500 RPM.

 

The map was reading about 88 on one pull. So even the TBs are somewhat restricted as well. I think that 3400 rpm on up will show gains. The average power is impressive and like I said... it front halfs great. Back half is weak.

 

Damn....I'm surprised at the MAP reading! Jim did bored TB's on his ported intake and dual exh car and saw nothing for gains at the track. It seems a bit like the lid spacer, maybe? Interesting though. I bored my own TB's but did that w/a bunch of other changes at the same time, so...worthless.

 

Me as well. Jim was relatively stock correct? I only ask because I am running about 82% DC on 80 lb/hr injectors at 24 psi... So the plenum is being occupied by a ton of fuel as well and that would explain the reading. Normally in 2nd I see 96 in the log but it was loaded down way more on a dyno.

 

Yeah. Ported intake, dual exhaust was all he had. So yes, you're will "want" a good bit more air. I'd guess his car was ~260 NET CHP; it trapped ~96mph, IIRC in SLC...My LT1 traps100-101. SO, I'd guess you're ~40chp higher than Jim was but that vacuum would be limiting you there, some.

 

On a slow roll out both data software's show 1/4 mile passes trapping in the 98-99 region short shifting or riding out the gears. Which was how I originally confirmed it wasn't making much past 4400. ET dropped riding it out a little but mph stayed the same. less time needed to shift when you're ripping it all out vs concentrating on hitting 4600. data logs show slightly longer shifts (TPS drops on the shift, won't flat foot it.) I would say my butt dyno is spot on.

 

I’m just catching up here. Was that pull with heads, cam and ported intake or stock intake? You have a lot more cam in that engine (from memory) than I do. Mine consistently pulls 270rwhp on a Dyno Dynamics dyno which is similar to a Mustang IIRC. So 250rwhp is great with the stock intake (kind of unbelievable really) but a bit under done I would think on the ported intake. On the dyno mine is all in at 5000rpm and drops off pretty fast. The funny thing is on the road it feels like it is still pulling hard at 6000! What I love about these engines is there is some much bolt on horse power available.