Well, finally ran the new motor. Basically a stock rebuild with hotcam, 1.6's, 24#'ers, siamesed base, stock runners, stock TB, mild head job by me, few boltons, 6-spd, 3.42s, and RADIALS. This was also on a STOCK 305 tune. Not even a 350 tune. Here's the basic results:

60'- 2.14
1/8-8.9
mph-79.8

*these are basic. The rest are on the timeslips out in my car in the cold driveway. lol I think this is decent for just throwing it together without a tune or tires. I think it should run a 13.8-13.9 at about 100mph right now. We did some tuning tonight on it. Changed some timing and a few others, and I'm borrowing some Nittos from a buddy for the quarter mile race this weekend. I'll be posting my quarter time ASAP. I think it may go a 13.5 on tires and the first stage of tuning? Anyone else??


BTW- the car is definately being restricted by the heads/intake right now. LT1 intake is sitting here, and I'm trying to find heads. Next spring should be a little different. Later

 

I think you really need to workout the tune, as the Stock Lb9 Code is nowhere near what you need, and the 24# injectors are just confusing things further. The fueling especially is going to be very wrong.

If I read you right, Your basically running stock LTR L98 with a Lt4 HOT cam stuck in the middle ?

You should be able to weasel a low 13 Out of it, if you can get the tune on.

not exactly an idea combination, tho.

Ill be interested to see how you do with the Siamesed stock base, How far did you take it in ?

 

You definatly need to get that thing tuned. It should produce some nice results.

 

The ECM must be going nuts pulsing for 19# injectors and actually having 24#'s.

I hope you can get everything worked out.

 

Yeah, you guys would be surprised how good it actually runs though on just the factory chip. Considering everyone on here said it wouldn't even be driveable, I'm very happy so far. As for the tune, a buddy of mine has been helping me. We first tried changing the injector constant from 19 to 24. For some reason the car went nuts and didn't like it AT ALL. We still haven't figured that one out. I think these LT1 injectors are possibly dirty, sticking, or clogged. I'm gonna send them off soon I think. The car runs pretty decent other than being to rich and having really low BLMs. I'm ordering a chip burner soon, and already have a scanner for it. Just getting started with this project. Last night we changed the timing table some and it seems to like it more. still rich, but we're just working on it a lil at a time.

*As for the siamesed base, its ALREADY on the car. Seems ok, but I don't really have any reference without it on this motor.

*Yes, I am basically running a stock LTR L98 with the hotcam and 1.6s. I have some other bolt ons but NOT to the TPI. The base is siamesed, thats about it. I know its NOT an ideal combo, but money isn't all hear right now for heads/intake. I'm doing it one step at a time. I also wanted to see what was possible with basically stock heads/TPI. I have an LT1 intake here for it, and I'm looking for heads. I'm wanting a low-mid 13 out of it now (+ tires and tune) and then 11's next year with heads/intake.

Thanks for the support so far... I just wanted people to not be scared of using the hotcam. Its works great!

**On side note... these L98 iron heads did NOT have to be machined for springs OR the .525" lift. I had them checked out and I ran stock diameter TPIS ZZ9 valve springs, and used intake style retainers all the way down the motor. Clears without ANY problems. Pushrid holes are NOT elongated either. Just wanted to give a heads up to people. Seems like a lot of ppl are scared to run this cam... thinking it won't run right, or that you'll need extra head machine work. Gotta run. Later

 

BTW, I siamesed about 3-4" down into the base.

*If I can "weasel" a low 13 out of it now with tires and tuning, imagine what it would do with heads/intake. I'd like to see Kevin91z's car with a miniram or a LT1 intake on it.

 

You wont see my car with a MiniRam, StealthRam, or LT1 intake on it until they're made CA smog legal.

You might see it with the SLP runners some time this year, but I doubt it. Anyone want to make me a deal on a SuperRam plenum and runners?

 

My combo will look like yours hopefully I have the T56 3.42 posi I'm in the process of Hot Cam Vortec heads and hopefully a RamJet intake also I already have Hooker Long Tubes. My question is what fuel pressure are you running??

 

Sorry Kevin, forgot about CA. Well, a superram would be cool then!!


*Are you asking me about my fuel pressure??? I took my AFPR off after the diaprham broke in my Holley, and I'm running a stock one with stock fuel pressure. Later!

 

What is the impedance of the 19 lb/hr injectors (stock LB9) vs the 24 lb/hr (LT1) injectors? Remember that the ECM "code" knows nothing about the load that the injector drivers present to it. So if you change the injectors, and the impedance looks about the same as the stockers, then the fuel delivery will be roughly increased by the ratio of 24/19.... which is pretty much what you were aiming for and why the car would run relatively well even though the stock tuning would seem inappropriate.

BTW, if I have to explain what impedance means, then discussing this further won't help. FYI.

 

Yea, so how do i know how much impedence they both have? I'm pretty sure they're the same resistance. Later!

 

Siamesed base??????

 

i just went 8.98 at 76.14 in the 1/8 and 14.11 @ 96.08 (1/4) LT1 cam, ported plenum, majorly ported base, stock TB and stock runners. also with 22# injectors using the stock '85 305 TPI chip. you have more there. our motors and car are real close. except for the tranny, injectors and cam.

 

Well, ran a few times saturday. It kept trying to mist, so they kept trying to dry the track. At first they only let us run the 1/8. I did about the same as last week, but the clocks at this track are notoriously off. I finally got to run the quarter twice, and the car hooked better, but now the clutch doesn't like these Nittos. Only pulled like a 2.00 frying the clutch. Was hoping for more, but the clutch would NOT hold. Ended up running like 9.1 eight mile times with a 14.0 or so at the end of the quarter. Right at 100mph. Like I said, this track's clocks are off about .2 in the quarter, so I'm guessing those runs were actually roughly 13.8s and the fact that I wasn't even running my previous 8.9 eight times, I think the car would go 13.7 right now, if not better. Probably won't have any more time to find out this season though. Guess I'll have to start changing things up this winter.


*As for ou cars being similar... they kinda are. I have a lot bigger cam, but with crappy tuning right now. We both are running ~8.9 eight times, but I'm about 4-5mph ahead in the eight and quarter.


Later!

 

sounds good... but u guys spent how much getting there... i bought a nirtous kit for a 5.0 mustang and put the pills in it for a 125 shot and ran an 8.8 @78.5 mph with 3.08 highway gears and pulled a 1.9 60 foot with 28 inch tall slicks at 10 psi..... and everything is stock besides headers and cam and basic stuff

 

Yeah, well some of us want our motors to last for awhile. As for money in my car... I only stuck $1600 in this L98. What do you think of that? I really don't think 8.8's with NOS is that great. Once I get my tuning and traction done, this car should be alot faster than it is right now. I really don't have all that much done to this car right now. Basically stock with cam, 1.6s, headers, basic stuff, and the 6-spd (which doesn't really help performance). I think its going great so far. Later!