Meissen's LT1 Rebuild Thread

[9T8W66]

I look at it this way
If your in for some spirited driving cruising in 3rd puts you closer to the powerband and when the car downshifts it has less gears to go through.

As for accelerating from a stop there should be no difference.
One reason is because the trans won't shift into 4th (OD) at WOT anyway.

[meissen]

Well, my thought behind is that you definitely have more down low torque in 1st gear than 2nd, more in 2nd than 3rd... I'll try and find some data to support what I've been told, I'm just going off of what Dan told me. I mentioned it to Steve over the phone and he confirmed it - said to always have it in 3rd when you're playing around on the street.

[MP81]

I've never heard that...the only difference that I know of between D and OD is it won't shift into 4th...

My Cobalt doesn't even have an option, it has L, I and D. (D includes OD).

[98blackbeauty]

Well looks like it never ends, this weekend or next week, depends when pump comes looks like we will be installing new fuel pump! You know Brian, there will be many pics.

[meissen]

Yeah, when we dynoed the car it had a linear AFR going from fat to lean. Dr Phil was doing the dyno and he thought it could be the fuel pump. Since it's still the v6 fuel pump in there and (as far as I know) it's the original with the car... it's just a good time to replace it. That and the fuel filter. So, hopefully we'll get both of those swapped and then there literally is nothing on this car that we haven't touched or replaced and she should (hopefully) be good for a long time!!!

Plus most importantly, Steve said it'd be a good idea to replace those before he finishes the tune - no sense in tuning it if the fuel pump is not able to give enough fuel.

[Darren]

decide how you are doing it yet? trap door or dropping the tank?

[meissen]

dropping the tank. I talked to Steve and he said he regretted the trap door.

[MP81]

Good call on dropping the tank.

That's how I had mine done.

What type of fuel pump are you going to be running?

Just make sure it'll be good to go to the west side! Let me know if you need a hand during the week...

[JoeliusZ28]

dropping the tank should be pretty easy now that the axle has been out already

[98blackbeauty]

yeah but the exhaust I believe has to come down or out too. we'll see, still waiting for pump to come. They must be shipping it by boat from china!

[Phantom409]

Why did Steve regret the trap door??

I know several peeps that have done it and it has saved them time and money more than once.
When mine dies, it will be getting a trap door

[CAM N' GTO]

Thats the 1st person I have heard of that regretted doing the trap door...

What pump did you buy? a 225lph I hope

[MP81]

Brian bought a 255lph/67gph Racetronix.

[meissen]

Yeah... Big THUMBS DOWN to Thunder Racing. I will NEVER order from them again. It's been almost a week and I haven't even so much as gotten a confirmation that they've received my order - all I got was the confirmation that paypal sent them my $150 I e-mailed them already asking for a status update and alas no reply.

Go figure - they JUST sent me an e-mail telling me the pump shipped today (It takes them 5 full business days to ship an item? ) and I should be receiving the shipping confirmation tonight. Remind me to only order through Creight.

[csmith4153]

What pump did you go with?

Edit: I should of read more of the posts! LOL!!