1970 GTO Version 2.0

[70 Chevelle]

Any plans to weigh her with the LS in it?Is she on the road?

[andrewb70]

Any plans to weigh her with the LS in it?Is she on the road?

I will have the car scaled. There is a great shop in Nashville that sets up circle track cars. He has a flat plate and scales. The plan is to get the corner weights perfect so the car handles as well as it can.

My x-pipe came in today, but I won't be able to get it welded up until Thursday. Aside from that and the shaker the car is buttoned up and ready for a long drive.

Tomorrow I will post pictures of how I ended up putting in the rear end travel limiters. These will keep the rear end from dropping too far down and the springs from dislodging from the upper pockets.

Andrew

[Finch]

I will have the car scaled. There is a great shop in Nashville that sets up circle track cars. He has a flat plate and scales. The plan is to get the corner weights perfect so the car handles as well as it can.

My x-pipe came in today, but I won't be able to get it welded up until Thursday. Aside from that and the shaker the car is buttoned up and ready for a long drive.

Tomorrow I will post pictures of how I ended up putting in the rear end travel limiters. These will keep the rear end from dropping too far down and the springs from dislodging from the upper pockets.

Andrew

Great progress Andrew, Let me know when if your coming down to Nashville with the car. I want a ride.

Brian,

[andrewb70]

Great progress Andrew, Let me know when if your coming down to Nashville with the car. I want a ride.

Brian,

Brian,

I will be down in the next couple of week to get the corner weights set.

Today I got the exhaust buttoned up. A new Dr.Gas x-pipe was installed and connected the headers to the mufflers. The car is very quiet. Almost too quiet. I has a nice deep tone. It is a hair louder than a new ZO6 Corvette. I got the wideband hooked up as well and as suspected the car was a little rich. Once I drove it a little the ECU started trimming the A/F ratio and now it is very close. I may not have to get it tuned at all. We'll see how the WOT A/F ratio is on the dyno.

I also weighed the car on the new scales at Beech Bend. I had 1/3 of a tank of gas, no hood, no passenger seat, and I was in the car. I think I am about 275.

Anyone care to guess what the car weighed?

Andrew

[trapin]

3525lbs

[compos mentis]

3850 lbs

[Young Gun]

3670 lbs

[andrewb70]

With me in it, no hood, no passenger seat, 1/3 tank of gas, it was 3828.

3823
minus 275 for my fat ass
add 50 for hood
add 25 for seat

3623

So it looks like the car lost a little under 300 pounds from the swap. Not bad. It will be really interesting to get the corner scale data.

Andrew

[tom_a]

Cool....any video coming with exhaust on now??

Tom

[Finch]

Brian,

I will be down in the next couple of week to get the corner weights set.

Today I got the exhaust buttoned up. A new Dr.Gas x-pipe was installed and connected the headers to the mufflers. The car is very quiet. Almost too quiet. I has a nice deep tone. It is a hair louder than a new ZO6 Corvette. I got the wideband hooked up as well and as suspected the car was a little rich. Once I drove it a little the ECU started trimming the A/F ratio and now it is very close. I may not have to get it tuned at all. We'll see how the WOT A/F ratio is on the dyno.

I also weighed the car on the new scales at Beech Bend. I had 1/3 of a tank of gas, no hood, no passenger seat, and I was in the car. I think I am about 275.

Anyone care to guess what the car weighed?

Andrew

Cool,

Give me a ring a day or so before you head down so we can meet up. I may even have the body back on the vette by then and you can take a little memory rod with the LS6.

[andrewb70]

Cool....any video coming with exhaust on now??

Tom

I will see what I can do Tom, but it is QUIET! I love it. I think I am officially turning into an old f***er.

Andrew

[tom_a]

I will see what I can do Tom, but it is QUIET! I love it. I think I am officially turning into an old f***er.

Andrew

Well, I am 38 also, so I must be old myself. I am sure it will sound nice at WOT.

Tom

[lt4malibu]

I will see what I can do Tom, but it is QUIET! I love it. I think I am officially turning into an old f***er.

Andrew

im only 28 and i LOVE quiet/sleeper cars...

ive been watching your thread on ls1tech, the swap is awesome!

[andrewb70]

im only 28 and i LOVE quiet/sleeper cars...

ive been watching your thread on ls1tech, the swap is awesome!

Thanks for the compliment!

This morning I took the GMAT test and my brain was sizzled.

I got a replacement alternator in the mail today. I have to admit that the partsamerica.com exchange system works quickly and effortlessly. I just hope this alternator will last more than a few days. After installing it I drove around town and put about 50 miles on the car. The alternator seems fine and the car runs strong. I got on it a few times and it certainly feels as strong as the big block did, although the lack of torque is noticeable in second gear. I used to be able to break the tires loose from a roll in second. No more. That's not surprising and I am sure that the drag strip times will not be disappointing. This engine pulls like a freight train above 3000 RPM.

I also noticed that it is running fairly rich at WOT. My wideband was showing a steady 11.9:1. That is not surprising since I am using the LS7 tune up. Once the engine is broken in some more I will take it to my local tuner and tweak a little bit. There is no black smoke and no drivability issues at all. I should pull a plug.

On the highway there is still a little vibration above 80MPH. Before doing anything drastic I am going to double check the wheels and tires as well as the driveshaft. Since the car sat for a while it is entirely possible that the tires have developed some flat spots and that will certainly be felt at high speed.

Andrew

[andrewb70]

Tonight I went to Beech Bend for their Saturday night test and tune. With the hood back on, passenger seat installed, half tank of gas, race weight was 3941 with me in it. I was running the same Nitto 555s that were installed back in 2002. Needless to say, they are a little hard. The temperature was about 85 degrees and very humid. After a few crusty passes, I managed to click off my best pass for the night.

60' 2.1
12.78 @ 111 MPH


I am pretty happy.

Andrew

[trapin]

Not bad. Not bad at all.

[andrewb70]

Not bad. Not bad at all.

Not bad indeed, considering I can put a stack of champaign glasses on the engine and they would not topple over. That is how smooth it idles.

Andrew

[tom_a]

Congrats. Sounds like a little more in it with tires

[406 Q-ship]

Andrew, It ran a 12.7 without a tune and a 2.1 60' that is more than pretty good, considering what it will probably knock down in the mileage and fun to the mile.

[gearheads78]

Great build and nice wrie up. I have the same M/C and will be running manual brakes. Glad to here its working. Thats also great info about the driveline angles.