1970 GTO Version 2.0

[trapin]

Fun stuff.

OK lets get back to the fuel system. Now...where did you get your regulator from, how much and what type of fuel tank are you running? Sumped? Do you have a pump installed in the tank or are you running an external pump?

Looks great Andrew. I finally made it out to the garage today and started my window installation. I hope to beworking on the fuel system sometime in June and I'll probably come back to this thread time and time again for technical help.

[andrewb70]

Tony,

I got the regulator/filter from RockAuto.com. It is an AC Delco. Just look up 2000 Corvette. It was about 40 bucks. My fuel tank started life as a new, stock replacement tank. It was modified by Rock Valley to have an internal pump installed along with a sump.

Andrew

[trapin]

Is the sump needed for a street car? Do they put a baffle in the tank as well to go around the pump? That is what I plan on doing, sending my tank out to Rock Valley. That's a great price for the regulator/filter. Street & Performance wants a kidney for one of their's.

[andrewb70]

Is the sump needed for a street car? Do they put a baffle in the tank as well to go around the pump? That is what I plan on doing, sending my tank out to Rock Valley. That's a great price for the regulator/filter. Street & Performance wants a kidney for one of their's.

The sump was needed under the fuel pump insert because the A-body tansk are very shallow. The baffle is part of the insert and keep fuel from sloshing away from the pump "sock."

I think the Street and Performance filter kit includes some lines and fittings, hence the higher price. I like to do my own thing so I went to the local hydraulic hose company and they had everything I needed.

Andrew

[gearbanger]

I am very interested in the hydraulic clutch slave and master. Are you using the Centerforce dual friction clutch? I am wondering what the best setup would be for the pontiac motor, TKO 600 setup? Would keisler be the best place to contact? I saw that McLeod had a setup that some pontiac guys had used.

Since I stepped up to 2" headers, that z-bar has really been in the way!

[andrewb70]

I am very interested in the hydraulic clutch slave and master. Are you using the Centerforce dual friction clutch? I am wondering what the best setup would be for the pontiac motor, TKO 600 setup? Would keisler be the best place to contact? I saw that McLeod had a setup that some pontiac guys had used.

Since I stepped up to 2" headers, that z-bar has really been in the way!

I am using a stock LS7 clutch, but that really makes no difference as far as the hydraulic bearing is concerned. If you are using a TKO 600 I see no reason why you would not go with the complete Keisler setup. Their bearing mounts on a custom transmission front bearing retainer that is included in the kit. I can't really commend as to how well their bearing works, but I can tell you that I am ery pleased with the way the MC works.

Andrew

[gearbanger]

Thanks Andrew, I will check them out. I just went back and reread and realized you have a Richmond. I guess Keisler would have the TKO stuff already scienced out pretty well.

I was wondering what else are you doing to that 6.2 liter to try and get 425 horse at the wheels? That is pretty much z06 performance and it will probably take more that just the ls7 cam to get that out of the 6.2 liter. Are you putting on a blower?

[andrewb70]

Today I worked on the rear end. I degreased it and gave it a rattle can make over. Along with the cosmetic touch up I installed new upper control arm bushings and finished up the installation of the weight jacks.



If anyone else is using these weight jacks, I would highly recommend painting them. They are steel with a black oxide coating. I already saw signs of surface rust after sitting in the garage for only 2 weeks.





Tomorrow the rear end will get plugged back in and I will start on the wiring. With any luck, the engine will be going in next weekend.

Andrew

[Smock67]

Amazing progress Andrew and some great technical information. I love it

[trapin]

"Strip don't lie"

Andrew I think that's your new motto.

[gearbanger]

I guess chassis dynoers have just used data from so many cars that they have come to see the loss work more on a percentage of the total. It makes sense to me that the harder the load is on driveline, the greater the friction would be and thus the more loss you would see.

I do like the new motto idea, "Project Strip Don't Lie"

[parsonsj]

Well, strippers may not lie, but they sure use up your dollar bills in a hurry.



Anyway, Andrew, keep the tech coming. Great stuff!

jp

[David Sloan]

Well, strippers may not lie, but they sure use up your dollar bills in a hurry.



Anyway, Andrew, keep the tech coming. Great stuff!

jp

Ant that the truth!

Its good to see you working on her again!Andrew

[andrewb70]

The rear end is back in the car and the spring adjusters work great. Here is what the spring looks like at the new ride height.



The old ride height was 28" to the top of the wheel well opening. The new rise height is 26". This is as low as I am going to go. As you can see there is not much room between the axle tubes and the exhaust. The 2" drop makes a huge impact in terms of looks. I have tall, 28", tires and now they are tucked up inside the wheel well.

Andrew

[Young Gun]

cant wait to see how this looks! progress has been awsome so far!

[jackfrost]

Andrew, I'm a little confused. it looks like adjusters add a couple inches of height, even if they're all the way down... did you use a much shorter spring to allow for a 2" drop after the height of the adjuster was added?

thanks.

[andrewb70]

Andrew, I'm a little confused. it looks like adjusters add a couple inches of height, even if they're all the way down... did you use a much shorter spring to allow for a 2" drop after the height of the adjuster was added?

thanks.

I used a much shorter spring to compensate for the height added by the adjusters. I am using 175lb/inch springs that have a 9.5" free standing height.

I also found some dyno numbers for a stock LS3 Corvette.

http://forums.corvetteforum.com/show....php?t=1749988

I see no reason why my combo should not make my goal of 430 RWHP.

Andrew

[gearbanger]

If it sounds too good to be true, it probably is. I like how that one guy asked, "was that a dynojet dyno?

Bench racing is bench racing. Drag strip numbers are deceiving too. The setup of the car controls how close you run to those generic calculators. How much of that power you are actually using depends on how well you hook, and all that.

Stick that motor on a real (DTS) dyno before you drop it in the car. It's the best money you can spend. I've heard plenty of stories of picking up over 100 horsepower on the dyno with tuning. 500 bucks for some dyno time is well worth a possible 100 hp.

[andrewb70]

Bench racing is bench racing. Drag strip numbers are deceiving too. The setup of the car controls how close you run to those generic calculators. How much of that power you are actually using depends on how well you hook, and all that.

Actually the setup of the car has very little to do with the trap speed. Using the weight of the car and the trap speed is a very accurate way to determine the power that the engine makes.

If you want to make a statement, just say it. What's your point?

Andrew

[andrewb70]

It is amazing what difference 2" in ride height makes. The rear seems to sit so much lower now. I am sure part of this is due to the fact that I have tall tires and now they looked tucked inside the wheel well.



Andrew