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Is there anything to be gained in going from the dual 2.5" ATR to the dual 3" GN1 exhaust with the my following combo? Stroker 109, 6265 turbo, 3" ATR external gate downpipe, and cutout/test pipe? I know the total area of the dual 2.5" is larger than the 3" downpipe, so quick math says no, but...

Anyone ever use or test E85 from a Kwik Trip station in the Midwest? I went on their website and found that specific stations list what fuels they have and what the price is. E85 also has a listed blend of E70, but I'm wondering if that's accurate or kept up to date. I did contact them and await...

Searching through old threads and photos on my PC I came across a pic I had saved. I believe this is toomanymodz car which was originally posted here. 15x9 rear with 4.5" backspacing. 295/55 tires. One of my favorites.

Thought I'd post some pics and info since many of the old images on this site are lost. To start my body and rear end are as close to centered as I could get them. Nothing fancy, just did body bushings a decade ago and have dropped lower control arms with adjustable uppers. The wheels are 15x8"...

Can some people please confirm that a 225/70 will fit on the stock size 15x7 wheels on the front without clearance issues? I have 275/60 in the rear and the back is up a little higher to clear. With 28 inch tires in the back and 26 inch up front I really don't like the way the car sits. Step 1...

What have people done to vent the gas tank compared to the factory setup? I'm running E85 w/ 80lb injectors maxed out (100% DC @ 21psi) and want to make absolutely sure the fuel pump isn't struggling because the tank is being put in vacuum. The pump is the walbro 450, racetronix hanger, hotwire...

What are people running for their target AFR at WOT? On the gas scale I've always been between 10.8 and 11.0. With aluminum heads and E85 do we need to be this conservative? The car's gone as fast as 10.70 at that AFR, but I'm wondering if there's more to be picked up. My 80lb injectors are...

Due to my long drives to the track I'd like to have a spare in the event of a flat. Out back I have 275/60's, so I'd need the spare to be 28 inches tall. I still have the factory spare wheel/tire. I used to haul 2 extra stock wheels and floor jack, but I'm over hauling all that stuff. Anyone...

Any of you guys ever use these with E85 and what are your thoughts? I've been using the originally recommended Autolite 103's with my GN1 heads for years. They seem to be working ok, but would like to try a NGK. Compression is 8.5:1, boost is limited to 21 psi due to fueling, timing is 23* and...

Hey gang, can people please chime in and tell me if this is the correct 140 amp alternator that can fit on our cars? I've read that the case may need to be re-clocked and it appears that one of the support bracket mount points is gone. Clocking is no biggie and if it's the little fork shape...

Went to the track last weekend and thought I had the car in great shape. Since hitting the track last fall, where I was pleased with the runs, I've got a new transmission, converter, and removed most of the air conditioning components. The car is running E85 and went 11.29 at 124 last fall. Now...

I normally run a 275/50 on a 15x8 with 4" backspacing on the street. A friend of mine had these tires on the same spec wheels and is letting me give them a shot next time I go to the track. The part number on them is 3355R. My rear end, axles, steel drums, etc are all stock. I do have heaver...

If I wanted to up my base fuel pressure, to say 50 psi, to stretch my injectors just a bit further that would make the car want to run richer under normal driving conditions, right? Then the O2 would compensate, drive the BLM's down, and it would still run properly, correct? In order to get the...

Just picked up some new wheels and tires and thought I'd share some photos and info. Tires are 275/50/15. MT lists them as being 26.4" tall. In the photo they're next to a Cooper Cobra 235/60/15, which are listed as 26.1" tall, so I think it checks out. The wheels are 15x8 with 4" of...

For sale: PTC 9.5" non lockup only used for the last couple summers. It's for a 200-4R. Very few miles on it and works just as all the great reviews say. Originally purchased from Dusty B here on the boards. $750 plus shipping from Minneapolis, MN.

Could someone please tell me what our stock wheel hub bore diameter is? I'm looking at different wheels, spacers, etc. I think it's either 72.6 mm or 70.5 mm, but haven't found any definitive answers by searching. Thanks.

Here's what led to the problem. Out this weekend running around with the club. Decided to do a little racing, nothing real serious. Car was running well and had been to the track twice this summer with no known transmission issues. Launched, started spinning, lifted, tires hooked, and got back...

Curious to see if people think this is about right for using 80 lb injectors of if something is a bit off. Combo is as shown below in sig. On E85 with -8 feed line, -6 return line, stock fuel rail. I'm hitting 98% duty cycle at 21 psi boost around 5300 rpm. Air temp that day at the track was...

I'm in the process of installing a vac pump for use when under boost. I've got a new GM 2 wire pump and the respective harness from Racetronix to connect everything. The issue is I have no idea how to mount the thing. Pump did not come with a bracket. Anybody with this pump have good setup...

Ok after working on it all summer I believe the car is now reliable, running well, and ready for the track. The last project was keeping the transmission cool. I have a PTC 9.5" non locking spragless converter. Issues arose on highway cruises and if a made a run temps would spike and not come...