Quote:
Originally Posted by bubba428
Any body have any suggestions on how to squeeze a few more tenths out of an 86 T/A. I'm trying to get a 14.5 out of it before I do any thing major. So far with a intermitent mist fire and a 2.73 LSD rear i ended up with a 15.0 @ 90mph. not the thing is I hit my 1/8 at 71mph. I need some Ideas on how I can get more pull in the top end. Also I'm still only cutting 2.1 60' constantly no mater what rpm I launch from. I know the best way to cut that Is to drop the POS 2.73s but what else could I do. keep in mind I'm trying to get it ready by friday, and I've already started some severe WR.
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welcome sir to wide wonderful world of TPI cars! Typically, there isnt as drastic a gain from 1/8-1/4 in a lot of N/A cars, generally turbo cars are the ones who really get going. Tuned ports are known for their bottom end...you need to work on hooking if you want to gain a couple tenths. Dont slam the throttle when launching and dont launch high, launch at 1100-1200. Say to yourself "hippopotamus" as you are giving it gas during the launch, at the end of the word you should be on the floor. Also, don't do some crazy burnout with street tires on it. Yes, you need heat in them, but doing a big burnout is going to make the compound a little more greasy than sticky. Tire pressure plays a big role, too.
I'm just going to assume this is a totally stock L98 car, even though its probably a truck engine with tuned port. A tune could probably help the car out but on that note EVERYTHING else has to be mechanically sound and functioning for it to be effective. Like batman said, get rid of the misfire. Thats first and foremost. I bet a new cap/rotor, plugs/wires would do that thing some good.
dont complain about the 2.73s either, I was faster with my 305 car so you still have a lot of room for improvement. If anything, more gear will make you more likely to spin without a good tire (again, batman said get some DRs but I have no room to talk as I've never raced with them). Work on fixing the car, not making it faster right now and I bet you will pick up your time. If you spend your money on go fast parts the broken **** will end up being a bottleneck so the car's potential won't be realized. good luck.