Lateral-g Forums - What gear ratio for 1000hp 69 camaro?

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There's a couple of fun toys! Any video? :thumbsup:

Dude, I bet your car will cost less to build than the sand rails. One of the chassis guys I dealt with was a builder of sand rails from scratch---200k for a turbo'd ecotech 4 seater, evidently, was a fair price. He was doing a couple of them a year. I guess when the shocks are 5k apeice and you need 8 to ten of them--or something like that, it adds up quickly.

I've been in quite a few cars with 1000 or more HP which were street drivers. Most all of them had 28 to 28.5 inch tall tires on the rear (dual purpose street and strip type cars) and, if memory serves, most ran between 3.50 to 3.73. Some of them ran as low as 3.20's, but that typically worked in conjunction with stock ratio's of a T400 trans (2.48 first gear low I believe) to tame the launch. They all seemed to do well on freeway with these setups, but these were with tall rear tires. I'm assuming you will have a 9in center section in the car with this power level, so good news is that a gear change, if necessary, won't be a very intrusive or expensive event.

Keep us posted with pics.

Doug

Quote:

Originally Posted by DFRESH (Post 379534)

I've been in quite a few cars with 1000 or more HP which were street drivers. Most all of them had 28 to 28.5 inch tall tires on the rear (dual purpose street and strip type cars) and, if memory serves, most ran between 3.50 to 3.73. Some of them ran as low as 3.20's, but that typically worked in conjunction with stock ratio's of a T400 trans (2.48 first gear low I believe) to tame the launch. They all seemed to do well on freeway with these setups, but these were with tall rear tires. I'm assuming you will have a 9in center section in the car with this power level, so good news is that a gear change, if necessary, won't be a very intrusive or expensive event.

Keep us posted with pics.

Doug

My tires are 315/30/18, so I believe their just under 25.5 inches tall. Would you say with these tires and a 3:75 ratio, I would get that all around purpose car I'm looking for? I have no experience with horse power on the streets. Everything I've ever worked with is off-road, so I appreciate the advice.

Thanks

you'll be running almost 2600 rpms with those tires and a 3.70 rear end at 70 mph, and that's if you use a lock up converter. It'll be higher if it's non-lockup.

That is not what I would consider great rpm's for cruising, but it's doable.

with that much power the last thing you need is a lot of gear especially with that short tire. I would be down 3.42, 3.30

I believe I have made up my mind. I'm going to order my rear end with a 3:50 gear ratio and go from there. From everyone's advice, it seems to be a pretty decent staring point.

Thanks

Quote:

Originally Posted by Sieg (Post 379510)

There's a couple of fun toys! Any video? :thumbsup:

I do not know how to add a video on here, but here is a link to a video of one of our cars.

https://www.youtube.com/watch?v=o8LevEkvlhs

Quote:

Originally Posted by Pasquale (Post 379745)

I do not know how to add a video on here, but here is a link to a video of one of our cars.

https://www.youtube.com/watch?v=o8LevEkvlhs

Suspension balance is looking good. Thanks for sharing with an old desert rat. :thumbsup:

On YouTube, click the share button, copy the code.
On Lat G click the green film icon and paste the code so it looks like this:
YOUTUBE]http://youtu.be/o8LevEkvlhs[/YOUTUBE
(I cropped the brackets for display)
Then remove the forward slash and everything left of it:
YOUTUBE]o8LevEkvlhs[/YOUTUBE

Good God Almighty that looks like fun....

Awesome!! :thumbsup: