I got it now. You made it clear. Thanks!

 

Glad to help clear the way.

 

Lots of ideas and info for everyone. Good technical debates as well. I try to learn something new every day. Thanks for the posting and as soon as I get a few mechanical problems fixed so that I can keep on the road I will resume testing and experimenting.

I am still averaging 15 MPG at the moment. I have also installed a factory tach in my truck to watch the rpm's. Thanks Conanski for the link to do the swap.

 

On the highway, driving nicely, my old 89 with a 302, 5 speed, and 3.08 open rear end (bed empty) averages 21 mpg. In the winter time It drops to 17.

Im not pissed at all, but I sure would take a 460 that got 15 mpg and add it to my collection!

 

I think the same way!

Although I don't think a 460 would give me the gas mileage it would give you. Tranny, rear, and tires. =/

 

Been a while since I updated. I am currently averaging 14.75 MPG give or take. I think the drop is due to an exhaust leak ahead of the 02 sensor. I am going to fix it by installing a set of headers as soon as I get about $300 saved up.

 

New update. I installed a set of headers on my truck and got 16.757 MPG on the way up to Boise. I knew that they would give me a little boost in mileage but I did not think I would get that good.

 

What about power?

 

Due to money being short I have not had a chance to test the power yet. I did have to take off from a stop sign to chase someone down and was smoking the tires though the intersection though.