yeah, bout that, maybe 15.5 gallons max for the LT1. i know my buddys 01 WS6 had like a 17 or 18 gallon tank. not sure when they made it bigger. you guys getting 180 to a tank, where are you filling up and what kind of driving are you doing? city/highway split? high revving? driving like a granny? i just cant sacrifice that many miles per tank.........
Brian

 

I don't go driving around at WOT but I don't drive like a granny either. I do both city and highway driving. Plus I keep the revs over 2000 rpm when driving, the cam is too soft under 1500rpm. Even with 4.11s I only use 6th gear on the highway.

But hey, if I was worried about gas milage, I would have bought a Honda Civic

 

nice #'s.

 

Sweat #'s now i now i picked the right cam i have the same set up as you but Phil is doing a full port . i have a ? why run a cooled plug? and what plug should i go with ? tr6?
thx

 

I'm no expert on what plug to use but I've been doing a little research and found out a few things.

• Colder plugs are better for high compression engines, not just nitrous and supercharger applications. My heads were milled quite a bit before I bought them plus I'm using a thinner head gasket.
• You want to run the next colder plug for every 75-100hp you make over stock.
• Run the coldest plug you can get away with without fouling.

I'll switch to NGK TR6s and go from there.

 

well i got 150 on about half a tank today so it is not to bad. Mixed driving leaning towards steady 40MPH driving. a few burn outs and WOT runs to 120MPH.

BTW I run TR6 plugs. seams to work well at 11.0:1

 

1/2 a tank on the guage or at the pump? damn GM gas gauge on my car at 1/2 a tank actually means im 2/3 of the way down, and it fills up way past full..........quite annoying.
brian

 

Congrats, great #s!!!

 

Whats good exactly? I got 17-19MPG average with my setup, since it was mostly semi-stop and go I never saw in the 20s.

 

thats good. i drive a truck that gets 12/13mpg and thats good for a truck.

Brandon

 

That is not very good for a newer truck. Take my old 89 GMC longbed with a 166K 305 which still gets 15-16 mpg. When I bought it with 113K, I was getting 20-21 mpg.

Now it also has no acceleration either, so I guess there is a trade off.

 

But J, your truck makes a nice psuedo-racer

 

I will let ya know that many Civic and Cavalier have faced the wrath of my truck.....

 

Grease-

What was your race wieght?

 

Last time I weighed it, it was 3430lbs with a ¼ tank of gas. That was without me. Since then I've removed my rear bumper support but added a pair of BMR boxed subframe connectors. So I guess I'm still about the same weight as before.