New user with a classic car

[rgathright]

Originally Posted by Clev

Back in the mid-90's, Car and Driver claimed an average 26 mpg while driving 100 mph across Montana in a Z-28.

Those engines had high amounts of low-end torque and a good tranny gear ratios. Just shift gears and never hit the gas pedal!

[Laurentiu]

The higher the torque the higher the speeds at which you can "cruise" for FE...Diesel's rule in that

[MadisonMPG]

No one hates V8 here, we hate people who drive inefficiently.

[bgd73]

301 pontiac. I ran one in a delta 88. Very reliable, EGR was a monster, engine needed very deep cleaning, and even removed nuclear debris (Quite a phenomona if to live through it) EGR has been a perfect omen...even in a little subaru...

when back to as normal as I could get it (I was 16 back then)
new lines, etc, 15mpg was good.

the highway had an unusal realm..does your transmission indicator have an "S" somewhere inbetween D and 2 and 1?

that was amazing, kinda like an older powerglide(?) 2 speed with a looooong drawn out gear.

treat it like the gearing of a diesel, big tread etc (I don't mean donk)

I wondered what staying in the rochester little two barrel side of things correctly would have done for my own 301. good luck...

a 600 holley even barreled would be a very very mathed fit.

[ZenArcade]

I managed to find out that I have 2.29 gears in the back, so that puts me at around 1600 rpm at 60 mph. Not bad at all. I'm almost positive I've got a TH200 3 speed on it, and I'll check the oil pan for confirmation next time I drive it.

I've also ran several different dyno's and simulations on it, and I found that a mild cam with a little bit of overlap would increase my highway mpg by 2-5. While you can't exactly trust the numbers 100%, it does tie in with logic. The stock cam has almost no overlap, if I remember correctly. So some overlap will do her good in all realms of efficiency. Not to mention that I very rarely run at WOT, so my EGR might as well not exist.

Oh and I'm also going to lean up the mixture a little bit. Smells a little too rich right now.

And a tranny swap is almost 100% out of the question right now. I don't even come close to having the money right now. One day I'll throw in a 4 speed though

[Domman56]

Haha i understand where you're coming from I've got a camino with a 5.0 V8 and that gets pretty good mileage too These old V8's are actually pretty efficient if you drive em right

[Frank Lee]

No, they aren't.

In this day we should not be satisfied with anything less than 30 mpg.

[Clev]

Originally Posted by Frank Lee

No, they aren't.

In this day we should not be satisfied with anything less than 30 mpg.

From any vehicle. There are six 2010 SUVs rated 30+ mpg, and there's no reason why all current passenger vehicles can't hit that.

[Clev]

Originally Posted by Clev

From any vehicle. There are six 2010 SUVs rated 30+ mpg, and there's no reason why all current passenger vehicles can't hit that.

Let me clarify. That's just large SUV's. There are obviously many smaller utes and crossovers that qualify as well.

30 MPG SUVs | New SUVs with 30 Miles per Gallon

[ex-x-fire]

Get a TH2004R tranny, w/ the BOP pattern. TH700r4 is either SBC or 2.8L patterns. Dump the 301, if you ever take the intake off you'll know why. This is a castration of the pontiac V-8s. Short stroke, no compression ratio worth mentioning, & siamised ports in the heads, if ever GM made a boat anchor this is it. Get a real pont 350, all accessories should swap over, the longer stroke makes much more torque to handle taller gearing. Anotherthing to watch out for on any pont. v8 is very weak timing chain & gears.