Ironracer
Gearhead
Wow Kim, that Sucks...Diesel is just shy of $10.00 Canadian a gallon. The cheep gas is just under $9.00 a gallon where we are. May have to get a gas miser. I’m looking for a part time job to supplement my pension. Kim
Wow Kim, that Sucks...Diesel is just shy of $10.00 Canadian a gallon. The cheep gas is just under $9.00 a gallon where we are. May have to get a gas miser. I’m looking for a part time job to supplement my pension. Kim
You know where the blame for that lies. Do what you can to influence those that can reverse this and are willing to do so.Diesel is just shy of $10.00 Canadian a gallon. The cheep gas is just under $9.00 a gallon where we are. May have to get a gas miser. I’m looking for a part time job to supplement my pension. Kim
low compression DOSE NOT MEAN GOOD MPGS the key os turning less rpms over drives & gears . that how the new cars run soongood . u cantake a doggymotor &S makit run good out of the hole with a good set of gears if u want the most mpgs out of a motir good comptression & the right cam A GOOD RV CAM WOULD BE A GOOD PIKThinking about building me a 400bb whid 440 crank,ending up whid 451 cui,the direction whid this build is fuel economi not performance,as this engine orignaly is a low comp engine im shooting for 9.5 ratio,any sugestions on cam pistones intake carb,this is a low budget build so cast crank cast pistons and so on,what heads are the most efficent,cast stock heads,valve angles,mild porting.....
I don't care what language you speak, "fuel economy" and "big block" don't belong together. Ain't happenin.
^^^^^^^^^^^^^^^^^^^^^^^^^this !!
for sure when pulling a lot of weight bigger power just loafing along will be more economical than low power working it's nuts off. that's a given.In australia in the early seventies a mate of ours was retiring and about to tow his caravan around Australia and had an almost new Ford Falcon panelvan with 250 cu ins six in it and it got about 12mpg towing and was slow. He wanted to build up his 1952 dodge truck up to tow with. We convinced him to buy all the parts out of a dodge car that was wrecking at the time and we had a low compression 440 engine to install. He put the 440 and torqueflite in it with 2.92 dodge diff , power steering etc. It was a weapon with power to spare and got 21mpg towing the caravan. He went all over Australia and it never missed a beat.
Hi like your way of thinking,what cam did you put in,specs ? This build is still on the drawing board and im gona start saving up parts soon,just want to get it sort of right from the start,im going whid the stock 400 cui and close chamber iron heads,got a buddy whid a full service head shop and he makes 5 angle valve Jobs for nothing so im covered in that part of the build,I always belived in high comp and low friction so im going thath routeI built my 367, for street performance with fuel economy in mind.
But Economy extends to the cost of fuel, so I wanted to try and run 87 gas.
To whit, I thought compression would be the #1 thing. But with iron heads the pressure tops out at around 155 psi. Well I thought about that for a bit. This was in 1998. I had heard that alloy heads could support at least 1 point more compression. I found out later, after more research, why this was said, and also how conservative this was.
So I built my engine for a target of 185psi using alloy heads and a tight Squish, and put the thought of water-injection in the back of my mind, just in case. I put a 292/.509 Mopar cam into it. the pressure was 177psi, close enough.
Well, the beast burned 87E10 right from the get-go, with full-timing no less!
I didn't like that cam, pulled it out, and swapped in a cam three sizes smaller with no other changes.
The pressure jumped to about 195.
This combo made tons of torque, good power, and great fuel-mileage. In fact so good that nobody believes it when I speak the number, so I rarely do. Yes it still runs full-timing on 87E10. It now has over 100,000 miles on it.
The point of this story is that the entire purchase-price of the closed-chamber alloy-heads was recouped in fuel savings within three years as a DD. Since then it has been saving me gas money every time I start it up.
Lest you think that 195psi is a fabrication, I did a survey here on FABO several years ago, and found out that a few members here are running the same and more, to even a tic over 200psi.
There is IMO, NO DOWNSIDE to running these high pressures, for several reasons;
1) your engine is rarely at WOT, so rarely creating these high pressures
2) Your engine is only capable of inhaling a full load of air , for a very narrow rpm window. and only if you cammed it up to do that, and matched all the components to that cam.
3) When cruising in a steady state, your throttle is only open as far as it needs to be to create the motive power for that circumstance..... so the EFFECTIVE compression ratio is NOT nearly what the math says it should be. My Scr to achieve that 190+psi was 11.3. But if my car only requires 35/40 hp to cruise 65mph, maybe the Effective Compression ratio, might be 5/1; IDK just guessing.
If I gear that beast to go 65mph @1600rpm, the throttle will have to be quite far open to get the required air. If I install a small-primary carb, it may get up on the mainjets, where I can control the actual fuel going into the engine, very accurately. That thinking is what got me the very high fuel-economy.
And it can do the same for you. Camming it for that very high pressure is the key.
But if you want to run big-number rear gears, well then this is not gonna work for you. Unless you have an overdrive.
My first language is Swedich if you dont understand what im writing just stop reading
Hi like your way of thinking,what cam did you put in,specs ? This build is still on the drawing board and im gona start saving up parts soon,just want to get it sort of right from the start,im going whid the stock 400 cui and close chamber iron heads,got a buddy whid a full service head shop and he makes 5 angle valve Jobs for nothing so im covered in that part of the build,I always belived in high comp and low friction so im going thath route
Ok i give up to many negative **** go **** your selfs goog byHow much driving do you plan on doing, what mileage does it get now, what does that cost ??
Ok i give up to many negative **** go **** your selfs goog by
If we're being picky.... you should never start a sentence with the word 'and' whether you use a capitol 'A' or notAnd you^ have a few capital letters missing....