You guys got me thinking so I looked up stuff about gasoline,and octane ratings and found that higher octane gas is only good if your engine requires it and is a waste of $ if it doesn`t. I looked up -What octane rating of gasoline should I use - and part of it says that all gas has the same burn rate, and part of it says that higher octane burns slower.I used race gas from the pump @ the track once and it made no difference.
the 4.9L Cadillac V8(preNorthstar) in my buddy's 95 deville "requires" 92 octane but I told him he could safely run 87 as it would retard the timing to compensate, but it does have a 9.5:1 compression, and that car ****in moves. More hp and torque than my 302 and it's in a car . He wasn't convinced though, and continues to run 92....
393Stroker. The reason race gas made no difference is because you most likely didn't change anything with your engine. Race gas is for people with high boost, high compression, advanced timing, etc. This is because lower octane fuels will ignite before the spark comes from the amount of heat and compression inside the cylinder, which is called detonation. It causes pinging and is really bad for your engine. Race gas is also for people with too much money, like my mom's boss who drives his lotus elise around town with 92 in it and has no problems but thinks the 110 he puts in at the track is giving him a performance boost.
It all depends how your car or truck is tuned , most hi performance (built) motors are tuned for higher octane fuel so they can use a more aggressive timing curve... Lew
higher octane fuel doesnt burn faster or slower it is actually less "burnable" if thats what you want to say. that why higher compression engines run it. because of the extra pressure it ignites as well as lower octane fuel will with a much lower compression ratio.
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90 f250 4x4 5-speed 351w headman LT's 33x12.5 coopers CHEVROLET-Cheap Hardly Efficient Virually Runs On Luck Every Time
Disconnecting the heater hose that goes to the throttle body. Thus a colder throttle body and intake
I have a 97 f250, 351W, does my truck have the heater hose going through the throttle body. I will have to look, I would get rid of that anyway, beings we have 800* weather here in South Texas, MAN ITS HOT
the 4.9L Cadillac V8(preNorthstar) in my buddy's 95 deville "requires" 92 octane but I told him he could safely run 87 as it would retard the timing to compensate, but it does have a 9.5:1 compression, and that car ****in moves. More hp and torque than my 302 and it's in a car . He wasn't convinced though, and continues to run 92....
my northstar 4.6 caddy said the same thing, but the electronics on those cars allow you to run less octane gas. It sure liked when you put 93 in it though, but the northstar had a bit higher 10:1 compression. My experience has been that it runs a little better on 92-93 octane but wasnt completely necessary, both the 4.9 and 4.6 dohc northstar do indeed haul ass.
So Das.. when can we expect to see some dyno results?
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Paul O
1990 F150 4x4 XLT X-Cab 5.0, 3.55LS, Comp XE264HR-14, Flowtech LT's to 3" single, FRPP Mass Air Conversion, TweecerRT with BE, Innovate LC-1 wideband O2
So Das.. when can we expect to see some dyno results?
Well, I need some time to gather parts for all of those tests.
Hopefully people will step up and ship me some parts to borrow for testing.
I'm busy as anything until about August 1st or so but after that I should have time.
I'll start with the simple mods that anyone can do.
All testing will be done on my freshly rebuilt 5.0 that is bored .20 over.
All results will be posted in percentage form.
For example, CAI added "0.04" of total power.
I'll compile a list and post it here to make sure I'm including everyone!
__________________ Stoney | Montana Chapter Leaderof FTE Live in Montana?Come joinThe Montana Chapter,
1993 Ford F150 XLT 4x4 5.0 5spd with a Fresh Rebuild
Write your congressman!
both the 4.9 and 4.6 dohc northstar do indeed haul ass.
yeah he let me drive it. sloppy steering and the shifter moved freely without being pulled back(not so luxury imo) but i put it down on a straightaway and im used to my 5.0 with 39k that 4.9 with 132k snapped my neck and zoomed. Computer controlled suspension felt like i was floating above the road. Then the road turned and i had to slow down bc of the sloppy gpa steering. FWD and it's looser than my RWD F150, cmon caddy wtf lol
And Cadillac says its "within specifications" for the Northstar V8 to burn a qt. of oil in 500 miles..........Uh, my 460s oil level never goes below full in 3,000 miles!
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FORCE IT!,IF IT BREAKS IT NEEDED REPLACED ANYWAY!
IF IT CANT BE FIXED WITH A HAMMER, ITS A ELECTRICAL PROBLEM!
Still bitterly clinging to guns and religion.
Dave
Oregon Assistant Chapter Leader: To join the Oregon Chapter, click HERE
that's worse than dodge. dealers were getting customers who had intrepids burning oil so to avoid fixing it dodge released a tsb saying it's normal to burn 1 qt every 1000 miles. In a motor that holds 4 qts that leaves you putting 7 qts in every 3000 miles. Normal? Maybe for a dodge owner, but not for me
some engines do burn oil though if they're high compression or run really hard, depending on what kind of oil you use. Cheap oil in an engine that's driven hard will break down and burn off far before 3000 miles. That's why we pay 5 dollars extra for synthetic . That and valvoline is supposedly guaranteeing my engine to 300k if i run their synthetics in it, so that helps too lol
not as bad as dodge. dealers were getting customers who had intrepids burning oil so to avoid fixing it dodge released a tsb saying it's normal to burn 1 qt every 1000 miles. In a motor that holds 4 qts that leaves you putting 7 qts in every 3000 miles. Normal? Maybe for a dodge owner, but not for me
Put that on a dyno!...............Probably a mopar performance feature.....extra top end lubrication!
Any more oil consumption than that and you would have to call it a 2 stroke!
__________________
FORCE IT!,IF IT BREAKS IT NEEDED REPLACED ANYWAY!
IF IT CANT BE FIXED WITH A HAMMER, ITS A ELECTRICAL PROBLEM!
Still bitterly clinging to guns and religion.
Dave
Oregon Assistant Chapter Leader: To join the Oregon Chapter, click HERE
well at least now no one will argue with me. the dodge fans hated knowing that my 95 f150 with a 302 and 3.55s has the same towing rating as their goofy lookin 09 ram with a hemi, but now they're really mad that they're owned by FIAT(they did do good things for ferrari though so maybe dodge wont suck so much pole now?). GMs kinda in the ****ter too since they're owned by the govt, it's like paying tax on money that's going straight to them anyway, awesome right? They'll all learn, i mean ppl told me this video was staged.
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. He wasn't convinced though, and continues to run 92....
1997 Ford F250 4x4 
