what causes that? My blue blob seems to run alot stronger right after putting about 4 gals into it. And I'm wondering why? Is it a bad fuel pump or what?

 

Mine does too..it likes it when theres a full tank though.

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1989 Firebird. Modded.
My car is currently listed on ebay:
http://cgi.ebay.com/ebaymotors/aw-cgi/eBayISAPI.dll?ViewItem&item=594662251

"I'd rather run last in a full out race, than to NOT have run at all"
#3 Forever

 

Heh, I was wondering something along these lines. You know how we're supposed to run at the racetrack with as empty of a tank as we can, to reduce weight? Well, what if, when we take off at the green light, the gas sloshes away from the fuel pump's pickup? We'd be starving for fuel, and running slower.

My fastest time ever, with the car in horrible running condition (pre-modded), back in '96, was run with a full tank of gas.


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-Tom P (Hot rodded 1986 Firebird 2.8l)

 

Hey TomP, ask any drag racer and they say running with anything less than full is asking for trouble...! (ive seen john force in the pits before when with a friend..)

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1989 Firebird. Modded.
700r4-->t5 w/ram clutch
Cold air, 1.6 rockers, 21lb injectors, 3" y-pipe, random tech cat, 3" ipipe, flowmaster 80 series 3" in 3" out hand made stainless tips, Lakewood LCA's, Msd 6a, Msd coil, Wonder Bar, 180* stat,
Coming Soon: T/a hood, painted, panhard bar,4thgen front seats, compucam, msd 8.5 wires (accel is CRAP)
"I'd rather run last in a full out race, than to NOT have run at all"
See my car Here!
#3 Forever

 

I've noticed the same thing. Not only on our third gens, but one some other various cars i've driven. Probably the pump isnt getting consistant feed which causes the fuel lines to get less pressure. But then again, as long as the pump is submerged, it should all be good right?

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85 2.8L Sport Coupe 5-speed.
Mods: Hpertech chip and powerstat, MSD 6A-L, Crane fireball coil, Accel Cap and Rotor, Dynomax hi-flow cat and catback system with a dynomax magnum race bullet muffler on the i-pipe, K&N filterchargers, Gutted Air Boxes, 8mm Wires, Eibach Sportlines and Tokiko springs/shocks setup, Global west sub frames, Suspension techniqs front and rear sway bars, and good ole 88 IROC wheels with Kumo Ecstas on em!
"It's not the ricers, it's those damn V8's!"

Wins: 2000 V6 Accord, 69 302 Mustang, 2000 Auto VR6 Jetta, 89 Toyota MR2, 90 Civic Si, 76 350 Camaro, 2000 3.8 5-speed Camaro.

 

I've heard that a lot of drag racers have like a quarter tank in, if not more. They say it helps by keeping the back tires on the ground from the extra weight.

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1992 RS 3.1L Bone Stock

"Yeah, it's a V6 SO WHAT!?"

 

Well if you have FI the reason this occurs is heat! The fuel pump in the tank uses fuel to cool itself thus can work more efficently.
More variables
Water in the tank.
Just plain old low on gas and cant pick enough up to feed the engine.
And my favorite SmartARSS one
Cars always run better with fuel than with out
SSC

 

Might have something to do with sloshing in the tank

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89 Trans Am Turbo 3.8L All stock 43,000 miles #1053 of 1555

Past Thirdgen:
86 Trans Am w/ built 355TPI with SLP goodies and too much other stuff to List. One sweet *** car, wish I would have had a good enough Job to pay insurance on three cars so I could keep it, but for a 89 Turbo Trans Am w/ Low miles, I think I made the right choice!

 

Our F Body tanks are LOUSY designs.
So much fuel is lost/moved during cornering, the pumps starve. Same with drag racing!
It was only on the 1LE optioned cars, that got a great tank (internal baffle).
Then the next year or so cars all got the better tank design.
What was the first year of the 1LE optioned cars?
And will those later F3 tanks fit the earlier cars? Like my 1985??????? I want to go canyon carving & not worry abot the pump starving!

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Chat Soon,
KED85
Karl
1985 Firebird 2.8 to 3.4 swap project for Smog Happy LA, CA

 

well yeah the load of fuel helps the engine get fuel. It also depends on the QUALITY of fuel you get.

As far as the tank itself, after I am finished building this 4.3 I am gonna put in a racing cell. I was looking at a 16 gal tank, a little more fuel to help on long drives(or more fuel to go 8er hunten!)

 

You MUST post a pic after the install!!!!!!
SSC

 

Look in a few super chevy mags... there in there... this one grey/silver camaro after it got stolen and returned this guy went all out and put one in. wanna say it was 22Lx15/16Wx14/15/16D think he said it was a 14 gal though.. I want something a little bigger... But I guess you want pics of that GMC 4.3 TURBO Cyclone Motor though... LOL TTA's eat your heart out!.. LOL

 

"Syclone"
You scored one???

What years were the 1LE option?

------------------
Chat Soon,
KED85
Karl
1985 Firebird 2.8 to 3.4 swap project for Smog Happy LA, CA

 

"psycho"

better burnouts with less gas in it though.
btw: john forces gas tank probably doesnt hold 1/4 of the camaro tank. if your racing just about any class with the word "street" in it, you only want about 4 gallons, & a better fuel pump if you have a problem with it.

[This message has been edited by slix (edited September 02, 2001).]

 

You bet! Ive wanted to see any 4.3 mounted in a 3rdgen. Jester said he was working on one in his spare time so let the race begin
SSC