A stock 87 LG4 T/A combo?????

The fastest I could get my car to go was about 150kph. The engine would red line after that.. is this normal? It felt like if it had one more gear, it would go a lot faster..

 

Mr. J,

I would think at least 170 would be right, even for an ELGEE-Four.

For those of you who didn't catch the comparison right away, maybe this handy little utility would help:

Conversion Utility

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Vader
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Adobe Acrobat Reader

 

O.K. So why am I so slow? As far as mods go:

No emmisions.
Deleted Cat
Open element
Flow master
NOS (Not used until msd equiptment and fuel pump installed)

 

if your gears allow you to reach a higher maximum speed at redline than maybe the torque convertor is slipping like hell...but most likely you are running out of gearing...what is your rear end ratio, tire size, tranny and redline? With that we can calculate your topspeed

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89 GTA 350 T-Tops White/Grey----Looking for a little more performance than stock!

 

Not to pi$$ on everyones parade but a top speed calculator is only a very rough estimate. Two main factors are left out total vehicle weight and aero dynamics.

 

If you have the automatic 700r4 tranny you probably can't get the 3-4th shift at WOT. When you hit that speed at the red line, let off to about half throttle and see if it shifts. I'm guessing you are hitting your top speed in 3rd gear, not overdrive.


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350 with stealth intake, holley carb, 470 lift cam. 700r4 with .5 boost valve, vette servo, tci lock-up kit, B&M megashifter. Richmond 3.73 gears, powertrax locker, timkin bearings, synthetic lube. Custom 3 inch single into 2 2.5 pipes. 1 1/2 drop springs, 1 5/16 solid front sway bar, 1 inch rear bar, custom subframe connectors, custom LCA relocation brackets. Kobel ground FX, currant red metallic paint. Lots of other stuff...
82camaro

 

Cody...rather than apologizing for pi$$ing on peoples parades why not offer up a solution. I was not saying that he would have his actual top speed just his theoritical which would guide him. If his calculated top speed is 200 KM/h and his is only pulling 150 KM/h then there is something obviously wrong because at those speeds aerodynamics and weight would not have such a huge impact, my estimate he should be within 10-15 KM/h...if he was uproaching speeds over 200 KM/h then these factors would have much greater impact...and the faster he went the more they'd factor in...anywayz stop trying to be such a smart-alec

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89 GTA 350 T-Tops White/Grey----Looking for a little more performance than stock!

 

Right and wrong. Aerodynamic drag, rolling resistance and grade, the latter two of which are impacted heavily by weight, are the factors a vehicle must overcome to increase it's speed.

However, he should be somewhere above 50km/h (my jacked up Blazer is faster than that, it weighs more and has a much higher drag coefficient) as you stated.

82 has probably hit the nail on the head.

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1990 IROC 350
Mods: Too busy trying to make it run right to mod it.
Airfoil, Dynomax cat-back, MSD coil, 180 t-stat, Bald Eagle tires,
Hypertech fan switch, Accel 23# injectors, Holley module, ported plenum,
Ported Daytona Yellow stock base, Moroso valve covers, other stuff,
Streetdampr, Ruger P95DC, hot wife, new oil filter, !cats, !TBC, !AIR.
18.0 @ 85MPH since I'm one big-a$$ MF
"It's better to have and not need than to need and not have."