[lt4camaro]

Originally Posted by 6spdhyperblue

Have you guys actually measured these? Now that I’ve had these mounted and unmounted, I don’t see how they are measuring over 28”. I measured with a level and a tape measure. They seem almost exactly stock SS and LT1 height

Yes, 28 inches on the MT ET street R

[KingLT1]

Originally Posted by lt4camaro

Yes, 28 inches on the MT ET street R

What do they measure on the car loaded?

[lt4camaro]

Originally Posted by KingLT1

What do they measure on the car loaded?

I would guess the same thing, on the car with full weight and 16lbs of pressure

[KingLT1]

I bet they are shorter.

[lt4camaro]

Originally Posted by KingLT1

I bet they are shorter.

They should measure shorter from pavement to the top of the tire under full weight and 16PSI, but of course the diameter doesnt change, people could measure horizontally with the tire on the car LOL.

BTW King, someone hinted I should ask you a Lambda question. My NA stock exhaust system car with a unported LT2 intake and 91 MM solar TB only was dyno tuned WOT 86 lambda on 93, and 87 lambda on E70. Would this be a considered a safe on the rich side tune? giving up a few horse ? BTW, the HP on 93 was 421, the HP on E70 was 441.

[6spdhyperblue]

I shoot for .89 on E third gear going up a steep huge hill/mtn


Wheel is 13.67” from the center of the wheel to the ground @28psi

Angle throws it off with the pic. But that was done going to the bottom of the center cap, adding to half the center cap size. Used a level and tape measure vertical

[KingLT1]

Originally Posted by lt4camaro

They should measure shorter from pavement to the top of the tire under full weight and 16PSI, but of course the diameter doesnt change, people could measure horizontally with the tire on the car LOL.

BTW King, someone hinted I should ask you a Lambda question. My NA stock exhaust system car with a unported LT2 intake and 91 MM solar TB only was dyno tuned WOT 86 lambda on 93, and 87 lambda on E70. Would this be a considered a safe on the rich side tune? giving up a few horse ? BTW, the HP on 93 was 421, the HP on E70 was 441.

Agree, but you should set the tire height in the tune to what it measures loaded and that is normally about .25 shorter then advertised.

.88 is what I would normally target so yeah it's plenty safe. But I doubt you are giving up much more than a few hp.

[lt4camaro]

Originally Posted by KingLT1

Agree, but you should set the tire height in the tune to what it measures loaded and that is normally about .25 shorter then advertised.

.88 is what I would normally target so yeah it's plenty safe. But I doubt you are giving up much more than a few hp.

Thanks King.

[lt4camaro]

Originally Posted by 6spdhyperblue

I shoot for .89 on E third gear going up a steep huge hill/mtn


Wheel is 13.67” from the center of the wheel to the ground @28psi

Angle throws it off with the pic. But that was done going to the bottom of the center cap, adding to half the center cap size. Used a level and tape measure vertical

[6spdhyperblue]

I don’t think fueling on E makes as a big a power difference as it does on pump gas.

I like leaning it out to push down injector duty cycle being we’re at sea level.

[6spdhyperblue]

Ran at island dragway last night. Pretty happy with the results in the sig. was full weight and more than a 3/4 tank of fuel. I installed et street fronts this week as well

Time to turn up the tune and drop all the TM and NLS stuff and get this car moving.
Also need to learn to drive. My launch was pretty bad.


Thoughts:
More wiggle room for the 26” between too much and a bog off the line.

I dropped the tire down to 17psi from 19 and it picked up et and mph.
Thought that was interesting.

Also the 28” tire def provides more cushion for the drivetrain