40 to 50 is my max road speed...help

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02-02-2015, 10:43 PM

#21

rustED

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Quote:

Originally Posted by Yotard

My 87 3/4 ton suburban had a 350 with th400 and 3.42 gear ratio your 5.29s are way too much for this set up. I ran 35s on my sub no problem at the stock gear ratio

I agree. My 83 K5 blazer had a 350 with th400, 3/4 axels with 4.11's and I ran 35s , 36's and then 38's with no problems.

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02-03-2015, 11:05 AM

#22

skypilot

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Quote:

Originally Posted by cstrode55

I have plenty of power,when the trans shifts it chirps tires,I'm just wound out like I'm in 4lo...I tried to search t400 with 5.29,I found drag racers like this setup for 1/8 mile...witch is about the distance I'm in high rpm,3500 to 4000...I seen some time slips with rpms,one was 73mph at 6900,so I think my tire/gear/trans setup is my problem...gona look into 4.11s and repost

Tire diameters are off. Drag cars use 28" or less diameter tires. Unless its a really expensive machine. My Chevelle had 28's and my current Hemi car has 24".

Can you borrow a set of 35" or larger tires from someone?

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02-21-2015, 05:15 AM

#23

Cookie Monster

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Yeah I'm in the boat with the rest of the guys saying your gearing is to low. Get your hands on some 4.10's (Should be able to source them fairly easily) and you will be laughing all the way to the trail!

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09-01-2015, 04:13 PM

#24

Bumpin' Yota

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So was it your gears being too low? Seriously switch to 4.10s or even 3.73s.

5.29s and small tires combined with a 4k rpm limit and I could see only doing 50....