The 1947 - Present Chevrolet & GMC Truck Message Board Network

Page 2 of 2

Show 40 post(s) from this thread on one page

The 1947 - Present Chevrolet & GMC Truck Message Board Network (https://67-72chevytrucks.com/vboard/index.php)

- The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board (https://67-72chevytrucks.com/vboard/forumdisplay.php?f=4)

- - results from a rear end swap (https://67-72chevytrucks.com/vboard/showthread.php?t=362921)

68 TT

09-17-2009 05:17 PM

Re: results from a rear end swap

Quote:

Originally Posted by 3r!c84 (Post 3522613)

yea i got a 3.42 in my 305 th350
wish i has a OD

Try 5.13's and no overdrive ;)

Even with 32" tall tires I am at 3800 rpm at 70 mph.

Overdrive is high on my priorities list but I drive mostly in the city and crawl around in the mud & snow so the gearing is great for what I do most.

glock35ipsc

09-17-2009 05:20 PM

Re: results from a rear end swap

Quote:

Originally Posted by glock35ipsc (Post 3523603)

4.11 = 2250rpm @ 65mph

Quote:

Originally Posted by 68 TT (Post 3523846)

With only 28" tires the 4.10's would be OK with the OD of the 700R4. I ran these in my Malibu with a T-350 and 28" tires and 60 mph was right at 3000 rpm. The 30% OD of the 700R4 would drop that to about 2000 rpm.

Pretty close.

spaseghost

09-17-2009 06:44 PM

Re: results from a rear end swap

Quote:

Originally Posted by nlped (Post 3522436)

If it is the stock rearend it is an 8.5" 10 bolt w/ 28 spline axles. I don't really know why this is relavent, but that's the answer to the previous post. ;)

i didnt want to search and i didnt want to be the a hole who asked. i thought it was a pretty clever way to find out!

shrtbx

09-18-2009 03:13 AM

Re: results from a rear end swap

Whatever works best for ya man lol.:smoke:

68 TT

09-18-2009 11:27 AM

Re: results from a rear end swap

The 88-up new body style trucks had 30-spline 8.5" 10-bolts but shared the same ring & pinion as the older cars & trucks with the 28-spline 8.5 so it is a nice upgrade if you are breaking the axles on the 8.5 rear end.

glock35ipsc

09-18-2009 11:38 AM

Re: results from a rear end swap

Plus they are wider, so they fill out the wheel well better and bring the front and rear track width closer. See nlped's build thread. He has an 89-98 rear in his truck.

All times are GMT -4. The time now is 01:30 PM.

Page 2 of 2

Show 40 post(s) from this thread on one page