Author Topic: Ride height post LS motor install  (Read 287 times)

stros

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Ride height post LS motor install
« on: March 17, 2019, 11:13:15 AM »
Hi - I have the PTFB GT Kit with Viking adjustable shocks on all 4 corners.  I haven't had a chance to see the car fully settled after the engine install but it looks likely to be too high - at least in the front.

What have you guys done suspension wise with your LS conversions?  Are you just cutting the front springs?  Any issues with the rear being any higher?  I would think not as the transmission (4L70E) is actually about 20 pounds heavier than the TH350.

Thanks
Darryl

'77 black TA Hardtop LS3 / 4L70E swap
Build thread:
http://transamcountry.com/community/index.php?topic=61066

FormTA

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Re: Ride height post LS motor install
« Reply #1 on: March 17, 2019, 12:48:14 PM »
Here's mine but there is a lot a weight that has to go in yet. GT rear leafs on the short hole of the shackle and hotkis 2" drop coils.
The tires on there are really small to. Just something to roll it around.


79 Trans am 301 (work in progress) LS swap n progress
79 Formula 301 (Work in progress)
67 RS Camaro (Work in progress)
See the recurring theme???

Old Chicken

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Re: Ride height post LS motor install
« Reply #2 on: March 17, 2019, 05:26:45 PM »
I used new front springs, the ones for the straight six cars, but it'll be a few weeks before I get the sheet metal back on to know for sure how it shakes out...

stros

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Re: Ride height post LS motor install
« Reply #3 on: March 17, 2019, 05:44:51 PM »
Thanks guys.  FYI I have Nitto NT555s in 255/45/17 front and 285/40/17s in the rear, which aren’t quite as tall as stock (accentuating the gap).
Darryl

'77 black TA Hardtop LS3 / 4L70E swap
Build thread:
http://transamcountry.com/community/index.php?topic=61066

scarebird

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Re: Ride height post LS motor install
« Reply #4 on: March 17, 2019, 05:46:37 PM »
Moroso drag springs (235#) with 3/4 loop cut off: 8" off ground in rear, 9" in front as measured to GM tech manual. 

Handling is excellent.

Re: Ride height post LS motor install
« Reply #4 on: March 17, 2019, 05:46:37 PM »

stros

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Re: Ride height post LS motor install
« Reply #5 on: March 17, 2019, 05:50:35 PM »
8" off ground in rear, 9" in front as measured to GM tech manual.

Thanks Scarebird.  Sorry I didn’t quite understand what you meant by the above portion of your statement. 
Darryl

'77 black TA Hardtop LS3 / 4L70E swap
Build thread:
http://transamcountry.com/community/index.php?topic=61066

scarebird

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Re: Ride height post LS motor install
« Reply #6 on: March 17, 2019, 10:11:00 PM »
I took the measurements from the same spots shown in the GM service manual.

I will find and post it if you cannot find it.

78TA_In87

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Re: Ride height post LS motor install
« Reply #7 on: March 19, 2019, 11:48:26 PM »
I got the below kit after swapping to an LS3 with the 4L65E.  I also have 285 40 17s all around.   It dropped quite a bit over time. I won't do any modifications until driving it for a while and some time,

70-81 Comp kit™  19 pos. adj. shocks                2CS-431              2CS-436          $1429.00
Torktrax leafs w/spherical bearing.
PONTIAC - We (Did) Build EXCITEMENT!!

Re: Ride height post LS motor install
« Reply #7 on: March 19, 2019, 11:48:26 PM »
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