March 23, 2019, 01:02:32 PM

Author Topic: LT1 in an 85 GSL  (Read 22282 times)

Offline freeskier7791

LT1 in an 85 GSL
« on: February 03, 2014, 05:44:42 PM »
Figured I'd make a build thread since there seems to be a lack of FBs with LT1s here.

I bought the RX7 a few months ago.  I had never really built a car before and had always liked the FB body style.  A good deal was found on craigslist and I bought the car.



Got the rotary barely running and it was too slow.

I bought a T5 WC transmission and was going to go TBI Vortec 5.3 but got a good deal on an LT1 from a cop car from a friend.

This happened, got a storage unit to work on the car


Current state today, hopefully the rotary will be pulled this week.


Parts list
-LT1
-T5 WC
-Camaro Bellhousing
-What shifter??
-Walbro 255
-Center Dump Corvette Headers
-....

Please comment/heckle/criticise this is my first build

Offline gadzooks

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Re: LT1 in an 85 GSL
« Reply #1 on: February 03, 2014, 10:12:33 PM »
make sure you use a straight up style bellhousing,
flywheel for a 1990 IROC Z Camero, about 16# http://www.summitracing.com/parts/zzz-50-6527/overview/make/chevrolet
I have a cut down and straightened '86 Camaro shifter with the rubber isolator removed that you can have for shipping cost, or if you don't mind spending the money, I highly recommend the Pro 5.0 shifter
1987 Base/Light Weight with '95 Firebird LT1/T5

Offline freeskier7791

Re: LT1 in an 85 GSL
« Reply #2 on: February 03, 2014, 10:18:13 PM »
Thanks for the info, I would be interested in that shifter.  I wish I had seen that flywheel I got light weight one off ebay.  my friend has done this swap before and I found the cheap clutch kit I needed from Sachs.  Hopefully I can do more work tomorrow on it

Offline bikedad

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Re: LT1 in an 85 GSL
« Reply #3 on: February 04, 2014, 09:23:36 AM »
Night and day difference when I installed my Pro 5.0 shifter when I had the T5.
Don Teifke  :drive:
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"Life is tough.,, Life is even tougher if you're stupid."
-----John Wayne-----

Offline freeskier7791

Re: LT1 in an 85 GSL
« Reply #4 on: February 04, 2014, 09:41:34 AM »
Night and day difference when I installed my Pro 5.0 shifter when I had the T5.

Sounds like I should start browsing ebay and craislist

Offline gadzooks

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Re: LT1 in an 85 GSL
« Reply #5 on: February 04, 2014, 09:50:44 PM »
Night and day difference when I installed my Pro 5.0 shifter when I had the T5.

Sounds like I should start browsing ebay and craislist

Yup, it was a night and day difference when I installed bikedad's Pro 5.0 shifter!
1987 Base/Light Weight with '95 Firebird LT1/T5

Offline N2v8fcs

Re: LT1 in an 85 GSL
« Reply #6 on: February 04, 2014, 09:58:55 PM »
Nice solid looking car.
Welcome to the dark side :)
:drive:
new personal best 11.45 @ 120 mph N/A car...9.11 @152 mph for the turbo car.


1987 FC  355 SBC, T-5, T2 rear        retired 5-4-11
1991 FC  383 SBC, sold to Dad. Now 5.3 w 76mm turbo, G-force T-5, 8.8 Ronin rear 
1990 FC  370 CID 6.0 w 88mm turbo, Powerglide, Ronin 8.8 w 3.15 gears

Offline freeskier7791

Re: LT1 in an 85 GSL
« Reply #7 on: February 04, 2014, 11:18:32 PM »
Nice solid looking car.
Welcome to the dark side :)

Thanks, the body and interior are crazy clean for the age.  I'm glad this project escalated so quickly from a simple suspension upgrade

Offline Ericdsm

Re: LT1 in an 85 GSL
« Reply #8 on: February 06, 2014, 01:51:26 PM »
always cool to see another first gen.
Eric
84 Rx7 SBF- being brought back to life
91 GSX eclipse-DD

Offline freeskier7791

Re: LT1 in an 85 GSL
« Reply #9 on: February 06, 2014, 04:33:22 PM »
always cool to see another first gen.

Agreed, Yours looks good so far too

Offline freeskier7791

Re: LT1 in an 85 GSL
« Reply #10 on: February 20, 2014, 12:50:22 AM »
Made some progress, pulled the rotary, getting the LT1 in a few days and modifying the oil pan.  I will be sorting wiring in the mean time and finishing building my T5.




Offline freeskier7791

Re: LT1 in an 85 GSL
« Reply #11 on: April 17, 2014, 09:51:44 PM »
Life has taken over but I finally made some progress.  I was able to modify and weld my oil pan and have attached the clutch.  I need to find a new bellhousing or make an adapter though I have  a 94 camaro T5 with the ford bolt pattern and my current bellhousing has the old GM pattern.


Offline freeskier7791

Re: LT1 in an 85 GSL
« Reply #12 on: April 11, 2015, 08:11:55 AM »
Its been almost a year and I'm still working on the car.  The motor and trans are in and I sorted out the wiring, I need to make sure it starts and put on the accessory drive and radiator.  Then I can start making it look good



Offline freeskier7791

Re: LT1 in an 85 GSL
« Reply #13 on: December 14, 2015, 01:55:53 PM »
Mega update!


Got lots of things done, fabbing rear motor mounts and radiator mounts then I can start and drive it.












Offline freeskier7791

Re: LT1 in an 85 GSL
« Reply #14 on: February 10, 2016, 09:21:04 AM »
Much needed update. 
-Built radiator mount
-Built transmission mount
-Got driveshaft slipyoke replaced and driveshaft shortened
-Built radiator hoses
-Mounted powersteering reservoir
-Plumbed low pressure powersteering lines
-Cut the springs, I really need to buy coilover sleeves and springs
-Clutch MC mounted and plumbed to F-body slave


Got it started too!