FABbot Kit to bolt an LS engine to an AR5 5speed possible in a third gen?
04-05-2019, 01:04 PM
#1
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Car: 1989 IROC-Z
Engine: LS1
Transmission: T56
FABbot Kit to bolt an LS engine to an AR5 5speed possible in a third gen?
Looking to see if this path would be possible for an alternative to a T56? We all know T5’s are weak but apparently AR5’s can handle around 700 ft/lbs. I guess my question is to the transmission guys who are familiar with these transmissions is it physically possible to fit this transmission into a third gen?
https://www.fabbotfab.com/products/a...ission-adapter
https://www.fabbotfab.com/products/a...ission-adapter
04-05-2019, 07:08 PM
#2
Re: FABbot Kit to bolt an LS engine to an AR5 5speed possible in a third gen?
The non-GM versions of that trans. are not a problem size-wise, unless you count shifter area.
I like their use of the 4L60 bell as an interesting re-use.
As for the ratios of the Solstice box, no thanks.
I like their use of the 4L60 bell as an interesting re-use.
As for the ratios of the Solstice box, no thanks.
04-05-2019, 08:45 PM
#3
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Re: FABbot Kit to bolt an LS engine to an AR5 5speed possible in a third gen?
Are there different versions of the AR5 trans that have different torque ratings?
The AR-5 is a 5-speed manual transmissionmanufactured by Aisin. It is designed for longitudinal engine applications and can handle up to 260 ft·lbf (353 N·m) of torque based on existing applications. [1]
General Motors used the AR-5 as RPO MA5.
The AR-5 is a 5-speed manual transmissionmanufactured by Aisin. It is designed for longitudinal engine applications and can handle up to 260 ft·lbf (353 N·m) of torque based on existing applications. [1]
General Motors used the AR-5 as RPO MA5.
04-05-2019, 11:17 PM
#4
Re: FABbot Kit to bolt an LS engine to an AR5 5speed possible in a third gen?
OEM ratings and aftermarket ratings are different. You won't see an OEM TR6060 listed as 700lb-ft, but the T56 Magnum (a TR6060) is.
Their claim of the AR-5 being a 700lb-ft trans on the referenced site is a stretch. The bearing package is good, but the gearset just isn't as robust as a T56, let alone a TR6060.
Their claim of the AR-5 being a 700lb-ft trans on the referenced site is a stretch. The bearing package is good, but the gearset just isn't as robust as a T56, let alone a TR6060.
04-06-2019, 04:59 PM
#5
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Car: 92 Firebird
Engine: 4.8 LR4
Transmission: T56
Axle/Gears: 3.45 9 Bolt
Re: FABbot Kit to bolt an LS engine to an AR5 5speed possible in a third gen?
Definitely not a great transmission. On a cold day I couldn't get mine to go into 2nd gear in my Solstice
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