[RedDirtRoad]

Does anyone have a source for the NOS style reproduction belts for 78 Trans Ams?
They make them for the older Pontiac’s but I guess 1978 is too new. Haha!
Looking for
Fan belt Code GL 9439754
Alt belt Code BY 9433646

[Aus78Formula]

And they'd have to make 50 different versions based on the options, more a 'classic appearance' range.

[Green Hornet]

for 78 Trans am....with Pontiac V8.........there are 5 different belts....and most if not all....are shared with other GM car and engine combinations..

[nUcLeArEnVoY]

I believe the original belts had exposed cogs on the outside. Closest match is the Dayco top-cog series. Don't forget to get a slightly wider belt for the power steering pulley. Most retailers sell the PS/fan and alternator/fan belts at the same width (15/32"), when the PS belt should be 17/32".

P/N recommendations:

Alt/Fan Belt: DAYCO 15485
PS/Fan Belt: DAYCO 17495

[Green Hornet]

Originally Posted by nUcLeArEnVoY

I believe the original belts had exposed cogs on the outside. Closest match is the Dayco top-cog series. Don't forget to get a slightly wider belt for the power steering pulley. Most retailers sell the PS/fan and alternator/fan belts at the same width (15/32"), when the PS belt should be 17/32".

P/N recommendations:

Alt/Fan Belt: DAYCO 15485
PS/Fan Belt: DAYCO 17495

NO cogs on ANY gm V8 belts in that era.....

[nUcLeArEnVoY]

Ahh, okay.