1SLwLS1

iTrader: (6)

Picked this up tonight as a store in town had one in stock and in the Texas heat with the full load of AC and my right foot, the stock cooling system has been given a big challenge cooling the iron 408. I purchased that and the damn thing doesn't fit. Looks like the rest of them on the internet. I would have to grind down probably 1/16" from each side of the support arms.

Anyone dealt with these before? P/N 37960 Murray

1SLwLS1

iTrader: (6)

No one? I had them pull the stock Murray thermostat and it had the same size diaphragm supports. So it would not of fit either. I ended up returning this, but no one else has dealt with this?

DCC!!

iTrader: (8)

are you sure its for a ls1? for 408 in ur case it might be a gen 1 sbc or other makes most parts store dont carry a lot of parts for the ls series

1SLwLS1

iTrader: (6)

It is referenced from a 2002 Pontiac Firebird 5.7L...

I am using the stock water pump that came on the car...

SOMbitch

iTrader: (8)

Try Autozone. I got a German made one for $30 and running two years no probs....

1SLwLS1

iTrader: (6)

Figured out the problem, apparently its an LS2 pump, but still looks like an LS1 pump. Looks like some of the dealers started swapping these for standard style thermostats. If I am right, the stock thermostat should pop right our of the housing. I guess I will try that tonight.

1SLwLS1

iTrader: (6)

actually its a 2004 water pump from a GTO, same housing style as an LS1, but has the new removable thermostat.