LS6 smog hose

[450hp]

Was the cross over smog hose the same length for the early tube end outlet and the later tube in the middle on the drivers side. Thanks.

[Mr70]

No,2 different lengths.

[450hp]

Thanks, does anyone know the lenght? its proubly the same as the 1969 L78 hose.

[bbjohnny]

I have two 69 hoses, 3940937. One is 25 inches, one is 25.25 inches. I have one 70 style hose, 3947158 and it is 31 inches. Hope this helps.

[450hp]

Thanks for taking your time to measure your hoses, mine has the early tube, Jan. build which has the same tube at the end like a 69. The 25 and a fourth would be right, like the pictures of untouched cars. The 30 inche hose would be for the outlet in the center, around March build. Thanks. :biggthumpup:

[CamarosRus]

I have a 27" long 3949446 (very faint stamp) that has two "large" embossed ribs with a smaller rib beside each larger one (4 in total when seen thru a mag glass)....

Can this hose be converted into the "long" 69 smog hose ????

I need the 3947158 for my 70 L78 eng and apparently this wont be long enough

# and Length of 70 L78/LS6 short hose is ????????