Thread: 671 weiand blower length

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Does anyone have the length of a 671 supercharger to suit a SBC
Chasing the length from the back of the inlet manifold to the front of the pulley.
Want to take the Weiand 177 blower off and change it for a 671 but want to make sure it wont hit anything
Thanks
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Foreskin in or le natural measurement ? heck I don't really want to chop 4 "off it to measure the length for you mate...

Hi, I don't have a answer for you about the 6-71 but would like to know the same dimension you have for the 177. I would like to put one on my 40 but am a bit cramped between the radiator and pulleys. Does your 177 run a v belt drive or a ribbed belt drive? Thanks for your time. Ray

The center section of 6-71 is 15", add the front and rear covers about 17", i don't have a fully assembled one.
the 6-71 and 177 intake are different, the 6-71 won't mate.

Just look at your front dampner pulley---the 6:71 can be driven with a 2 inch belt if space is limited and adding the 2 inches to your dampner measurement would be the distance your looking for----

An 8:71 is about 3/4 inch longer---3/8 to the front and 3/8 to the rear--

thanks for the info

will unpack the blower on the weekend and measure it.
The dimensions on the Holley site are very good for the 177 blower but for some reason there not great with the 671.
Make sure you get the blower for the short water pump for more clearance.

I'd be interested in knowing why you want to change.

I had the 177 blower on a mild 350 chev but I am building a better 383 chev now with a dart block ,blower pistons ,full roller cam and lifters and rockers.
I have a forged crank and good rods etc etc.I want to run more boost with the new engine but I believe the smaller blower ( 177 ) will heat the engine up due to the speed to provide the boost and I don't want the engine overheating

Was your 177 for a short water pump? If so, I might be interested...

Yes it was a short water pump but I live in Perth Western Australia

Originally Posted by Scooting

Hi, I don't have a answer for you about the 6-71 but would like to know the same dimension you have for the 177. I would like to put one on my 40 but am a bit cramped between the radiator and pulleys. Does your 177 run a v belt drive or a ribbed belt drive? Thanks for your time. Ray

The length is 665mm from the back of the passenger side of the manifold to the front of the drive pulley ( Passenger side australian )

Not sure if you got your answer,but I just measured mine 6:71 SBC and with a 3" pulley setup I am looking at 27 1/2" -28"(700mm)Hard for me to get real accurate,but that is from inlet manifold at distributor to front of pulley.Hope this helps.

thanks for measuing the blower