Got BBK underdrive pulleys this morning

Slow5.0

Active Member
Feb 13, 2003
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46
Portland, OR
This morning I got from Summitracing BBK polished aluminum underdrive pulleys #1554
Today on on job on launch I was tryin installed in 30 min BUT everything was good except belt, like you guys know long time ago I take smog and a/c accesories out so I was running short belt 820K6 but this belt didn't work with BBK pulleys , little too long , after job I make trip to autozone and advance parts and bought about 10 different size of belts , and I find out that blet 812K6 was perfect
Thank you all guys on help to make good choice of many underdrive pulleys
Like you guys know I like take pics of any project I doing , thats because meybe that gonna help somebody else one day , or I have provement to I did that and I have too many pics on komp and CDs
Here is some pics

Stock_setup.webp

BBK_pulleys.webp

Crank_stock_vs_BBK.webp

Water_pump_stock_vs_BBK.webp

Alternator_stock_vs_BBK.webp

BBK_Underdrive_setup.webp
 

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  • Stock_setup.webp
    Stock_setup.webp
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  • BBK_pulleys.webp
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  • Crank_stock_vs_BBK.webp
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  • Water_pump_stock_vs_BBK.webp
    Water_pump_stock_vs_BBK.webp
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  • Alternator_stock_vs_BBK.webp
    Alternator_stock_vs_BBK.webp
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  • BBK_Underdrive_setup.webp
    BBK_Underdrive_setup.webp
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Shine your aluminum up with fine grit sandpaper start at 180 -220 then 300-400 grit then 600-800 grit, takes time but aluminum can look fantastic polished. Get some good polish at the end.

Nice pullies btw and you are a good man for posting pics and helpful hints. :nice: :hail2:
 
First of all Thank you

I bought polished BBK pullyes from summit #1554
http://store.summitracing.com/partdetail.asp?part=BBK-1554&N=120 4294925232 4294923360 302608
Pullyes don't come with new bolts ,you have to reuse stock one, alternator pully don't needed any shim, everything fit 100% except belt, you need shorter belt , I don't have smog pump and A/C and I with that setup I runing 820K6 belt,with BBK pullyes Inow I runing 812K6 belt
Charging is good , only on idle 900-1200 voltake drop from M to R but when I reached 1200rpms voltage comes back to M