belt # for 3800 swap (Page 1/2)
Lou6t4gto DEC 26, 06:14 PM
need a belt number for a 3800sc using fiero Rog Lower Alt. thanks
Spoon DEC 26, 07:24 PM

quote
Originally posted by Lou6t4gto:

need a belt number for a 3800sc using fiero Rog Lower Alt. thanks



What size pulley on the supercharger?

Spoon

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"Kilgore Trout once wrote a short story which was a dialogue between two pieces of yeast. They were discussing the possible purposes of life as they ate sugar and suffocated in their own excrement. Because of their limited intelligence, they never came close to guessing that they were making champagne." - Kurt Vonnegut

Lou6t4gto DEC 26, 11:09 PM
stock, I guess 4" ?
olejoedad DEC 26, 11:21 PM
Alternator and supercharger are not on the same belt......
Lou6t4gto DEC 26, 11:42 PM
need to know the belt for the alt / waterpump / ac, not the sc
Frenchrafe DEC 27, 02:44 AM
Run a piece of string around the belt route and mesure it in mm.
You then order the belt with the closest number to your mesured length.
Ex: 6PK 1330

"1330" is the length in mm of my alternator/waterpump belt.

Hope this helps.

Rafe

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'87 Fiero GT. 3800 turbo. Sticky tyres. Driven hard!

Lou6t4gto DEC 27, 11:03 PM
80 " ? anyone got A bELT ROUTING PIC FOR 3800sc W/ ac AND LOWER aLT ?? THANKS
yamaha94 DEC 28, 12:50 AM
Lou, type in on youtube "lost not forgotton" Mark clay has all the info you need. Part numbers, and belt routing. That is how i learned. Let me know if you find it its a great video!

here... saved you some time

https://www.youtube.com/watch?v=mmfWbG37Bys&t=638s

https://www.youtube.com/wat...=rx_Redau6dw&t=1058s

enjoy

[This message has been edited by yamaha94 (edited 12-28-2019).]

Dennis LaGrua DEC 28, 10:21 AM
Due to the different alternator mountings and supercharger pulley sizes that can be used, there is no standard size for 3800SC alternator/water pump swap belts. My swap using the 99 Astro Alternator ( with my low mounting) uses a 4060795 belt. That would be 79.5" but this cannot be recommended as a universal size.

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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

Lou6t4gto DEC 28, 01:26 PM
thanks