• PlowSite Homepage Upgrade

    Hello again PlowSite community,

    I wanted to post a quick note to let you know that the homepage of PlowSite will experience a major upgrade next week. We’re always looking for ways to improve our users’ experience on the site, and felt that this upgrade was needed and long overdue.

    With this upgrade, you’ll now see the top trending posts as soon as you visit PlowSite, and these will be updated throughout the day. You can also easily access videos and photos. As always, we encourage you to include videos and photos in your own posts to share with your fellow PlowSite users.

    Be assured that all of the forums, content and data that you’ve been accustomed to will remain intact, as will all current site features. You’ll also be able to easily access the full list of forums directly from our new homepage.

    We’re excited to bring you this change, and look forward to hearing your feedback.

    Thanks, PlowSite Team

HD Alternators


Where can you find HD alternators needed for the plow/lights etc? Or can you use a stock alternator with dual batteries?


Michael F

Senior Member
Rochester, NY
I have alway used stock alternators until the one on the truck fails, then replaced with the largest one available, Last year I replaced one for an 85 K20 there were 2 avaialable I believe a 70 amp & an 98 amp, put the 98 amp in, this was from Pepboys I believe, I know there is a place in town where I could have had it rebuilt or the could have made it put out more amps. Never had a need, I run plow, highlighter bar & headlights. My new truck 99 order with plow prep only has a 110 amp, that has computer ect to run.

John DiMartino

PlowSite.com Veteran
On GM's from 91 to 94 and even on some 88-90's the factory 100 amp alts burn up the rear bearing,this is a common problem.The police cars(caprice) from 91-93 use a 140 amp high output alt that has a huge case and is a great design.To retro-fit one to the small block or 4.3 V6 takes the drivers side accesory bracket from a Caprice police car(about $50 new and the alternator.The alt can also come from the 94-97 B or F body GM's,these are camaro/caprice with LT1 engines.When my salvage yard gets an Alternator,its mine for $85,which I feel is a bargain considering its output.I am running dual batterys on both my F/S plow trucks now,it really helps keep the voltage from spiking down under 10 volts when raising and angling.If I could fit them,Id have 2 on the S10 also.