I am looking at strengthening up my transmission for my 87 IROC. It has a 700R4 in it and I was wondering if anyone had experience with purchasing an built kit from any specific company. I am looking at Monster transmission currently. They have a kit that is 479$ with free shipping. This kit is rated at 500 hp and 450 lb-ft torque. My engine was rated around 491 hp at the crank i think and I am pretty sure my torque is at least that. I am on the edge of where they rated it at but Im sure I will be alright.

Anyone had any experience with monster transmissions or any input on another comparable company?? Please let me know!

700R4 Mega Monster Transmission Complete Rebuild Kit: 1987-93

 

I used Pro-built http://www.700r4l60e.com/store/home.php?cat=19 and rebuild 3 transmission with great results.

Here is my 700r4 RR rebuild tread https://www.thirdgen.org/forums/tran...build-pro.html, to give you an idea.

 

Yeah I looked at them too. Just are a couple hundred dollars more for a kit. I know you get what you pay for but haven't heard anything bad about monster transmission and I don't really beat on my car so I figured it might be a safe bet

 

There is a little price difference, at first sight it appears Pro Built includes the bearings, best is to compare the parts list http://www.700r4l60e.com/store/produ...&cat=19&page=1

 

I custom build all of my kits to match what you have and how you drive. It includes the latest upgrades that work, free video, setup the 3-4 clutch pack, modified accumulators, pre-drilled and modified separator plate, modified Shift kit instructions, etc. And you can always call for additional help. Monster does none of these from what customers have told me who have bought their kits. If you want a tailored rebuild kit, then I am the only one that offers them as far as I know.

 

Alright would you like to offer me a quote then? I have a 350 ZZ4 Engine, Fuel Injected. This engine was spec'd at 491 hp/ 461 TQ carberated. But I have fuel injection and have no idea where mine stands. I'm sure still somewhere in that range. For transmission purposes it would be better to assume a little more. This is just a weekend cruiser and I would like to take it to the track every once in a while. (I haven't yet because I still have a stock trans) Performance/drive-ability is desired. I would love something to scream through the gears but but decent to drive. I will be purchasing a 3000 stall converter to go along with it. And I also need something that can handle my 4.10 rear end. I will be honest and I do like the idea of the 5 pinion planetary that monster offers. If you could help me out that would be great. I am looking to make the purchase this week as I am tearing the trans out Wednesday. So the sooner the better. Plus you'd take business from Monster and if it helps I will have another car I am working on and you would get that business too along with all the others I own in the future. Let me know if you need anymore information. Thanks

 

Brando, where in IL are you located?

Another vote for Pro built.

 

Sycamore , IL

 

Depending on how you drive, the Street/Strip or the Pro Street will be the ones to pick from. The torque converter stall ahould be 2,800rpm - 3,200rpm range from what you are telling me what is done here. I have the Edge $545.00 w/2 year warranty or the Vigilante $799.00 w/5 year warranty 9.5" lockup TC's. 4 pinion planets have worked well for many years without failures. I have them in many nine, ten, & eleven second vehicles doing fine. The 5 pinion planets were a bottom line move from GM, and were introduced as a cost cutting measure. If you ask around, you will see that the 4 pinion planetaries were never a problem. Unless someone has given you a set, I would not waste my money on them. The 700R4 Rebuild Kit Street/Strip with a pre-drilled separator plate goes for $701.99 (https://www.700r4l60e.com/store/prod...&cat=19&page=1) and the 700R4 Rebuild Kit Pro Street goes for $760.85 (https://www.700r4l60e.com/store/prod...&cat=19&page=1)

 

Thank you for a timely response, I will take a look at these two and make my decision from there. I will probably end up calling to talk to someone too to get a better idea of which one is better for me.

 

I'm not a professional with all these trans specs and such and it can be a bit overwhelming. I know how to build them but don't fully understand them. Could you explain a bit on what each of these two kits support as far as a driving style. I guess what would I notice about one vs. the other? If you could give me a run down that would be excellent. I appreciate the help.

 

Ordered my build kit for Pro Built Automatics! I am hoping I will see if soon so I can start building her up. Ripped the transmission out last night. Dana from Pro Built has been a huge help. Thanks for recommending him. Here are a few photos for tear out to hold you over.