Around here you can't find newer chevies with a stick shift. They all have an auto behind them. I was hoping there would be something else I could find in a wreckers somewhere that would work. Time to visit the parts counter I guess.I would recommend using an 8.1L flywheel. You know the flywheel that was intended for that engine…….
Larry,Here is the 8.1L flywheel part number....... 12582964
Around here you can't find newer chevies with a stick shift. They all have an auto behind them. I was hoping there would be something else I could find in a wreckers somewhere that would work. Time to visit the parts counter I guess.
Now the question is will a standard 11" clutch for a SM465 bolt up to a stock 8.1 flywheel?
I've got my choice of a SM465 manual clutch or a factory hydraulic clutch bellhousing. I'll see if I can get a stock 8.1 flywheel and try bolting stuff together. If it works I'll report back. No idea how long it will take to get the 8.1 flywheel though.Same problem I was finding. I was also concerned about the clutch. I will know in a couple weeks, once I get started on this. I have the 8.1, with an auto flexplate, a SM 465 with bellhousing (mechanical clutch) a 203 mated to the 465, and a 32 spline 205 I am planning on mating to the 203. I just need to get the flywheel/clutch setup figured out.
Weren't the 454's externally balanced? Thats probably the difference.I found a picture of an 8.1L flywheel. It does look quite different from my 454HO flywheel in the center area.
I think the stock stuff is good enough for me. I'm going to rework the stock harness and use as much of the factory stuff as possible. Partly to keep costs down and partly to make diagnosing problems easier. I may get the ECM reflashed with a hotter setup but I'll wait until it's in and running (mostly because I want to see how much difference it makes). I'm also going to try and stick with the factory drive-by-wire setup.Aside from figuring out the clutch dealeo, what your all of your plans for wiring harnesses and ECM’s.
Any hp/torque specs from that combo? What are the perks besides easier to calibrate and install (not that those aren't reasons enough to use it).The hot ticket on an 8.1 is to use a marine manual throttle body so you can use a manual throttle cable, custom harness from Arizona Speed and Marine and run it on a MEFI-4 controller. A new MEFI-5 controller was introduced last year but I am not all that up to speed on benefits of that controller.
Maybe that's why I don't have MEFI.I forgot I saw that you work on boats. I am surprised your marine experience hasn’t sealed the deal for you to go with MEFI.
I don’t have any experience with any aftermarket tuning software for the MEFI but I did stumble across this company a while back. They also have a lot if helpful MEFI links on their page as well.
How much was the fine for the 8.1 flywheel?