Thunderbolt IV ignition module
 

My module stated it's a V8-22 module. I was offered a V8-20R module.....will this one work for my 260hp 350?

Thanks

somebody?
anybody?

should work fine just have to retime your motor V8-22 has 22 degrees of advance and the V8-20 has only 20 degrees of advance so your base timing is different.

I was thinking exactly the same way. Thanks for the response!!!

V8-22 Module has 22 Total Advance all in by 4500rpm.

V8-20R Module has 20 Total Advance all in by 5250 RPM.

Therefore, I would not recommend the V8-20R module. It's got a super slow azz curve.

This is according to my notes. Which I'm sharing to you for free. Thus, if I'm wrong, I owe you nothing. LOL.

Ok, thanks.

Looks like I need a V8-22module then!!

I might just have a pair......

Meeting a guy at the shop in a few minutes.....will let you know....

Last handful of pages on this Merc bulletin shows a lot of Merc's most used modules' curves/specs:

http://www.boatfix.com/merc/Techbk/95/95HGB4.PDF

How would your wife / girlfriend respond to that ? :lolhit::helmet:

Thanks commandersander!!