Hey everyone, I successfully swapped the 5.7 into my boat and only thing left is the carb… I cant find any specs on the carb I have only possibly due to its age. Curious on if the carbs would be similar between a 1981 Merc. 5.7 and 1988 merc. 4.3 other than the 4.3 being 2 barrel and 5.7 being 4...
Also contacted Michigan motorz and they said all splines/couplers are the same for the drives! Looks like I should be good to go with a flywheel and new coupler for the 350. Thanks for the help everyone!
When pulling up specs for an alpha one gen 1 driveshaft it says “Fits 1972-1990 R, MR and Alpha one” which seems to me like it should be the same driveshaft and coupler splines.
$1000CAD with new manifolds/elbows, and electric ignition module/kit. Rebuilt in early 2000’s, 700 hours since rebuild, Which is a much better deal than any other motors near me.
Will the older style coupler still mate with my alpha shaft?
It’s an 18ft light boat , I was more leaning v8 because of the good deal it would have been. It includes the exhaust parts I need aswell. I will look into a vortec block aswell.
Thanks Lou!
Damn… my 4.3l is definitely 1 piece main seal as my bolts are Center on covers.
Huge bummer that it won’t work, thanks for catching that guys! Is there adapters for the couplers or anything to make the swap work or am I SOL?
I believe 88 but would have to double check when I’m home. He said came out of his 89 boat so just assumed it was an 89 motor. Big changes from 84 to 88/89?
Edit : I’m an idiot and mixed up ads I was looking at… it is indeed an 84.
What issues am I looking at here?
Going Wednesday to pick up that 350! Should be a fun boat when it’s all said and done. Still hoping to splash it this year. Has taken me a year and a half so far working weekends to restore this thing so getting antsy!
