HELP! Blown Outdrive, what will fit this?

[KCKracker]

I have a 470 engine and 470 alpha1 gen1 OD. how do i know what outdrives will fit it? i saw an ad for one alpha1 gen1 but the shop said it wouldnt fit because its off a V8 not a 4cyl. mine has 1.8 gears if that matters?

 

[Bondo]

Re: HELP! Blown Outdrive, what will fit this?

I have a 470 engine and 470 alpha1 gen1 OD. how do i know what outdrives will fit it? i saw an ad for one alpha1 gen1 but the shop said it wouldnt fit because its off a V8 not a 4cyl. mine has 1.8 gears if that matters?

Ayuh,... Ya need a pre-91 drive, with 1.84 gears...

 

[KCKracker]

Re: HELP! Blown Outdrive, what will fit this?

found one, but the shop said it wouldnt fit because its off a V8 not a 4cyl.

also, will a genII fit if mines a gen1?

 

[spdracr39]

Re: HELP! Blown Outdrive, what will fit this?

I don't think a gen II will fit without a bunch of extra parts. You could buy an SEI replacement drive for about 1300.00 with a three year warranty right here on iboats. I have used one and they work great.

 

[KCKracker]

Re: HELP! Blown Outdrive, what will fit this?

Ayuh,... Ya need a pre-91 drive, with 1.84 gears...

they look to be split by 1983 and 1991.. found one, but the shop said it wouldnt fit because its off a V8 not a 4cyl ?

 

[Bondo]

Re: HELP! Blown Outdrive, what will fit this?

they look to be split by 1983 and 1991.. found one, but the shop said it wouldnt fit because its off a V8 not a 4cyl ?

Ayuh,... Like I said,... a Pre-91 will fit.... in a 1.84 ratio...

V-8s use 1.50 gears...

The I-4 GMs use 1.98,... That won't work either...

 

[KCKracker]

Re: HELP! Blown Outdrive, what will fit this?

does the gear ratio matter if i swap the shaft for the right one?

 

[Silly Seville]

Re: HELP! Blown Outdrive, what will fit this?

does the gear ratio matter if i swap the shaft for the right one?

Kracker, not to be a horses rear end...but you need to pay attention to Bond-o. If you want to do this correctly, get either a pre 1991 drive in 1.84:1 ratio, or buy a complete new unit from Sterndrive Engineering (right here on iboats)

The expense of swapping gear sets from one drive to another will match or in some cases/places exceed the cost of a new upper from SEI.

Good luck!

 

[Silly Seville]

Re: HELP! Blown Outdrive, what will fit this?

will a gen II fit if mines a gen1?

NO! That's why Bond-0 specified a Pre-1991. That was the last year for Alpha 1's

 

[achris]

Re: HELP! Blown Outdrive, what will fit this?

:facepalm: .... All I can say is "Horses and water".....

 

[Eric 3.7LX Alpha 1]

Re: HELP! Blown Outdrive, what will fit this?

Here is a chart with engine drive combos, you can see what ratios went with what engines.

Basically you need one from another 470, or 4.3 V-6.

You can buy used if you want to, but I wouldn't online. Too much junk stuff being sold out there.

If you can get one from a person locally, and can guarantee it is good, and the price is good.

You can click on the pic 3-times to enlarge it.

BTW, that chart is from the Sticky at the top of the forum.

 

[KCKracker]

Re: HELP! Blown Outdrive, what will fit this?

i found a good one from a 4.3, but its a gen II, so will that fit since mine was a gen I ?

 

[Eric 3.7LX Alpha 1]

Re: HELP! Blown Outdrive, what will fit this?

i found a good one from a 4.3, but its a gen II, so will that fit since mine was a gen I ?

No... NOT interchangable, will not work.

 

[Scott Danforth]

Re: HELP! Blown Outdrive, what will fit this?

only one drive will work, see post #2 and post #6

you can swap to the V8 drive if you swap the engine and everything else as well.

 

[KCKracker]

Re: HELP! Blown Outdrive, what will fit this?

so is posts #11 wrong? it said also 4.3

 

[nola mike]

Re: HELP! Blown Outdrive, what will fit this?

yes, a 4.3 is also 1.84. not to add more confusion to this thread, but you can possibly up-prop a 1.98 ratio drive from a 3.0 L. That's what I'm currently running on mine.

 

[KCKracker]

Re: HELP! Blown Outdrive, what will fit this?

thats what i tried asking earlier is if the CV joint and shaft could just be changed, and prop to use a different model because mine doesnt seem to be available locally used, but tons of 1.98 ones.

also does 1.98R mean reverse rotation?

 

[nola mike]

Re: HELP! Blown Outdrive, what will fit this?

Changing the gear ratio involves changing the entire upper gear set. Which is difficult and prohibitively expensive.

 

[ktbarrentine]

Re: HELP! Blown Outdrive, what will fit this?

also does 1.98R mean reverse rotation?

1.98 "Ratio"

 

[KCKracker]

Re: HELP! Blown Outdrive, what will fit this?

http://seattle.craigslist.org/see/boa/3122226398.html

i think i just scored, can someone tell me if these serials are for gen1 or 2? this guy dont know