Au 351

[jamieh]

Hi all, Has anyone heard of any AU falcons being converted to 351. I know there is plenty of 347 strokers out there these days. But why hasn't anyone done a 351. I'm wondering if it can be done.

[BZINGA]

Originally Posted by jamieh

Hi all, Has anyone heard of any AU falcons being converted to 351.

Nope...

[Powdered Toast Man]

A 351 windsor is a different engine to a 302 windsor. They're not like the clevelands with the 302 being a de-stroked 351. A 302 windsor safely strokes to 347.

So to fit an AU with a 351 cleveland would mean a whole aftermarket fuel injection system. And then getting it engineered. And thats if it fits in the engine bay.

Alternatively you would have to fit a late model injected 351 windsor, which you would then have to get engineered. And then it wont make any more power than a 347 anyway.

[Whoosha]

Originally Posted by Powdered Toast Man

A 351 windsor is a different engine to a 302 windsor. They're not like the clevelands with the 302 being a de-stroked 351. A 302 windsor safely strokes to 347.

So to fit an AU with a 351 cleveland would mean a whole aftermarket fuel injection system. And then getting it engineered. And thats if it fits in the engine bay.

Alternatively you would have to fit a late model injected 351 windsor, which you would then have to get engineered. And then it wont make any more power than a 347 anyway.

A late model Windsor is a different deck height to the old school windsor hence why the dont stroke to 351 I think thre a 3 different heights on stroker crate motors from memory ..

[Perana]

Originally Posted by Powdered Toast Man

A 351 windsor is a different engine to a 302 windsor. They're not like the clevelands with the 302 being a de-stroked 351. A 302 windsor safely strokes to 347.

So to fit an AU with a 351 cleveland would mean a whole aftermarket fuel injection system. And then getting it engineered. And thats if it fits in the engine bay.

Alternatively you would have to fit a late model injected 351 windsor, which you would then have to get engineered. And then it wont make any more power than a 347 anyway.

Thats until you bore/stroke the 351 out further ;)

302W deck: 8.206"
351W deck: 9.503"
302/351C = 9.2"

There is at least one AU that I have heard of with a 351 in it. IIRC it was an aftermarket alloy block at about 7L capacity.

The Yellow Arrow Coupe from a while back also had a 351w based engine in it.

There is a guy on the forums here who fitted one to an ED too, can't find the thread atm though.

[DoreSlamR]

I think this fella did sometime ago: SledgeHammer

Not sure what type of 351 he put in, but it can be done!

[gregaust]

Originally Posted by DoreSlamR

I think this fella did sometime ago: SledgeHammer

Not sure what type of 351 he put in, but it can be done!

Yes that AU is a 351 windsor block and alloy heads and makes plenty power ....

[Powdered Toast Man]

Originally Posted by Perana XR8

Thats until you bore/stroke the 351 out further ;)

Yeah, well, umm yeah... Wasn't thinking of making the 351 bigger :dr_Evil:
I meant a stock 351W

My whole point was a 347 stroker of the 302W is the easiest and cheapest option for more capacity in an AU, well thats what I would think anyway. But anything is possible I guess.

Originally Posted by Whoosha

A late model Windsor is a different deck height to the old school windsor hence why the dont stroke to 351 I think thre a 3 different heights on stroker crate motors from memory ..

But it's still not as simple as stroking a 302C though (is it?). I thought the 302W and 351W were still different blocks or something, whether it's the old school versions or the late model versions?

Sorry, I'm really no expert lol. I never looked into stroking any of the 302s I've owned (2 clevelands and a late model windsor) and I'm happy with my current 330 cube 3 valver at it's standard capacity :

[LUXO_8]

^351 windsor.
you can get factory 351w lower manifolds from the F150 lightning to accept the AU GT40P upper, thus keeping injection and almost factory appearance

you wouldnt do a cleveland unless it was a drag/burnout weapon destined to never be registered.

the guy with the ED's username was ScoopED im pretty sure

[RG]

Originally Posted by LUXO_8

^351 windsor.
you can get factory 351w lower manifolds from the F150 lightning to accept the AU GT40P upper, thus keeping injection and almost factory appearance

you wouldnt do a cleveland unless it was a drag/burnout weapon destined to never be registered.

the guy with the ED's username was ScoopED im pretty sure

That would be Explorer upper, GT40P are the heads the AU used. GT40 upper is what I use.

[LUXO_8]

Originally Posted by Russell

That would be Explorer upper, GT40P are the heads the AU used. GT40 upper is what I use.

i knew that...my bad:togo: , i did mean to say explorer upper.... (although there is a GT40 manifold, its the tubular one)

can i get my above post corrected?

[jamieh]

Thanks guys, Time to get the tape measure out. I'm also wondering how much power can the btr 4 speed auto handle? Am I better off converting to manual? IE: Tremec?

[Whoosha]

Originally Posted by jamieh

Thanks guys, Time to get the tape measure out. I'm also wondering how much power can the btr 4 speed auto handle? Am I better off converting to manual? IE: Tremec?

: 383 windsor crate motor with a high series bonett :

[AU1XLS]

Originally Posted by Whoosha

: 383 windsor crate motor with a high series bonett :

Whoosha the woosie, How about a World 460Cu based on a 351w deck height.
You can use a low series bonnet with the BA buldge

[RG]

Originally Posted by AU1XLS

Whoosha the woosie, How about a World 460Cu based on a 351w deck height.
You can use a low series bonnet with the BA buldge

Trying to tell us something there Gaz?

[Abacus]

A few AU 351Ws of them have been done. Sledgehammer's was about the first. They're basically torque monsters rather than outright powerhouses. Totally different characteristics to a Clevo.

IIRC they have to be engineered, whereas you can drop in a 347 kit and nobody needs be the wiser, except you and your insurance company.