2.9 to 3.5 stroker

[slow29]

i just found a site that has a stroker kit for the 2.9 i was wondering yall's input on the subject its all forged and ported, polished studded and all the happy junk after that for a 2500 price just for the kit not including studs and heads thanks for the input... the site is http://www.moranav6racing.com/category.html?CategoryID=38

 

[TRH]

I hate to be that guy, but...get a 4.0l. I don't think futzing around with a 2.9l is ever going to get you much more power, especially for the cost/benefit ratio, but it's pretty readily accessible with a 4.0l.

[edit] Morana also sells a 4.3l stroker kit and a good number of other 4.0l parts that are worth looking at, fyi.

 

[slow29]

im really not worried about costs i want to be different, the 4.0 is a common swap, i want a turbo to go on the 2.9 later and that is the reason for the stroker kit because of the forged internals.

 

[maddawg87]

let me know if you decide to go through with it, becuase ive been thinking of using the same kit. and a 4.0 only has like 20 more horsepower then a 2.9 and the stroker kit would put the 2.9 at about 190? and you wouldnt have to deal with working out the bugs of swapping. i think it will be my next upgrade this coming summer.

 

[AllanD]

let me know if you decide to go through with it, becuase ive been thinking of using the same kit. and a 4.0 only has like 20 more horsepower then a 2.9 and the stroker kit would put the 2.9 at about 190? and you wouldnt have to deal with working out the bugs of swapping. i think it will be my next upgrade this coming summer.

a stroker 2.9 making 190hp?

PLEASE don't repeat dillusions based on "second hand smoke" from the CRACK pipe that the people selling these things have obviously been smoking.

a a stroked 2.9 turned into 3.5 isn't going to be revvier than
a 2.9 or even a 4.0. (it takes rpm to make power)
And it isn't going to be making more torque than a 4.0.

If you drove a 4.0 truck essentially identical to yours with a 4.0 you'd understand what the more experienced guys have already discovered...

That the inexperienced talk about horsepower, the rest of us talk about torque.

Yeah the 4.0 only makes 20-25 additional horsepower., but it makes an additional 55ft/lb of torque. that's 1/3 more FORCE turning the transmission input shaft.

Not only that the 4.0 is already making 194ft/lb of torque at 1000rpm.
and >200ft/lb all the way to the 4200rpm power peak.

The 4.0 does effortlessly what the 2.9 struggles to do even if you
tickle it right...

Torque is what makes the wheels go round, Horsepower only
determines how fast.

It's simple physics.

BTW, for the price of a $2500 stroker kit I can BUY more than one complete running 4.0 powered rangers.

For the price of the Morena stroker for a 4.0 I could build
a really killer stroker 302 starting with a NEW block.

You wanna be different? Smear your body with feces, stick a peacock feather up your butt and run down the street naked screaming "I'm a peacock ain't I beautiful" while jerking off.
that'll make you "different"

Different ain't "Better".



AD

 

[Downey]

^^^ agree

 

[Dusty_Ranger]

if ur not worried bout money do the stroker ill be a fan ive had to many plans shot down to side with the rest of these guys i say go for it

 

[holyford86]

a stroker 2.9 making 190hp?

PLEASE don't repeat dillusions based on "second hand smoke" from the CRACK pipe that the people selling these things have obviously been smoking.

a a stroked 2.9 turned into 3.5 isn't going to be revvier than
a 2.9 or even a 4.0. (it takes rpm to make power)
And it isn't going to be making more torque than a 4.0.

If you drove a 4.0 truck essentially identical to yours with a 4.0 you'd understand what the more experienced guys have already discovered...

That the inexperienced talk about horsepower, the rest of us talk about torque.

Yeah the 4.0 only makes 20-25 additional horsepower., but it makes an additional 55ft/lb of torque. that's 1/3 more FORCE turning the transmission input shaft.

Not only that the 4.0 is already making 194ft/lb of torque at 1000rpm.
and >200ft/lb all the way to the 4200rpm power peak.

The 4.0 does effortlessly what the 2.9 struggles to do even if you
tickle it right...

Torque is what makes the wheels go round, Horsepower only
determines how fast.

It's simple physics.

BTW, for the price of a $2500 stroker kit I can BUY more than one complete running 4.0 powered rangers.

For the price of the Morena stroker for a 4.0 I could build
a really killer stroker 302 starting with a NEW block.

You wanna be different? Smear your body with feces, stick a peacock feather up your butt and run down the street naked screaming "I'm a peacock ain't I beautiful" while jerking off.
that'll make you "different"

Different ain't "Better".



AD

not to mention the fact that it will take some time and patients to make it run right, You would need to convert to MAF to having even a hope in hell of the engine running close to well. If you swap in a 4.0 you only have to worry about some wiring right off the bat, and if you wire it right it will run well as soon as you hit the key, no messing around required, if you have a 90-92 with a 2.9 the swap is a drop in plug in, essentially. Up here you could buy 3 or 4 nice running but rotted out 4.0 rangers for $2500.

 

[AllanD]

Correct, the 4.0 properly swapped in is something you KNOW can run right.

And if it doesn't run right diagnosing what isn't "right" is an established process.

Witha stroker sucking more air through those small ports, etc...

And a stroker does NOTHING about the underlaying flaws that
the 2.9 is known for. (oiling system issues)

By comparison the 4.0 stoker actually makes more sense, even
at the higher price...

But like I said before if someone GAVE me $4500 to stroke my 4.0,
I'd build a stroker alright... I'd build a steel crank, Forged Piston,
H-beam rod Aluminum head roller cam 347 CID stroked 302.
and I think I could build it into an aluminum block.

OR I could build a relatively "normal" 351C-2V into an aluminum Aussie Block
with aluminum heads and wind up with something far more... evil...
than a stroked out V6.

OR track down one of the Paxton or Magnacharger blower kits and blow
the doors off whatever stroker someone can build.

what would I do with the OTHER $3800? Well half a dozen spare 4.0's
for when I blew them up running them under a blower.
Half a dozen spare transmissions would probably be a
good idea too...

Oh, and an AAA membership so it would be easier to get towed home
when I blew something up.

Absurd? Yes, but only to illustrate the point that the cost of the stroker
is several times as absurd.

I think anyone who would buy the stroker kit is Nucking Futs!

AD

 

[Dusty_Ranger]

if your hearts set on it do it

 

[volrath]

not to be a dick but im sure the mighty 2.9 is rated at 175 ft/lb of torque. 194 - 175 = 19. not 55

i do agree the 4.0 swap would be better and more cost effinciant. but as far as the oiling problems go i have seen plenty of older 4.0's with worn lifters as well. clattering old 4.0 sounds worse then my 2.9.

as for the 2.9 heads with small ports, haven't people put them on 4.0s for higher compression. witgh porting the seamed to do ok for them.

as far as the crank goes from morana it is basicly a 4.0 crank. they share the same bearings andthe gen 1 4.0s had same bolt pattern for the flywheel. the trick to do would be just to find the rignt rods then. "in theory"
~mitch

 

[Psychopete]

I think he was just saying that the 4.0L already makes 194ft. lbs of torque at a low 1,000 RPM. I think I've read it's peak torque is at 225ft. lbs. At what RPM? - not too sure.

Pete

 

[volrath]

yeah that makes more sence now. i stand corrected. good point pete

 

[fordman4488]

This is my opinion, why do a 3.5 when a 4.0 swap would be better and cheaper.

Ok, I agree, it is different. So if you want different, swap in a 302, oh wait, that is becoming very common also. I hear the same thing all the time on the
f series forums," get rid of your 302 and put in a real engine, a 351", why, so I can just have a different stock variation. And yes, i know that the power difference between the 2.9 and 4.0, and 5.0 and 5.8 is way different(302 and 351 stock make almost identical power ratings, at almost the same rpm, stock torque in 96 is the same and 302 is only 200 rpm higher peak. So if you want to do something really different, and get real power, why not swap in a 390, or a 428 cobra jet, Or a 429, or a 460. Go big block, yes i know it has been done before, but would be alot rarer than a small block conversion or a 4.0, and how long are they going to make the stroker parts for the 2.9 before they realize no one buys them and quit making them, and then when you need parts, your screwed.

But all this aside, if you are looking for more power for cheap and reliability, and basic swap in, just do a 4.0, and like everyone has said here, you can make all the horsepower you want and it wouldn't do you a bit of good without torque at the right rpm range.

 

[keifer1122]

funny i thought this was the 2.9 section not the 4.0 fan club gtfoutta here and go post how you are goin to put a 4.0 in the 4.0 forums.this forum is for 2.9 guys. id say go do the stroker then go to the dyno and lets see the results.

funny they tell u dont do it but these guys put in the shittier 4.0 why didnt they take a 4.0 I6 out of a jeep. then they ridicule u.