Need help-306 or 331 for a daily driver

Piston · Jul 2, 2004

331 is my vote. 331 in theory should last longer then a 347. The force of the pistons on the cylinder walls isn't as great in a 331. It's true 347's have come a long way but I would presonaly go with the 331 and that's what I did do with mine.

Auto Reverse · Jul 2, 2004

I love my DSS 331 Stroker. Lot's of torque. Right now I have a mild tune on it and I'm getting 325 RWHP. Now that I have about 2000 miles on the car I'm looking to do a more agressive tune, hopefully to get around 350 RWHP.

I've been told a well built stroker motor should last just as long, if not longer, than a stock short block. Provided proper care and maintenance is performed.

Go for the DSS 331. You won't be sorry you did.

Chris6050 · Jul 2, 2004

Ok thanks for all the replies guys. Looks like I'm going to go with the 331 from D.S.S. I realize most people would say go with the bigger cubes, but I just wanted to make sure the engine would last just as long as a 306 if properly taken care of. I'm a college student so who knows when I'll have this much money saved up again to put into my car.

saleenx029 · Jul 2, 2004

custom89stang said:
yeah but then thers gas mileage and if u've got a heavy foot, etc etc. more power isn't always the best thing

Did you really just say that? Am I still on a mustang forum.... umm yeah....ok am I still on planet earth.... umm I think. Ok now someone REALLY tell me why more power isn't always the best again... haha, ok I'm going back out to the garage to finish my quad turbo 509 ci with nitrous now before I get addicted to this "too much horsepower" disease and I will let ya'll figure this all out....

DirtyD916 · Jul 2, 2004

saleenx029 said:
Did you really just say that? Am I still on a mustang forum.... umm yeah....ok am I still on planet earth.... umm I think. Ok now someone REALLY tell me why more power isn't always the best again... haha, ok I'm going back out to the garage to finish my quad turbo 509 ci with nitrous now before I get addicted to this "too much horsepower" disease and I will let ya'll figure this all out....

cannot go wrong with 25 more cubes and an ass load of more power

FLA5.0 · Jul 2, 2004

I guess I'm confused, but isn't a 306 merely a 302 bored .030? So basically we're comparing a rebuilt 5.0 to one that has been stroked and bored to produce more torque and horses? Kind of like comparing apples to oranges aint it? That's just me.

90Notch · Jul 2, 2004

"How many of you guys actually have a 331 or 347 stroker for a daily driver? "

331ci in my daily driver through the streets of Boston, burned zero oil and held up longer than the 306 it replaced.

shorty1993 · Jul 3, 2004

FLA5.0 said:
I guess I'm confused, but isn't a 306 merely a 302 bored .030? So basically we're comparing a rebuilt 5.0 to one that has been stroked and bored to produce more torque and horses? Kind of like comparing apples to oranges aint it? That's just me.

yeah, you are still gaining a few cubic inches just not anything dramatic. i guess for a person that has a killer 302 setup, 306 would be better to keep from replacing alot of other parts associated with gaining that many cubes.

i think?????????????

Ranchero5.0 · Jul 3, 2004

With the parts you list I'd go with a 306. A 331 will need a notch more flow from the supporting staff to make power and torque. Screw Holley, I'd run a set of AFR 185's and a decent upper level long runner intake.

If you are going to do it, do it right.

JAmie

shorty1993 · Jul 3, 2004

Ranchero5.0 said:
With the parts you list I'd go with a 306. A 331 will need a notch more flow from the supporting staff to make power and torque. Screw Holley, I'd run a set of AFR 185's and a decent upper level long runner intake.

If you are going to do it, do it right.

JAmie

that is sort of what i was getting at.
yeah i hear the Holley heads are not that great. afr is the bomb. i will probably put mine back 302 as much as i would like to go bigger, just got alot of dependable use out of it not to go back. i have seen them beat on a daily basis and still run almost 200k before they need a rebuild. hard to beat that.

_jb_ · Jul 3, 2004

Yeah if I get enough money, which I mostly likly will due to a little "extra money" from a student loan, I will turn my 302 into a 331. But usually my plans don't really go to well, so maybe a 306 and at the least a new 302. I have to pull the engine out anyways because I have a leaking rear main seal, so I might as well clean up the engine bay and engine.

All I can say is that I have heard good things about the 331.

Js90Lx · Jul 3, 2004

Yeah those parts you listed are definitley not for the 331. Need bigger heads, intake, and a better cam. Those parts would work well on a 306.

shorty1993 · Jul 3, 2004

my only thing is 93 did not come with forged pistons and would want them, since i have plans to spray or get blown later and feel that they would be in my best interest. i do think the most i personally would go is 306. the word "STROKER" just has that punch to it though.

bln92cpe · Jul 3, 2004

I came to the same determing problem.. I bought a tired 92 LX SSP with a Vortech S trim pushing 8lbs of boost. I was going to get a 347 but with the blower I was told I would have to get bigger brakes and etc.etc. I opted for Coast High Performance 306 and am getting an aftercooler for the huffer and I tell ya this thing is SICK. Its totally well behaved in traffic but when I drop the hammer it wants to eat up corvettes and sounds wicked nasty. Oops i shouldn't be dropping the hammer yet because I am still breaking it in. Nothing wrong with a blown 306 and you can always add more boost.

cardudeusa · Jul 3, 2004

bln92cpe said:
I came to the same determing problem.. I bought a tired 92 LX SSP with a Vortech S trim pushing 8lbs of boost. I was going to get a 347 but with the blower I was told I would have to get bigger brakes and etc.etc. I opted for Coast High Performance 306 and am getting an aftercooler for the huffer and I tell ya this thing is SICK. Its totally well behaved in traffic but when I drop the hammer it wants to eat up corvettes and sounds wicked nasty. Oops i shouldn't be dropping the hammer yet because I am still breaking it in. Nothing wrong with a blown 306 and you can always add more boost.

Whats wrong with needing bigger breaks? Just means you have more power.

Ranchero5.0 · Jul 3, 2004

The build difference between a 302 and 331 is usually around $1000 and that kept me 306, plus I could peice the rebuild together (bore and pistons one year, rod recon + rings another and finally cam + heads) the third year. It took that many christmas vacations to get the money saved up and the work done. Even with only a 5psi blower on my combo it's eaten anything that's wanted to play so far and is almost scary for getting attention be it kid with thumbs up in town to truckers on the interstate. Oddly enough the cops haven't bothered me in a long time (knock on wood cause I like zero points)

Jamie

Grn92LX · Jul 3, 2004

bln306cpe, break it in the right way, not like a pussC http://www.mototuneusa.com/break_in_secrets.htm

cardudeusa · Jul 3, 2004

Grn92LX said:
bln306cpe, break it in the right way, not like a pussC http://www.mototuneusa.com/break_in_secrets.htm

TheUser · Jul 3, 2004

RustyFox said:
Oh, yea. Screw mileage, you already have a performance V-8. What's a loss of 1-2 MPG?

about $3.32 a week for me 18 mpg vs 16 mpg driving a total of 250 miles per week at an average of $1.75 per gallon of gas results in difference of roughly $3.32.

Chris6050 · Jul 4, 2004

The main reason I wanted to use the Holley heads are because I got them REALLY cheap from a friend. They worked pretty good for him, but he also had the stock 302. MM and FF also tested them and they made good numbers, which I realize was on a 302 and I also take those articles with a grain of salt. I also bought the Trick Flow cam and intake for $200 total from a friend. I plan on giving the cam to my dad, I want to go with a FTI one. The parts may not be the best I could possibly use for the 331, but I think I would be able to get away with using them and be happy and upgrade as time and money permit. I want this engine to last me a LONG time and I plan on keeping the car a long time.

FWIW, I worked with a kid who has a 89 GT vert with a 347 with Trick Flow Street heads, intake, and STOCK cam. He is in the low 12's. I don't remember exact times, but I went down to the track once with him and saw it myself.

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