[marks86gt]

I've been doing some window shopping for a 331 stroker. My stang is meant for the street and is not a daily driver. Would my money be better spent on other components to make up the hp loss? Does the 331 give me better low end torque than a 306? And is the torque difference that it can't be made up with another bolt on. Consider the following: 2 engines both with AFR heads, custom ground camshaft, upgraded fuel components, etc. Identical in every way except one is a 331 and the other is a 306. What is a potential power differential and is it worth the extra money for this differential in a mean street stang? Thanks in advance

 

[glenn]

depends on which AFR's you are going to go with. 306 I'd go with the 165's, 331 i'd go with the 185's of course the 331/185 will make more power, and might be worth it. I however am running a 306 with the 165's, and love it.

 

[STONECOLD]

i think it all depends on what you want tthe car to do, you can use the 165's with the 331 and make great power, the 185's will do the same but i think they will make more of their power higher in the powerband.

 

[marks86gt]

Are we talking 50+ hp difference on a NA motor or are we talking 10-20 hp difference? I'm really trying to get a feel of cost vs hp for each. Does the added cost of the 331 increase hp so dramaticly on a street car that cost should be no issue? If I don't do the 331 what will I be missing? Thanks

 

[STONECOLD]

i couldnt tell you numbers but, youll be missing out on displacement and the potential for more power, i think (and dont quote me on this) a 331 is equivalent to a 5.4 liter engine. so is it worth the extra money? that depends, how bad do you want the extra power? i know if i had the money for a 331 i wouldnt think twice about purchasing it.

 

[countymounty]

Having a 331 I can definitely say it is worth it, the 331 is basically a 5.5 liter engine. With more displacement you of course get more HP, but the real seller is you get much better low level trq. How much?, well it is hard to say as it depends on a number of thing, but you should see at lest 30hp difference but with the right components you have much more potential. MM&FF should have some numbers on a 331 with a assortment of different heads in the next couple of issues.

 

[Guest]

It also depends on how much money you have to spend and if you can afford to do it all at once.

We are currently in the process of doing an AFM 331 Stroker Budget Build Tech Project, with emphasis on building a race prepped bottom end that generates more HP than it has in cubic inch displacement.

Looking forward to posting about our 331 stroker build within the next week or so. We are looking at the 331 engine build to be completed by the end of September and the complete article online by the end of October.

Sound interesting? We sure think it does and we sure hope you guys do as well

 

[spyder]

theres no way you can say how much more HP a 331 will produce VS a 306. its a different motor. period. it will produce more power, duh, how much is in the combo.

 

[Fordracing2]

If your going to do a stroker kit, I'd suggest a 347 stroker.

 

[marks86gt]

spyder, all I'm saying is that why should I pay the extra money for a measely gain that I would never use or feel? Like I said previously, the combos would be similar except for cubic inches. True, the 331 will require more airflow than the 306 and the heads/cam/intake I select would more than handle the airflow for each. I'm at a juncture where I need to make up my mind because I need to select the correct parts in order for my project to take off. Just a ballpark esimate of power difference is what I'm looking for. Thanks

 

[spyder]

wont feel? you'll feel the torque going from your stock 8.9.1 302 to a 10.1. 331. this is the route im going, a DSS 10.4.1 compresison 331 with a bunch of other goodies, it will be enough power to go 11's but next year im gonna work on actually getting there, which is the tough part. i'd recomend a 331 if your looking to build a good solid street car NA. im still looking at DSS's 347 though, i just need some sort of warranty if i were to go 347 though due to the geometry of it as raptor put it. anyway, i'd recomend a stroker, just as PKSTANGER how he likes his

hey pkstanger, you get any sort of warranty from DSS ?

 

[pkstanger]

Warranty??? On a race preped engine??? Are you nuts???

I love my DSS 331. I went with a mild cam. Peak power is at 5500. Shift light at 5800, rev limit 6000 rpm. With the stock 3.08 gears I ran a best 12.47@ 110.75 w/ 1.77 60ft. I just got the 3.73's and some 31 spline axles so I can really let it rip. I'll let you know how it works out, if it ever stops raining.

This car is my daily driver. I put over 1600 miles on it this week. I got almost 22mpg on the highway with me (250lbs) and cargo (400lbs) in the car. City mileage was about 17.

 

[spyder]

pkstanger, heres the combo im planning

1) DSS 10.4.1 331
2) having my twisted wedge heads ported by fox lake
3) upgraded valve springs
4) FTI custom cam (Ed curtis)
5) track heat intake or perhaps a holley systemax II (either way, lower ported to match)
6) MAC long tubes with high flow h pipe and bassani catback
7) AODE built with PI converter and whatever stall ed recomends, and street terminator valvebody
8) set of sticky tires

and a bunch of other things in addition to that but those are the main players, looking to break into the 11's with it.

pkstanger theres more in your combo, the cam you have is chockin that 331, only 218 intake duration?!?! longtubes too man.. pick up some BBK's

 

[Guest]

well a 331 is around 10% bigger than a 306 so it will have around 10% more hp and tq than a 306 if the builds are similar. yes you will feel the diff but nat as drastically as a 347.

 

[stangdawg]

Considering the first post was from 2003 I hope nobody is waiting for an answer...