306 vs 331

gon4x4n · 01-23-2001, 07:00 AM

I'm looking at either a DSS or Kieth Craft 331, However I noticed it's about a $1000 cheaper for similarly setup 306. In a supercharged application is it worth it? Anyone had both that could comment on the improvements? thanks alot

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Prerunner F150 with 92' Mustang 302, Aftercooled Vortech S-Trim with 2.75 10 rib pulley set, Maxflow bypass,
Vortech Fuel Rails, Cartech inline Pump with #8in and #6out feeding 36lb injectors, Powerflex 4" inlet tube
Edelbrock Aluminum Heads(2.02/1.60), HIFLO waterpump, 70mmTB, Performer intake, MSD 6ALBTM,
Doug Thorley Tri-Y Long tubes to single DynoMax Race Magnum, C6 with 2600 Stall 4.10s with Lockers,
engine relocated 14.5" rearward!!

84_GT350 · 01-23-2001, 11:59 AM

Hell, if you've got a blower a well built 306 should be plenty. Yeah, a 331 will make more power...but the question is will it make $1000 worth of power? Somehow I doubt it. DSS advertises 10s with a well built 306and a blower. That's, what....around 450hp or so? Unless you're running heads up class racing would you really need more than that?

buddha · 01-23-2001, 07:09 PM

Youre trying to compare apples and oranges here. What your looking at is a 302 with a .030 overbore and a stroker motor. This is why you have a 1000 dollar difference. It comes down to what your looking for and how much HP your looking for.

n20lx · 01-23-2001, 08:59 PM

I'm kinda confused by this. I have a DSS 331 & they didn't have a 306 with an aftermarket crank & Crower rods for $1000 less when I got mine last summer.

MiracleMax · 01-23-2001, 10:32 PM

Hmmm... If you were starting from scratch I'd build the bigger motor. If you have all the components for a 306 and your running a blower, all things being equal (except for stroke) then its only a matter of 25 cubic inches and maybe another 25 hp?

01-23-2001, 07:00 AM	#1
gon4x4n Registered Member Join Date: Nov 2000 Location: Zeeland,Mi,USA Posts: 16	306 vs 331 I'm looking at either a DSS or Kieth Craft 331, However I noticed it's about a $1000 cheaper for similarly setup 306. In a supercharged application is it worth it? Anyone had both that could comment on the improvements? thanks alot ------------------ Prerunner F150 with 92' Mustang 302, Aftercooled Vortech S-Trim with 2.75 10 rib pulley set, Maxflow bypass, Vortech Fuel Rails, Cartech inline Pump with #8in and #6out feeding 36lb injectors, Powerflex 4" inlet tube Edelbrock Aluminum Heads(2.02/1.60), HIFLO waterpump, 70mmTB, Performer intake, MSD 6ALBTM, Doug Thorley Tri-Y Long tubes to single DynoMax Race Magnum, C6 with 2600 Stall 4.10s with Lockers, engine relocated 14.5" rearward!!

01-23-2001, 11:59 AM	#2
84_GT350 Registered Member Join Date: Apr 1999 Location: Overland Park, KS, USA Posts: 1,631	Hell, if you've got a blower a well built 306 should be plenty. Yeah, a 331 will make more power...but the question is will it make $1000 worth of power? Somehow I doubt it. DSS advertises 10s with a well built 306and a blower. That's, what....around 450hp or so? Unless you're running heads up class racing would you really need more than that?

01-23-2001, 07:09 PM	#3
buddha Registered Member Join Date: Feb 2000 Location: Washington, MO Posts: 327	Youre trying to compare apples and oranges here. What your looking at is a 302 with a .030 overbore and a stroker motor. This is why you have a 1000 dollar difference. It comes down to what your looking for and how much HP your looking for.

01-23-2001, 08:59 PM	#4
n20lx Registered Member Join Date: Sep 1998 Posts: 495	I'm kinda confused by this. I have a DSS 331 & they didn't have a 306 with an aftermarket crank & Crower rods for $1000 less when I got mine last summer.

01-23-2001, 10:32 PM	#5
MiracleMax Registered Member Join Date: Apr 1999 Location: Hayes, Va, USA Posts: 798	Hmmm... If you were starting from scratch I'd build the bigger motor. If you have all the components for a 306 and your running a blower, all things being equal (except for stroke) then its only a matter of 25 cubic inches and maybe another 25 hp?