331 stroker or 351

cburns · October 5th, 2011, 10:18 PM

What would be pros and cons of going with a 331 stroker or just building a 351? I have the trickflow street heat top end kit. 70mm trickflow throttle body and 30lb injectors with 75mm mass air. Any suggestions? Car will mostly be a dd.

fogged306 · October 6th, 2011, 09:30 AM

If you keep the 351 stock stroke, then the 331 would probably be faster. Although if you're going to stroke a 302, you might as well go for a 347 instead of a 331. Unless you plan to spin it up well past 7k you're not going to have any issues with a 347 as compared to a 331. If you stroke the 351, then it's a no brainer. More cubes, block can handle more power. If you've got the cash to do the swap and stroke the 9.5 deck, do it.

hotmustang95 · October 6th, 2011, 09:41 AM

I'd say if you already have a 302 block then stoke it because you can reuse your top end kit unlike a 351 where you'll have to get a new intake and headers to fit the block.

69fastback · October 6th, 2011, 01:47 PM

Well that depends on what intake he has. If it's not a good intake, there's no use in waisting money on the stroker kit. So, he may have to buy that stuff anyways to make the stroker even worth it.

cburns · October 7th, 2011, 04:27 AM

I have trickflow top end kit. I was leaning toward the stroker for that reason of already having everything. I just wanted to see if there was anything that would make it better to go with 351. Thanks for the input guys.

StangBanger302 · October 8th, 2011, 08:25 AM

Honestly, you might only see a 20rwhp gain going from a 302 to a 347.... you need a better combination to make a stroked motor worth it.

cburns · October 8th, 2011, 09:54 AM

Maybe this is a better question. I have trickflow street heat top end kit, cold air, 75mm mass air, 70mm throttle body, 30lb injectors 190lph fuel pump, adj fuel reg. Electric fan, Mac pro chamber h pipe no cats and flows and 3.73 gears 5 lug conversion. I have already budgeted for headers and bigger aluminum radiator, clutch and harmonic balancer. so with all that I was wanting to do the 331. If I don't do 331 I would still need to buy pistons bout 500 bucks. Stroker kit cost 1000. If y'all don't think my top end kit is good enough for stroker or is not worth the money what would y'all get with the extra 500 dollars?

Burn'nRubber · October 8th, 2011, 02:04 PM

^ Spray the bitch.

October 5th, 2011, 10:18 PM	#1
cburns Newbie 1989 mustang gt vert Join Date: Oct 2008 Location: henrietta texas Posts: 29 iTrader: 0 reviews	331 stroker or 351 What would be pros and cons of going with a 331 stroker or just building a 351? I have the trickflow street heat top end kit. 70mm trickflow throttle body and 30lb injectors with 75mm mass air. Any suggestions? Car will mostly be a dd. __________________ Prepare your brain for RAZZLE DAZZLE!

October 6th, 2011, 09:41 AM	#3
hotmustang95 Regular Last of the 302's Road Racing Rookie Join Date: Sep 2009 Location: Boynton Beach, FL Posts: 373 iTrader: 0 reviews	I'd say if you already have a 302 block then stoke it because you can reuse your top end kit unlike a 351 where you'll have to get a new intake and headers to fit the block. __________________ Victor ( goofyfeet) Oliver P.B.M.C. Member Track Addict

October 6th, 2011, 01:47 PM	#4
69fastback Premium Member 1969 Mustang Mach 1 6.824@101.61 Join Date: Aug 2006 Location: Oklahoma jackass, get to driving Posts: 5,565 iTrader: 0 reviews	Well that depends on what intake he has. If it's not a good intake, there's no use in waisting money on the stroker kit. So, he may have to buy that stuff anyways to make the stroker even worth it. __________________ ./___ _ ____ ___ \. ( ]]] _ _ O _ _ [[[ ) \_ o _ _____ _ o _/ \|___\| ......... \|___\| http://www.youtube.com/watch?v=HyYU3...e_gdata_player

October 7th, 2011, 04:27 AM	#5
cburns Newbie 1989 mustang gt vert Join Date: Oct 2008 Location: henrietta texas Posts: 29 iTrader: 0 reviews	I have trickflow top end kit. I was leaning toward the stroker for that reason of already having everything. I just wanted to see if there was anything that would make it better to go with 351. Thanks for the input guys. __________________ Prepare your brain for RAZZLE DAZZLE!

October 8th, 2011, 08:25 AM	#6
StangBanger302 Hardcore Enthusiast 1992 Mustang LX 13.0 @ 105 Join Date: Jun 2010 Location: New York Posts: 2,230 iTrader: 0 reviews	Honestly, you might only see a 20rwhp gain going from a 302 to a 347.... you need a better combination to make a stroked motor worth it. __________________ As I lay rubber down the street I pray for traction I can keep But if I spin, and begin to slide Please dear God, protect my ride

October 6th, 2011, 09:30 AM	#2
fogged306 MM Fanatic 89 GT Join Date: Apr 2007 Location: NY Posts: 4,875 iTrader: 2 reviews	If you keep the 351 stock stroke, then the 331 would probably be faster. Although if you're going to stroke a 302, you might as well go for a 347 instead of a 331. Unless you plan to spin it up well past 7k you're not going to have any issues with a 347 as compared to a 331. If you stroke the 351, then it's a no brainer. More cubes, block can handle more power. If you've got the cash to do the swap and stroke the 9.5 deck, do it.

October 8th, 2011, 09:54 AM	#7
cburns Newbie 1989 mustang gt vert Join Date: Oct 2008 Location: henrietta texas Posts: 29 iTrader: 0 reviews	Maybe this is a better question. I have trickflow street heat top end kit, cold air, 75mm mass air, 70mm throttle body, 30lb injectors 190lph fuel pump, adj fuel reg. Electric fan, Mac pro chamber h pipe no cats and flows and 3.73 gears 5 lug conversion. I have already budgeted for headers and bigger aluminum radiator, clutch and harmonic balancer. so with all that I was wanting to do the 331. If I don't do 331 I would still need to buy pistons bout 500 bucks. Stroker kit cost 1000. If y'all don't think my top end kit is good enough for stroker or is not worth the money what would y'all get with the extra 500 dollars? __________________ Prepare your brain for RAZZLE DAZZLE! Last edited by cburns; October 8th, 2011 at 10:02 AM.

October 8th, 2011, 02:04 PM	#8
Burn'nRubber Regular 1992 Mustang GT Coming soon... Join Date: Aug 2007 Location: Rushville, IN Posts: 253 iTrader: 0 reviews	^ Spray the bitch. __________________ 1992 Hatch: 306ci, gt40p's, comp xe270, Edelbrock Performer, 1.6 r/r, full bolt-ons, and some supension work

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