Taking engine out

roscoe · June 12th, 2007, 11:03 PM

im taking the engine out next weekend, want to bore it out into a 306 or a 308, what do you guys think? what am i going to have to upgrade to make the bigger engine better (TB, heads, cam, etc...)? or can i use the stock stuff for a while?

Tony_90fox · June 12th, 2007, 11:35 PM

If you have the motor bored, you will need new pistons, might as well get the whole rotating assembly....You could keep everything else stock if you wanted to, but dont have too obviously, A new top end kit (trick flow makes good stuff) would suit your 306 well...exhaust, gears, good sticky tires, suspension....I could go on forever.

TurboLX · June 12th, 2007, 11:38 PM

a 306 is a 30" bore, i would go with a 347 stroker

roscoe · June 13th, 2007, 01:50 AM

347? i wouldnt mind but now your talking serious $$$$ and im planning on driving this thing to work, i drive about 15-20 miles each way, with gas the way it is now.... well you know.

roscoe · June 13th, 2007, 02:11 AM

how reliable is this combination, making a 302 into a 347 would i have any issues down the road?

92Rideagain · June 13th, 2007, 08:53 AM

I would suggest a 331 stroker kit. The 347 causes a lot piston rock in the cylinder walls due to the extreme angle of the rod. This can cause early excessive wear and damage to the rings over time. The 331 has a decent displacement and has a good rod to piston to ratio so it does not have the rocking of the piston like the 347 does. Ronnie Crawford out of Florida made the 347 famous, there are quite a few daily drivers out there with 347's in them. In my opionion I would go for the 331. Call DSS, Coast High Performance, Kuntz Co. and ask the experts. Once you advise them of what you intend to do with the car they can recommend the best one for you. These forums are great but nothing can subsitute advice from the experts, the people buidling these kits day in and day out. They are helpful and do not mind discussing what will be more dependable based on your needs. Good luck.

bgddy50 · June 14th, 2007, 09:53 AM

Im runnig a coast high performance 347, and have no complaints. I called them myself about a 331 and decided on the 347. Smog legal at that! If you have the funds its well worth it.

8t6gt · June 14th, 2007, 10:37 PM

Definitly just go with the 331 stroker the 347 has such a long stroke that it just isnt practical for the road.

Tony_90fox · June 15th, 2007, 05:45 PM

I know more guys with 347s than 331s, and they are all daily driven...16 more cubes for the same amount of money...I am going 347 for sure.

TurboLX · June 15th, 2007, 06:01 PM

my last one was a 347

P.O.S-GT · June 17th, 2007, 03:07 PM

for something that you are planning on driving daily i would do the 331 stroker kit.

June 12th, 2007, 11:03 PM	#1
roscoe Newbie Join Date: Feb 2007 Posts: 29	Taking engine out im taking the engine out next weekend, want to bore it out into a 306 or a 308, what do you guys think? what am i going to have to upgrade to make the bigger engine better (TB, heads, cam, etc...)? or can i use the stock stuff for a while?

June 12th, 2007, 11:35 PM	#2
Tony_90fox MM Fanatic Join Date: Jun 2006 Location: Bowling Green, KY Posts: 3,445	If you have the motor bored, you will need new pistons, might as well get the whole rotating assembly....You could keep everything else stock if you wanted to, but dont have too obviously, A new top end kit (trick flow makes good stuff) would suit your 306 well...exhaust, gears, good sticky tires, suspension....I could go on forever. __________________ Suck on it Trebek. Suck it long, suck it hard.

June 12th, 2007, 11:38 PM	#3
TurboLX I Post Entirely Way Too Much 1990 Mustang LX Turbo 8.67@165.91 mph Join Date: Oct 2006 Location: Hidden In NY Posts: 8,358	a 306 is a 30" bore, i would go with a 347 stroker __________________ Wiring Diagrams, TSB's, OBD Service Codes and Engine Diagrams Available. PM For Info Myspace

June 14th, 2007, 09:53 AM	#7
bgddy50 Newbie Join Date: Aug 2006 Location: Yuba City CA Posts: 34	Im runnig a coast high performance 347, and have no complaints. I called them myself about a 331 and decided on the 347. Smog legal at that! If you have the funds its well worth it. __________________ CHP 347, AFR 185's, T-56, Maximum motor sport complete suspension, 3. 55 gears

June 15th, 2007, 05:45 PM	#9
Tony_90fox MM Fanatic Join Date: Jun 2006 Location: Bowling Green, KY Posts: 3,445	I know more guys with 347s than 331s, and they are all daily driven...16 more cubes for the same amount of money...I am going 347 for sure. __________________ Suck on it Trebek. Suck it long, suck it hard.

June 13th, 2007, 01:50 AM	#4
roscoe Newbie Join Date: Feb 2007 Posts: 29	347? i wouldnt mind but now your talking serious $$$$ and im planning on driving this thing to work, i drive about 15-20 miles each way, with gas the way it is now.... well you know.

June 13th, 2007, 02:11 AM	#5
roscoe Newbie Join Date: Feb 2007 Posts: 29	how reliable is this combination, making a 302 into a 347 would i have any issues down the road?

June 13th, 2007, 08:53 AM	#6
92Rideagain Regular Join Date: Jun 2007 Location: Al Qa'im Iraq Posts: 56	I would suggest a 331 stroker kit. The 347 causes a lot piston rock in the cylinder walls due to the extreme angle of the rod. This can cause early excessive wear and damage to the rings over time. The 331 has a decent displacement and has a good rod to piston to ratio so it does not have the rocking of the piston like the 347 does. Ronnie Crawford out of Florida made the 347 famous, there are quite a few daily drivers out there with 347's in them. In my opionion I would go for the 331. Call DSS, Coast High Performance, Kuntz Co. and ask the experts. Once you advise them of what you intend to do with the car they can recommend the best one for you. These forums are great but nothing can subsitute advice from the experts, the people buidling these kits day in and day out. They are helpful and do not mind discussing what will be more dependable based on your needs. Good luck.

June 15th, 2007, 06:01 PM	#10
TurboLX I Post Entirely Way Too Much 1990 Mustang LX Turbo 8.67@165.91 mph Join Date: Oct 2006 Location: Hidden In NY Posts: 8,358	my last one was a 347 __________________ Wiring Diagrams, TSB's, OBD Service Codes and Engine Diagrams Available. PM For Info Myspace

June 17th, 2007, 03:07 PM	#11
P.O.S-GT Regular Join Date: Feb 2007 Location: phoenix az Posts: 54	for something that you are planning on driving daily i would do the 331 stroker kit. __________________ 1990 GT HATCH trw pistons/351 heads with all the goodies schneider 260 cam/8.8 posi w/4:10's 1/4 mile unknown??? cause she wont start

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