Is a 347 a smoke machine or not?

Twist it up · October 21st, 2007, 09:21 AM

everybody has an opinion..... my is they smoke after awhile, just from experience, never built one from scratch...

sonicblue · October 21st, 2007, 09:31 AM

i have never had a 347 but i would not think it would smoke just cause its a 347. i would say it is just wore out or wasnt built right.

Twist it up · October 21st, 2007, 09:39 AM

they say the oil ring goes to low on the stroke and causes smoke from oil gettin by the rings.... i agree it's a beast!

vfast · October 21st, 2007, 11:07 AM

the oil ring issues has been taken care of by most piston manufacturers

Iownastang · October 21st, 2007, 11:20 AM

yes they have and they have come out with stroker kits that have a 5.315 inch rod instead od a 5.4 inch rod.but like vfast said it has been taken care of by most piston manufactures and the 5.4 inch rod is fine.,

TENGRAM · October 21st, 2007, 02:12 PM

x3.

1slo5.0 · October 21st, 2007, 11:09 PM

The rod length has nothing to do with it. Either does the wrist pin intersecting the oil ring land. I can believe people still talk about this. This problem has been a dead issue for years. It was all a farce to begin with. A worn out engine will burn oil but 90% of the time the oil consumption comes from valve seals and/or guides. A 347 is not a smoke machine and either are the hundreds of other engines out there that use a similar piston set up with the wrist pin intersecting the oil ring land. Strangely it seems that most people think a 347 is the only engine that uses this piston configuration.

Twist it up · October 21st, 2007, 11:24 PM

Thats why you're hear o'great moderator of the blue oval gang, to set us

:topicsucks dumbasses straight!!!

Speedstang302 · October 22nd, 2007, 09:46 AM

Originally Posted by Darrell

The rod length has nothing to do with it. Either does the wrist pin intersecting the oil ring land. I can believe people still talk about this. This problem has been a dead issue for years. It was all a farce to begin with. A worn out engine will burn oil but 90% of the time the oil consumption comes from valve seals and/or guides. A 347 is not a smoke machine and either are the hundreds of other engines out there that use a similar piston set up with the wrist pin intersecting the oil ring land. Strangely it seems that most people think a 347 is the only engine that uses this piston configuration.

i think 347 is the most hated upon engine...why..just because people like the new "hot engine" 331ci, and know that 347 are better, and they have 1 tiny flaw a while back and rag it to shit..its not fair, cuz you take identical motors, except one 331ci and one 347ci and the 347's will win!!!

1slo5.0 · October 22nd, 2007, 10:05 AM

Originally Posted by Speedstang302

i think 347 is the most hated upon engine...why..just because people like the new "hot engine" 331ci, and know that 347 are better, and they have 1 tiny flaw a while back and rag it to shit..its not fair, cuz you take identical motors, except one 331ci and one 347ci and the 347's will win!!!

What happened is some idiot started a bullshit rumor many years ago that 347s were unreliable first due to the poor rod to stroke ratio and second due to the piston design. The funny thing is guys like Smokey Yunick and Grumpy Jenkins were building engines since the 70s with offset ground cranks, horrible rod to stroke ratios and piston designs like the 347. The only people that talk about poor rod to stroke ratios and 347 oil burning problems are people that have no experience with the subject at hand.

JBIGBOOTSY · October 22nd, 2007, 10:45 AM

+1.... An oil burning 347= one old stroker kit. Really old.

TurboLX · October 22nd, 2007, 11:37 AM

mine never smoked

Speedstang302 · October 22nd, 2007, 07:44 PM

Originally Posted by Darrell

Originally Posted by Speedstang302

i think 347 is the most hated upon engine...why..just because people like the new "hot engine" 331ci, and know that 347 are better, and they have 1 tiny flaw a while back and rag it to shit..its not fair, cuz you take identical motors, except one 331ci and one 347ci and the 347's will win!!!

What happened is some idiot started a bullshit rumor many years ago that 347s were unreliable first due to the poor rod to stroke ratio and second due to the piston design. The funny thing is guys like Smokey Yunick and Grumpy Jenkins were building engines since the 70s with offset ground cranks, horrible rod to stroke ratios and piston designs like the 347. The only people that talk about poor rod to stroke ratios and 347 oil burning problems are people that have no experience with the subject at hand.

very true..i've never built a 347, i've built, 302's, 306's, 460s and stuff but havent yet to touch one...i know alot about the 347, but not from expirence, and i'd be that last to lie on that!!!

86ttops · October 22nd, 2007, 09:34 PM

my 360 is a smok machine

October 21st, 2007, 09:21 AM	#1
Twist it up Regular 1990 hatchback lx Join Date: Oct 2007 Location: north alabama Posts: 227 iTrader: 0 reviews	Is a 347 a smoke machine or not? everybody has an opinion..... my is they smoke after awhile, just from experience, never built one from scratch... __________________ www.hsvracing.com

October 21st, 2007, 09:31 AM	#2
sonicblue Hardcore Enthusiast 1990 GT Join Date: Aug 2006 Location: dalzell, south carolina Posts: 1,436 iTrader: 0 reviews	i have never had a 347 but i would not think it would smoke just cause its a 347. i would say it is just wore out or wasnt built right. __________________ 1990 5.0 getting all fixed up for next season 2004 mustang gt 520rwhp, 491 trq sold

October 21st, 2007, 09:39 AM	#3
Twist it up Regular 1990 hatchback lx Join Date: Oct 2007 Location: north alabama Posts: 227 iTrader: 0 reviews	they say the oil ring goes to low on the stroke and causes smoke from oil gettin by the rings.... i agree it's a beast! __________________ www.hsvracing.com

October 21st, 2007, 11:07 AM	#4
vfast Banned Join Date: Aug 2005 Location: shimmy shack takeout Posts: 1,084 iTrader: 0 reviews	the oil ring issues has been taken care of by most piston manufacturers __________________ EVERYONE IS ENTITLED TO MY OPINION:cool: 6'ers are for kids 1965 chevelle SS 421 sbc 6 speed, 3.90 gears,alum d-shaft, brodix heads,roller cam,925 AED carb...grocery getter[COLOR="Red"]RIP[/COLOR]

October 21st, 2007, 11:20 AM	#5
Iownastang I Post Entirely Way Too Much 1987 ford mustang gt well see when shes done Join Date: May 2007 Location: mascot, tn Posts: 5,020 iTrader: 0 reviews	yes they have and they have come out with stroker kits that have a 5.315 inch rod instead od a 5.4 inch rod.but like vfast said it has been taken care of by most piston manufactures and the 5.4 inch rod is fine., __________________ 2004 tahoe z71 Daily 2004 BBM Gto ls1 6 speed 57,000 miles 1987 mustang hatch,347,world heads,systemax, kooks lts,nitrous, 6 point cage, team z front and rear suspension,8.8, 4.10s, 31 splines strange axles,wilwood brakes, tko600

October 21st, 2007, 02:12 PM	#6
TENGRAM Hardcore Enthusiast Join Date: Jun 2006 Posts: 1,027 iTrader: 0 reviews	x3. __________________ 89 GT t5 3.73 www.my5oh.com/

October 21st, 2007, 11:09 PM	#7
1slo5.0 MM Ninjas! 1990 Mustang LX 9.36@143 mph Join Date: Jan 2006 Location: North Fond du Lac, Wisconsin Posts: 11,375 iTrader: 1 reviews	The rod length has nothing to do with it. Either does the wrist pin intersecting the oil ring land. I can believe people still talk about this. This problem has been a dead issue for years. It was all a farce to begin with. A worn out engine will burn oil but 90% of the time the oil consumption comes from valve seals and/or guides. A 347 is not a smoke machine and either are the hundreds of other engines out there that use a similar piston set up with the wrist pin intersecting the oil ring land. Strangely it seems that most people think a 347 is the only engine that uses this piston configuration. __________________ My daily driver has 16 cylinders and 4400hp @ 1000 rpm.... ***1988 Mustang GT - Stock....almost

October 21st, 2007, 11:24 PM	#8
Twist it up Regular 1990 hatchback lx Join Date: Oct 2007 Location: north alabama Posts: 227 iTrader: 0 reviews	Thats why you're hear o'great moderator of the blue oval gang, to set us :topicsucks dumbasses straight!!! __________________ www.hsvracing.com

October 22nd, 2007, 10:45 AM	#11
JBIGBOOTSY MM Fanatic 1990 LX hatch Join Date: Aug 2006 Location: Hobart Indiana Posts: 4,391 iTrader: 0 reviews	+1.... An oil burning 347= one old stroker kit. Really old. __________________ Bolt-on Abraham Lincoln Log motor. With extra wiring.

October 22nd, 2007, 11:37 AM	#12
TurboLX I Post Entirely Way Too Much 1988 Mustang LX Turbo Join Date: Oct 2006 Location: NY Posts: 8,778 Blog Entries: 1 iTrader: 0 reviews	mine never smoked __________________ 1988 LX Coupe 2.5L, GT35R, 44mm WG, 32psi, C16.

October 22nd, 2007, 09:34 PM	#14
86ttops Hardcore Enthusiast 86,97 mustang gt t tops n/a Join Date: Aug 2007 Location: decatur il Posts: 1,287 iTrader: 0 reviews	my 360 is a smok machine

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