Hey i have a 86 gt stock it has a t t t t t sound to it. i will be just a weekend car that will get drove hard was wondering whats better to go with 331 or the 347? figure that the motor is going to go soon so just kinda looking to get an idea

 

prolly nothing more than a collapsed lifter or a rocker arm adjustment.

 

go with the 347 if its just a weekend car. since its not a DD then u can get a little more drastic with the cam and setup and make some serious power. u can get 20-50 more hp with a 347 than the 331. (16 more cubes, 1.3 hp per cube = 20hp..every setup is different some will make more then others)

 

i havea 347 and its going to be a daily driver street/strip car,

 

dont get me wrong a 347 can be a dd. just stating my opinion. its a fact that u can get more miles out of a 331 than a 347 b/c the 347 pistons move more per crank rotation at same rpm b/c of the rod length and stroke vs the 331. but getting an stroked engine made for alot of horses to last 100,000 miles isnt going to happen more than likely, u will either blow it some way or the other or just crack the block by wanting more hp lol

 

I have a 331 and its a DD.

 

i agree i dont think ill get 100,000miles outta my 347 but i know a couple guys that have just have to be built right and with the right parts just depends on how you treat it i think a turbo'd 331 sounds pretty nice, but i love my 347 pretty fun NA right now

 

my car has the tttt sound, i thought it was normal.....

 

i got a lot of rocker and lifter noise but thats what i get for high performance crap ive never had a set of new roller rockers not make the t t t t t t sounds

 

A roller motor makes a slight taping noise from the get go.