331 w/ S-trim boost questions

[blown1989saleen]

im going with a 331 this coming spring, im gonna be using my S-trim for a bit longer, with a 2.95"/7.00" pulley setup i was seeing 13-15psi with a stock bottom end 302. so what can i expect the boost to drop to with the 331?


Scott

[RdRunnr]

I gotta ask the million dollar question...why a 331 instead of a 347? If you're running the same heads, exhaust, etc. I wouldnt expect any boost drop off.

[blown1989saleen]

well talked to a couple prospective engine builders, BB&T racing, Keith Craft were the main ones and they told me the 331 would be a better choice than 347 for a car that sees ALOT of street time. Eric i explained to them i drive my car everyday and they recommended the 331. BB&T were the ones that said the S-trim wouldnt cut it with the 331, sounded odd to me too :? he said with the 2.95"/7.00" pullies im running now i would only see 7-8psi


Scott

[fast5liter331]

You might see a couple psi drop but i don't think it will be that much. You can always get a 8 inch crank pulley too.
Mike

[modo]

derrick at bb&t is good people, they build my 331 shortblock

well scott with my 331, with the t-trim, 6.87 / 2.95 spinnin the motor to 7000 rpms i only see 14 lbs of boost

[blown1989saleen]

derrick at bb&t is good people, they build my 331 shortblock

well scott with my 331, with the t-trim, 6.87 / 2.95 spinnin the motor to 7000 rpms i only see 14 lbs of boostare you overall happy with the BB&T short block? i knew there was someone on here or another board using one of their shortblocks, just couldnt remember who. what block did you use? the R302 or Dart. Thanks in advance for answering my questions. guess with my little ole' S-trim going to about 6000-6200 i'll prolly only see 8-9psi then afterall


Scott

[modo]

derrick at bb&t is good people, they build my 331 shortblock

well scott with my 331, with the t-trim, 6.87 / 2.95 spinnin the motor to 7000 rpms i only see 14 lbs of boostare you overall happy with the BB&T short block? i knew there was someone on here or another board using one of their shortblocks, just couldnt remember who. what block did you use? the R302 or Dart. Thanks in advance for answering my questions. guess with my little ole' S-trim going to about 6000-6200 i'll prolly only see 8-9psi then afterall


Scott

very happy, price was right and the service i got afterwards was great as well. anytime i called i always got someone on the phone or a return phone call very quickly. a friend of mine had his 408 based shortblock built from them too, he is the one who pointed me to them. he is also very happy with his motor.


i went with the r block, eagle crank, eagle h-beams, srp blower pistons

[blown1989saleen]

Thanks modo, i think im gonna go with BB&T then, ive had MANY good dealing with them buying parts in the past too. Thanks again.



Scott

[modo]

Thanks modo, i think im gonna go with BB&T then, ive had MANY good dealing with them buying parts in the past too. Thanks again.



Scott

no problem, if you get derrick on the phone tell him my dennis from phila 331 put down 632 rwhp on pump gas lol, he should get a kick out of that

[tiny4lx]

From my understanding Conner from newark had a 331 in his cobra and that thing was a pig. He had nitrous,full suspension,fuel,5spd and weight reduction and it wouldnt even stand next to rich back before rich got serious. I watched 2 back to back races and it was sad.

TO EACH THEIR OWN

[blown1989saleen]

From my understanding Conner from newark had a 331 in his cobra and that thing was a pig. He had nitrous,full suspension,fuel,5spd and weight reduction and it wouldnt even stand next to rich back before rich got serious. I watched 2 back to back races and it was sad.

TO EACH THEIR OWNwell youve seen what my setup did before right? well imagine more cubes and a motor i can lean on tune wise. im looking for easy 10's@130+

[tiny4lx]

I understand im not downing the motor. But if your talking cubes why not 347? Im just busting balls here. But if its cubes your looking for then wouldnt 347 be the motor of choice. In all i know you did your home work and it will haul ass.