I'm bout to swap a 350 vortec in place of my 305 tbi, it has a wc-t5, anyway it could handle the power and torque of the 350? Im not going to be driving too hard right off.... It'll be a stock 98-99 350, with a mild cam, vortec 4brrl carb intake with adapter, 670cfm tbi, and maybe a slight boost in heads, definitely 1.6 rr.... Think it will handle or should I go t56? Thanks

 

The 350/T-5 question is asked frequently, so you might consider a search for more info. The bottom line is that if you drive reasonably, the T-5 is likely to hold up (mine has for several years now). If you're into more spirited driving, consider something stronger such as the T56.

JamesC

 

Drive it with some common sense, and forget about drag radials, and the odds of it holding together will tilt in your favor. That said, toss all your spare change into a piggy bank and put that toward an eventual upgrade.

I've had my T5 in my IROC for a while now (8 or 9 years maybe??) and it's held up beautifully as I've chipped away at my 1/4 mile times, with it now in the 13.6 second range. Real soon that motor's getting a vortec head upgrade and getting put into my GTA, so we'll see how long the T5 holds up after the power upgrade.