My Pro Torque converter came with NO bolts. My trans builder told me the stock bolts wouldn't be strong enough, and I need grade 8.

I got grade 8 bolts from Discount Auto, but they're too long (bout 1/2"). The stock bolts fit fine, but if they're not strong enough, then that is not an option.

My trans install is tomorrow at 10am and I NEED these bolts by tomorrow morning!!!!

Where can I get grade 8 bolts in that size? Would NAPA have them??

Thanks
Matt

 

can't you cut the bolts down to the right size? Use a hacksaw or dremel.

 

the stock bolts should be a grade 8 or 9.8 (equivalent in metric) I'm pretty sure they are english threads so it will be grade 8.. distingished by 3 dashes on the head of the bolt

 

mine were grade 8. i just re-used stockers with my holeshot 2400 and 383 engine. i've had no problems with about 2k miles on it.

 

Yeah I just cleaned up the stock bolts...they fit fine so I'm gonna re-use them. They're rated 9.8 Metric btw, which has a 130,000psi tensile strength. Grade 8 SAE has a 150,000 tensile strength, so it's strong, but not quite as strong as grade 8.

 

its considered a equivalent in the engineering world.

 

You could have also taken your stock bolts to Lowe's and probably found some grade 8 bolts that matched them. They sell all kinds of bolts.

 

I'm pretty sure I used my stock bolt too. It's been over a year and no problem yet.

 

Thanks for the replies, I appreciate it!

 

i just did my stall and reused the stock bolts

 

or you could just cut the ones you already bought down! its not hard and will work perfectly as long as you dont ****up all the threads.