bottlefed01z28

iTrader: (21)

alright im doing a build up of my 402 i pulled the flex plate off my old ls1 and found the flexplate was broken, so i ran out today and bought a TCI flexplate, i already have a Vig 3600 stall and it came with new bolts, when i went to check everything out the new bolts i got too small but the stock bolts will work just fine why should i replace the stock bolts? i keep hearing out how people r always using arp bolts but i want to put my motor in the car on saturday and i cant get bolts in time.

i have included pictures of the cracked flexplate and pictures of the stock bolts compared to the new bolts and i have pictured the extra space they added to the TCI flexplate.

moehorsepower

iTrader: (3)

Bolts go through a stretch phase every time they are torqued. Not saying using the old bolts is wrong, many have done it with no problems, Myself, if it is an accessible and non critical area, such as say bolts to your alternator, ok reuse them, but fasteners that are hard to get to and could cause catastrophic diaster, I would take the time to wait and install new ones with the proper grade level...But thats just me....

BOA279

iTrader: (1)

do it right. Spending all that time and money to build exactly what you wanted....ruined by 3 stupid bolts. Although they will probably work, for a few extra dollars and a few more days have piece of mind.

bottlefed01z28

iTrader: (21)

ok i have decided to just use the old bolts for now until i get new ones then ill exchange them thaks for the input

9000th01ss

iTrader: (10)

Why wait? Do it now, the short bolts could be bought at a hardware store or good automotive store.
They just need to be 10.x or whatever the strength the stock ones are and the right length. The Carquest around here carrys a good name brand line of metric bolts in all grades. Maybe theres a similiar store near you.

tording99Z28

iTrader: (3)

Are you sure the stock length bolts are not bottoming out in the coverter and not actually getting tight? I put a stock bolt in my Yank when I installed it a few weeks ago just to see and the bolt would bottom out in the converter before they would get tight. I used the bolts that came with the converter and had no problems. They seem too short but they are not. The coverter just needs to be sucked up against the flexplate a little bit so that there are enough threads holding the converter. Just make sure the converter is getting tight against the flexplate.

PSU 98

iTrader: (4)

What size are the new bolts you bought? They don't even look to be half the size of the stockers.

9000th01ss

iTrader: (10)

The bolts he has pictured are stock on the right, the ones on the left came with the converter and would work fine with a stock flexplate but the TCI flexplate he has, has spacers welded to it. This makes the bolts supplied with the converter too short.

tording99Z28

iTrader: (3)

Based on another thread I found grade 8 M10 x 1.5 x 20mm long bolts were used. 20mm is the length and this is the correct length for the TCI flexplate according to this thread. You can get them at ACE hardware. Here is the thread:
https://ls1tech.com/forums/showthrea...light=bolts+tc

9000th01ss

iTrader: (10)

Becareful with metric bolts. Grade 8 is a pretty strong SAE bolt but it's at the lower end of a M10 metric bolt. The stock converter bolts are graded 10.9