huntingman2706217

im going to go buy this 88 finally for a grand but i need the bellhousing bolts and starter bolts... they lost them... but i dont know what sizes they are and lengths... its a I6 and a automatic... dont know how many i will need either... i want to bolt the starter up so i can at least turn it over first before i buy it... so as soon as i figure out what size they arm im buying them and taking them with me... thanks for the info guys!

huntingman2706217

oops... posted then searched... figure i would never find anything... but i did... well mostly... how many 7/16 bolts and 3/8's bolts will i need? anyone know the lengths? i found the sizes but doest say how many of each i will need... just says 3/8 up high and 7/16 down low... guess i can go look at it and see but was gonna hit it here first...

5-90

I've got the bellhousing and starter screws listed on my site (I think,) but there's a bit of a catch...

The starter motor screws may be either 3/8"-16 or M10-1.5. No way to know beforehand.

As far as length goes; if I don't have lengths listed after all the thumb rule is "For maximum bolted joint strength, engage 1d to 1.5d of thread. "d" is equal to the nominal diameter of the thread."

Short form? Measure the thickness of the flange the screw goes through, then add the nominal thread OD. Round up to the next size (usually in quarter-inch increments.) Viz: If the bellhousing flange at the lower screws measures, say, 5/8" thick; add the 7/16" nominal diameter to it. 5/8" = 10/16". 10/16" + 7/16" = 17/16" = 1-1/16". Round up to 1-1/4". Buy 7/16"-14x1-1/4" screws. (This is just an example. Measure your flanges first - the critical measurement is the unthreaded hole.)

You'll need two 3/8"-16xwhatever screws for the upper bellhousing, two 7/16"-14xwhatever screws for the lower bellhousing, and either two 3/8"-16xwhatever; two M10-1.5xwhatever; or 1 3/8"-16xwhatever and 1 M10-1.5xwhatever screw(s) for the starter motor (I know it can get silly - on my 88, it's one of each.)

However, consult the screw size chart in the Tech section of my site first - it could save you some measuring. If I've managed to miss adding them, please let me know what you ended up getting so we can help the next guy!