Damn lifter hold down (spyder) bolts !!!

[Busted07]

Ok, im doing everything i can besides buy the whole lifter hold down set from ebay, but what i actually need is the 2 bolts that hold the lifter spyder down. The guy at the ford dealership wont order them for me, because they come 15 to a box, and they said they never sell them, so i would have to buy a box of 15 of them.

what he did tell me was that the bolts are 1/4" x 5/8" long. fine, i can find those, but what i dont know is, are they fine thread, coarse thread, millimeter sized, and if they have a washer underneath it, or if they have that flat washer looking thing built onto the bolt.. can someone please help a brother out here

 

[8950HO]

Ok, im doing everything i can besides buy the whole lifter hold down set from ebay, but what i actually need is the 2 bolts that hold the lifter spyder down. The guy at the ford dealership wont order them for me, because they come 15 to a box, and they said they never sell them, so i would have to buy a box of 15 of them.

what he did tell me was that the bolts are 1/4" x 5/8" long. fine, i can find those, but what i dont know is, are they fine thread, coarse thread, millimeter sized, and if they have a washer underneath it, or if they have that flat washer looking thing built onto the bolt.. can someone please help a brother out here

I looked in my 89,Ford Mustang car shop manual,but it doesn`t show the size of those bolts.

Going by memory,mine were roughly 1/2" long,(maybe less) and at least 5/16" or 3/8" thick,(one or the other...1/4" sounds too thin,unless I`m wrong),with coarse threads and I`m pretty sure they had no lock washers.

Just get some coarse thread grade 8 bolts from a hardware store.

 

[87GT 306]

Ok, im doing everything i can besides buy the whole lifter hold down set from ebay, but what i actually need is the 2 bolts that hold the lifter spyder down. The guy at the ford dealership wont order them for me, because they come 15 to a box, and they said they never sell them, so i would have to buy a box of 15 of them.

what he did tell me was that the bolts are 1/4" x 5/8" long. fine, i can find those, but what i dont know is, are they fine thread, coarse thread, millimeter sized, and if they have a washer underneath it, or if they have that flat washer looking thing built onto the bolt.. can someone please help a brother out here

MAKE SURE they are the right ones...When we built my motor, we used ones that were a little too long and they ran into the cam bearings and ruined them.

 

[50gt1988]

MAKE SURE they are the right ones...When we built my motor, we used ones that were a little too long and they ran into the cam bearings and ruined them.

Ran into the cam bearings? Ok I'm confused, the threaded holes dont go anywere near the cam bearings?

 

[TheBocSez]

I just put my intake on last week. From what I remember, they are about 1/2" long, dont remember the thread pitch, but they have a flanged head with no extra washers.

If the parts guy said they were 1/4" go buy some 1/4 inch bolts in Fine and coarse threads, you only need 2 and they can be more than 0.10 each at a hardware store.

 

[feifong]

View attachment 482698

 

[50gt1988]

yeah i just got two half inch bolts and put lock washer between the bolts and the spyder, tightened fine

 

[squeeeg]

Since you have the bolt size I would just go somewhere and buy 1 of each thread size and figure out which is the right one. Bolts are fairly cheap I think it would save some headache

 

[Busted07]

Thak you guys for all the help and the pictures! I am making a trip to the bolt place this weekend to see what i can come up with.... and i looked through the holes, and saw that if the bolts are too long, it does in fact look like they would run into the cam itself