Intake Bolt and Tranny to Engine Bolt Question UPDATED QUESTION

[Fast_68_440]

Can somebody please tell me the correct length for the intake manifold bolts for a 68 440?  I believe the thread size is 3/8-16 but I am unsure of the proper length.  Also What is the thread size and length of the bolts that bolt the tranny to the engine?  Also what is the size and length of the 4 bolts to that hold the flex plate to the torque converter?  Thanks

[gtx6970]

intake bolts - 3/8" - 16 x 1.5"
trans to engine - uppers 3/8" - 16 x 1.25"     Lowers  7/16' - 14 x 2"
flex plate to torque conv -  5/16" - 24 x 7/16"

[Fast_68_440]

Thanks 

[Fast_68_440]

Where can I find the flex plate to torque conv -  5/16" - 24 x 7/16" bolts?  The closest I can find at the hardware store is 5/16"-24 x 1/2" ?

[GreenMachine]

I wouldn't use harware store bolts for that. They have thin heads for clearance reasons. They're available from alot of sources: Mancini Racing, 440 Source, Ebay, etc.

[Fast_68_440]

I am looking on year ones website as I am ordering some other parts, I was wondering if either of these are the flex plate to torque converter bolts?  I have included the part number if someone can verify which ones I need? 

Year one part number TC1073  and ARP2002903

Which ones are the correct bolts?  If I am off can someone show me a link for the correct ones?  Thanks

[john108]

The ARP2002903 are 7/16-20 for the crank to flex plate.
Call Summit.  I think they can tell you what you need.
1-800-230-3030

[gtx6970]

Where can I find the flex plate to torque conv -  5/16" - 24 x 7/16" bolts?  The closest I can find at the hardware store is 5/16"-24 x 1/2" ?

still avail at any mopar dealership

part number is - 1949765