i have a motown 400 bore with 350 mains and i bought the gm windage tray. looking thru summit they list a arp windage tray stud kit for a 4 bolt block 350 and a dif one for a 4bolt block 400.

is the set for the 400 just longer studs to clearance the cranks longer stroke?

thanks
rick

yup, buy the 400 studs

thanks smile.gif

going through this with my BBC right now.
The 400s are different, and they also make 2 different sets for 400s.

Here is a link with part numbers.

http://www.arp-bolts.com/media/pdf_files/mainstud.pdf

Good luck.

i dont tink i can use any of those listed becuse my mains have 1/2" bolts. i just emailed arp direct and ill post what they said back wheni get an email. for peoples further reference

On my 2 bolt 400 I'm not going to be able to use the windage try. The H-beam rods stick up higher than the studs do. Jegs said it is a 50/50.

that has me a bit worried :( i guess all i can do is buy the studs and hope the crank/rods clearance