J1978

Wondering if anyone knows what bolt pattern I should go w/. Looking to get rally rims.
wanting to put new wheels/ tires on my 88.
any help thanks

1978 delta 88

rocketraider

If it's a 350 car without HD suspension it has a 4-3/4" bolt circle and wheels from a Cutlass or other GM A-body or God forbid Chevy Rally will fit.

If it's a factory 403 car, or 350 with HD suspension it has a 5" bolt circle. Not many factory 5x5 sporty wheels available. Buicks and GM trucks had them, and Olds offered SSIV Polycast and N82 Chrome Wheel Option in the 70s.

J1978

@rocketraider It’s originaly a diesel 5.7L I got it swapped for a Chevy 5.7L 350 SB

rocketraider

I can't swear to Diesel cars but I think they had 5x5. Joe Padavano will know for sure.

J1978

Ok thanks for the help anyways.
I am also wanting to install a new dual exhaust system and put 2 flow master super 10. Muffler
i basically am wanting a sporty look/sound
think about putting some rally rims on her.

joe_padavano

The easy way to tell is to look at the brakes. The regular-duty cars came with 10.75" front rotors and 9.5" rear drums. These have the 5 x 4.75" bolt pattern. The HD cars came with 12" front rotors and 11" rear drums and used the 5 x 5" bolt pattern.

J1978

Oh ok. Would you happen to know if I can possibly put 17” wheels on it?
and if so would I have to do any configurations involving the rotors or pads?

joe_padavano

The stock wheels were 15". Obviously anything larger will fit, assuming you get the correct bolt pattern, width, and offset. As for clearance, tire width and outside diameter also matter.

J1978

Ah ok any chance would you know about the manifolds sizes and specs? I’m gonna need a new exhaust system as well. And thank you all for the help!

llevine

where can i find window trim for this car and interior parts