78 Cutlass factory 305 to 71 455 olds

[olds307 and 403]

The 200 & 229 V6's used the A6 compressor. I chucked mine about 25 years ago.

Good to know. I wonder what year they switched and if those lines are available?

 

[oldsmobile joe]

my 78 salon with an olds 260 came from the factory with an a6 compressor. manifold line is not available. but a custom one can be made.

 

[olds307 and 403]

my 78 salon with an olds 260 came from the factory with an a6 compressor. manifold line is not available. but a custom one can be made.

It must have been a changeover year, probably using up old stock. Now to either get that line to copy or take it to a shop where they make a line to fill the gap. I would also do some cutting on the rad support and get a 33" wide A body rad or if possible the one you already have. I got my 70 rad in by cutting but still ran warm, it is only a 2 core Copper brass, no issue in my 70S, 195 max without a shroud. I am adding a better air deflector and the GN rad surround flaps. Hopefully this will fix my hot running once and for all, has plagued my 88 since day one.

 

[Carolinadoublej]

The original 305 fuel pump has two lines to it, whereas the olds 455 fuel pump has 3 lines... am I needing to run a new line back to tank? I imagine that I need a sending unit or gas tank from an olds powered too, right?

 

[olds307 and 403]

You can block off that line or buy the two line pump for any non A/C Olds V8.

 

[Carolinadoublej]

You can block off that line or buy the two line pump for any non A/C Olds V8.

Thank you.

 

[olds307 and 403]

I have had good luck with their 2 and 3 line pumps. https://www.summitracing.com/parts/crt-m4871

 

[L92 OLDS]

Pretty sure all G bodies came with the R4 compressors. You could get a modern Sanden compressor that fits the old style brackets with custom lines to fit your car.

I highly recommend this. The Sanden compressors are a well engineered piece and from my experience ALL R4 compressors leak oil and freon.

 

[olds307 and 403]

I highly recommend this. The Sanden compressors are a well engineered piece and from my experience ALL R4 compressors leak oil and freon.

Agree, they are all junk and eventually fail. We used to grab any used ones out on the junk vehicles my boss had that didn't make noise, a lot did and throw them in with leak seal and a recharge. As said, usually leaked oil or freon and usually seized, sometimes with no warning. After pulling the clutch and pulley off one, I would never touch one again.

 

[Carolinadoublej]

I’ve been looking at several aluminum radiators on eBay and elsewhere... speed_daddy radiators & Champion radiators...anything from 2 12” fans to 1 16” fan, 2 core, 3 core etc. I’ve also looked at finding an aluminum one from an A body to fit in my Gbody... not quite sure which way to go yet. May look at the Gbody store that I’ve seen mentioned too. It’s something that I’d Ike to do right the first time but also within a $300 budget. Are the electric fans that much more beneficial?