Wanting to install a fuel pressure gauge and need to know what year my fuel rails are. My intake is a 85/86 but not sure about the other parts are . Thanks Steve

 

There should be a 170XXXXX number on one of the fuel rails for identification

 

not sure how you are adapting your pressure gauge but the schrader valve fitting is an -4

 

Why?
The thread on the schraeder valve where you install the gauge
is the same -4 AN on all TPI (inc Vette)

Easiest to install one of these -4AN gauge adapters (requires -4 cap to seal open end)
Russell #670290 or similar
R/R without removing the plenum ( unlike the 90 degree adapters )
and mounts any gauge with 1/8" NPT at right angles

 

I was looking in the street and performance book and they list one[fuel pressure gauge] for a 85/89 and another for 90/92. It looks like it mounts on the schraeder valve so I thought maybe there were different size for the different years. Thanks again Steve

 

Thanks I will go up to the shop and see if I can find any more # anywhere. Thanks Steve

 

I think on the 90-92 map there was a optional bracket used to make the gauge mounting more stable.

 

http://www.ebay.com/itm/Accel-DFI-74...d#ht_500wt_951

 

That sounds likely. I might call S&P and ask if there is any thing else with there mounting. Have you or anyone else you know ever tried one of the air foils they make for the throttle bodies. Was thinking about one of those also .

 

I would go with one of these, price is right.

http://www.ebay.com/itm/AIR-FOIL-THR...#ht_2730wt_936

 

Both of those look good and both cheaper than S&P Thanks again Steve

 

Same question asked every week.

https://www.thirdgen.org/forums/post...418-post9.html
https://www.thirdgen.org/forums/post...067-post5.html
https://www.thirdgen.org/forums/post...08-post13.html
http://www.corvetteforum.net/c3/zwed.../dynotests.htm