1.5" is probably ok...if it were my car, I would just keep an eye on it...I don't believe the tailpipes are over 500F that far down the system
Yeah I didn't think so either lol. From what I can find, that parts store fuel hose is only rated for like 125-150F. If my diff fluid is venting out into the hose I figure it will be hotter than that. I may try to get some rubber line that is for higher temps.
1994 Mustang Cobra #662,347 Stroker,AFR Heads,Trickflow Intake,Anderson Cam,LT Headers,Flowmaster
TR-3550,Centerforce Clutch,31 Spline Axles,42lb Injectors,90mm MAF,SCT Tune
Steeda Suspension,FLSFC,Edelbrock Shocks,18x9.5 Forgestar CF5,Hankook RS3 Tires
Dyno'd @ 366rwhp 378ft/lbs