AC Delco 170 thermostat? Part Number?
Thread Starter
Junior Member
Joined: Apr 2009
Posts: 24
Likes: 0
Car: 1989 camaro iroc-z28
Engine: 5.7L 350 TPI
Transmission: 700R4-shift kit, moderate stall
Axle/Gears: 3.27 Borg Warner
AC Delco 170 thermostat? Part Number?
Howdy,
I am having a little trouble keeping my temp down(230-240) in a new rebuilt vortec block with stock heads and a small cam. the cooling system is brand new w/ 195 t-stat, the temp spikes to 240 then drops to 220, or it jumps to 230 from the beginning and holds steady. I was told by a tech to look into an AC Delco 170 t-stat, and then drill some 1/8" holes into it. He said considering the motor is putting out a little more hp that it may be running hotter. The EGR valve failure did pop up when we ran the codes but that could be from the temp getting higher than normal. it is a brand new EGR so that surely cant be screwed up already. i'm rolling on 450 miles on this motor and need to get it figured out. Overall I am looking for the part number for this ACDELCO t-stat to make sure the idiots at GM know which one i'm talking about. i've got GM PN#12514334 and AC PN#131-87
Thanks and Gig'em!!!
I am having a little trouble keeping my temp down(230-240) in a new rebuilt vortec block with stock heads and a small cam. the cooling system is brand new w/ 195 t-stat, the temp spikes to 240 then drops to 220, or it jumps to 230 from the beginning and holds steady. I was told by a tech to look into an AC Delco 170 t-stat, and then drill some 1/8" holes into it. He said considering the motor is putting out a little more hp that it may be running hotter. The EGR valve failure did pop up when we ran the codes but that could be from the temp getting higher than normal. it is a brand new EGR so that surely cant be screwed up already. i'm rolling on 450 miles on this motor and need to get it figured out. Overall I am looking for the part number for this ACDELCO t-stat to make sure the idiots at GM know which one i'm talking about. i've got GM PN#12514334 and AC PN#131-87
Thanks and Gig'em!!!
Joined: Dec 2004
Posts: 16,754
Likes: 996
From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: AC Delco 170 thermostat? Part Number?
AC Delco part number 10220957 , 131-84
Supreme Member
iTrader: (1)
Joined: Mar 2007
Posts: 3,525
Likes: 7
From: Arlington, Tx
Car: 91 Camaro RS
Engine: empty bay (for now)
Transmission: Built T-56
Axle/Gears: 3.42 stock posi disc
Re: AC Delco 170 thermostat? Part Number?
do you have the airdam installed under the car, and how big of a fan are you running?
Thread
Thread Starter
Forum
Replies
Last Post
1992 Trans Am
History / Originality
27
May 10, 2023 07:19 PM
IrocZ'85
Engine/Drivetrain/Suspension Parts for Sale
0
Aug 17, 2015 06:24 PM
