Is it necessary to coat the SLPs being that they are stainless steel? The reason I ask, is that after buying the headers, I won't have the money to coat them. I have the money to buy the SLPs from the GP and leave them uncoated, or Edelbrocks and coat them. Which is the best way to go? Also, I'm thinking of getting the 1 3/4, but my car is mostly stock. Should that make it a 1 5/8 application? Lastly, how much HP and TQ am I gaining in adding the headers to what's listed in my sig? Thanks.

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91 TA 5.7 TPI Automatic.
w/WS6 and 3.23 rear.
K&N Air Filter,Hypertech Coil,Moroso Blue Max Wires, Bosch Platinum plugs gapped at .050,
JET fan switch,JET air foil,Dual cats with Flowmaster 3" exhaust (Headers coming soon),GM Performance PROM, Complete PST components on front suspension, Spohn LCAs/Panhard bar.
My car only uses Mobil 1 transmission fluid, oil, and differential fluid.

 

get the 1-3/4 if you can. "need" is a relative term. They won't rust, so you'd only "need" to coat them to keep up show apearances, to keep the exaust extra hot to help expell them quicky, to maybe keep the underhood temps down a bit.

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-Tas
'89 Formula WS-6

305, TBI, auto, 14x3 chrome flat based open element with K&N, Milodon 160* thermo, functional Formula hood, cross-flow Flowmaster, '99z28 rear pipes and tips....

To be installed eventually far far far into the future: Yours if the price is right and I don't have to ship :
Hooker 1-5/8" 50 state legal headers, Dynomax 3" I pipe (PN 44063 and 43248), Catco 3" cat, and injector spacer.

Super GRK_Taz World
F-Body Dual Exaust
EFI & Intake Options
AOL IM: superGRtaz



Got Beach?

 

Definitely get the SLP headers. You dont have to coat them because they are stainless steel.
You should see a 15-25 HP gain at the rear wheels after installing them.

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1991 Camaro Z28
5.7L 5-Speed (originally 305)
317 RWHP, 418 RWTQ
13.23 @ 107.62 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Member: SoCal F-Bodies
-=ICON Motorsports=-

 

Kevin, do you agree that I should get the 1 3/4?

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91 TA 5.7 TPI Automatic.
w/WS6 and 3.23 rear.
K&N Air Filter,Hypertech Coil,Moroso Blue Max Wires, Bosch Platinum plugs gapped at .050,
JET fan switch,JET air foil,Dual cats with Flowmaster 3" exhaust (Headers coming soon),GM Performance PROM, Complete PST components on front suspension, Spohn LCAs/Panhard bar.
My car only uses Mobil 1 transmission fluid, oil, and differential fluid.

 

I know I agree, the general rule is that you get 1 3/4" headers with a 350.

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'86 IROC 5-speed
305 LG4
edelbrock performer rpm intake
edelbrock 600 cfm carb
msd pro billet hei distributer
'95 3.23 rearend
hotchkis rear suspension
PST front polygraphite suspension
"speed kills. buy a f@&d, live forever."

 

i put a set of 1 3/4 slp's on a buddies gta, and the power gain was awesome, but they weren't coated, and his underhood temps sky rocketed. the plastic was melting on sensors, we had to be extremely careful of all of the wiring- this can't be good. it makes me weary of putting uncoated headers on my camaro.

 

Yes, SLP 1 3/4" headers on an L98 350 or larger engine. I have no problems with mine being uncoated and underhood temps.

If your car is running lean or if you have too much timing, it will run hotter.