I have a 1990 5.0 TBI, I want to get Edelbrock Headers and I was looking at the ones made for the TBI but they only have a 2.25" inlet. I was wondering if the headers that are made for the TPI with the 3" inlet would fit on my car because i want to change the cat. with a Catco, and the cat-back with a 3" Flowmaster system. THANKS for the help

1990 RS 5.0E

 

Yeah they should work.

I used the Edelbrock headers for a 350 TPI car on my carbed 350 (originally an LG4). They went on just fine.

 

Get them coated or get SLP stainless steel. The Edelbrocks rust pretty badly over time. I went through 2 sets on 2 cars...

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'92 RS, ZZ4/LO5 10:1 350, Edelbrock 6085 heads, Crane 208/214* 467/482" 112* cam, GM/LT4 1.6 roller rockers, Edelbrock Hi-Flow TPI base, runners & 52mm TB, Accel 24#, SLP/Jet-Hot 1-5/8" headers, Catco 3" cat, Flowmaster 3" catback, Hughes 2500 stall converter, stock 700R4, 1LE driveshaft, SFC, Auburn Pro posi w/3.42, 17x9" ZR1 rims w/BFG tires, Medium Quasar Blue w/white SS stripes, Zaino...

 

My TES Headers are 2 years old and without coating and they are in great shape, so coating isn't a must and neither is spending an arm and leg on the SLPs. But yes, if you order a full 3" system it will work, the mountings are all the same.

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1987 Chevy Camaro IROC-Z
L98 TPI 350 (5.7L)
TH 700R-4 Transmission
Borg Warner 7.75" 9 Bolt Rear End with 2.77:1 Gears.

Current Mods: LT4 HOT Cam, Comp Cams 1.52:1 Roller Rocker Arms, LPE High Flow TPI Baseplate, Edelbrock TES 1 5/8" Headers, Catco 3" High-Flow Catalytic Converter, Hooker 3" Aerochamber Cat-Back System, Transgo Shift Kit, Performance Resource Chip, Accel Ignition, K&N Filters, JET TPI Air Foil, All Free Mods, Falken ZIEX Z-Rated Tires.

Best ET: 14.32 @ 97.7mph
(corrected for elevation)