tpi cam replacement
06-06-2021, 11:46 AM
#1
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Car: 88 GTA Notch/01'WS-6 VERT
Engine: 5.0 LB-9/5.7 LS-1
Transmission: 700R-4/4L60
Axle/Gears: borg warner 3.27's
tpi cam replacement
hello all, anyone have a suggestion on a cam replacement for a stock 91 350 tpi tia!
06-06-2021, 12:30 PM
#2
Re: tpi cam replacement
Are you planning on changing only the cam, or modifying the entire valve train? Are you planning on a PROM change for the ECM? Those variables might dictate your range of choices.
06-06-2021, 02:38 PM
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Car: 88 GTA Notch/01'WS-6 VERT
Engine: 5.0 LB-9/5.7 LS-1
Transmission: 700R-4/4L60
Axle/Gears: borg warner 3.27's
Re: tpi cam replacement
I would like to change just the cam and lifters with something suitable for stock not looking to have a chip burned for the ECM or upgrade the valve train
06-06-2021, 02:53 PM
#4
Re: tpi cam replacement
With a MAF car you could probably get away without tuning if the cam upgrade is mild. Suggest something like a ZZ4 cam. 208/221 @.050 on a 112 LSA. It'll idle and drive like stock, but give a nice power increase that will still be well matched to a TPI engine.
06-06-2021, 07:23 PM
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Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: tpi cam replacement
Just put one of these in a friends 91 formula 350. I really like it. I don't remember using the older cam chain sprocket but maybe we did. I'd see if you can have it made with the correct roller cam bolt pattern.
Super L98 Hyd. Roller Camshaft (EST. SHIP TIME 8-10 WEEKS) – TPiS (TPI Specialties)
Super L98 Hyd. Roller Camshaft (EST. SHIP TIME 8-10 WEEKS) – TPiS (TPI Specialties)
06-06-2021, 08:37 PM
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Car: 89 Firebird
Engine: 355 TBI
Transmission: 700R4
Axle/Gears: 10 Bolt.Posi-3.73s
Re: tpi cam replacement
GM has one. 214-220 duration and a lil more lift than stock and it's only $100. Copy of the old 2032 cam. 9446 I think. I've read a lot of folks like it and shouldn't be too far out there on the tune. Stock 91-92 cam is what 202-207 duration? Got to be a bit of an upgrade.
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