If I get rid of the 305 and replace it with a 350 how much of the TPI stuff can I reuse? Computer, Sensors, Wiring, injectors, throttle body, ect. I have an 85 IROC. All replys are greatly appricated.

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2E,87 Formula 350, 4 other Camaro's & 3 Firebirds to fix, Drive, or sell.

 

i dont have a TPI, but as far as i know you need larger injectors and a chip that will feed them - - i think the injectors for the 350 are like 5lb/hr more? not sure

[This message has been edited by mtx28 (edited December 12, 2000).]

 

[QUOTE]Originally posted by Coolcars:
[B]If I get rid of the 305 and replace it with a 350 how much of the TPI stuff can I reuse? Computer, Sensors, Wiring, injectors, throttle body, ect. I have an 85 IROC. All replys are greatly appricated.

Since the 350 wasn't offered in 85, you might want to consider getting an aftermarket chip that will agree with the 350 better. As far as injectors go, the 305's are 19 lbs. per hour, and the 350's are 22 lbs. per hour. You can probably get away with the 19lb. injectors if you install an adjustable fuel pressure regulator and increase your fuel pressure a bit, or you can get the 22lb. injectors. The chip and the injectors are the only parts that differ between 305 and 350 TPI setups.



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89RS w/350 TPI; 69RS/SS w/450 HP 350/Muncie 4-Speed "Too weird to live, too rare to die."

 

Check my sig. I could have kpet all my factory stuff, but I up graded everything but at the time I droped the 350 in I used all stock compnents other that SLP runners and a hypercrap chip hat was for the 305. It ran great. I have just kept inproving on it. Now all i need is a gear and some heads.

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86 Trans Am 355 TPI Rebuilt 700R4 with Corvette servo, modified valve body, and a B&M Torque Converter (2000 rpm stall w/ lock up), 87 350 block bored .30 with new crank, bearings, rings, and magnafluxed rods. Reworked 305 heads with 3-angle valve job. Added in the rebuild was an SLP TPI cam, BBK 58mm Throttle Body,SVO 24# injectors,MSD 6A, Hypertech Power Coil, 1.5 Crane roller tipped rocker arms, SLP Intake Runners and Port matching in upper intake including fully ported plenum, TPIS adjustable fuel pressure regulator @ 46psi, Hooker shorty style headers w/ Thermotech heat wrapping, Custom 3” exhaust with Flowmaster muffler and chrome quad tips, Hypertech Thermomaster Computer chip, K&N open element cone filter on modified MAF per TPIS specs, MSD Wires, removal of A/C hardware and a 1LE firewall cover installed. Also there has been a PST front suspension kit with Hotchkis strut tower brace
http://geocities.com/SunsetStrip/Garage/9548/kyle.html

Kills:
95 Talon TSI, 96 Probe GT, 91 T/A L98, 89 RS, 86 Mustang GT, 88 Mustang LX 5.0, 92 Thunderbird V8. couple or ricers that I think were Civics or Preludes not sure what year, 95 Celica GT-S, 94 Chevy 1/4 ton 350, one of those NASCAR F150's

 

i switched form a 305 to a 350 about 9 months ago. i re-used all the 305 stuff. i need to get a diff chip but it runs with the 305 chip just fine. as far as injectors go you can get away with the 19's but need to bump up the pressure,of course this depends on if it is a stock 350 or a modified one. i am switching to 24's though because i need more fuel.

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Brandon
"ScreaminDeamin 360"
350 60 over, TRW forged 9.83:1 pistons, crane cam 216/228 .484/.512, crane 1.6 RR's, ported plenum, home made ram air, 19 lb SVO injectors, crane AFPR

 

1st you need 22 pound injectors. 2nd send your memcal (chip) to tpiparts.net they will program the best version of the 350 offered from gm to the chip for $30.00. limp home mode will not work but who cares. get headers and afpr and hook it all up. expect the tpi to limit power to 250hp flywheel net. if you want more is gonna cost you hundreds of dollars more......

 

The 85 ECMs were pretty limited.
May want to consider upgrading the ECM to a 86-89. The "165" ecms are much faster and better supported for MAF systems.
If you're going with SD, the 730 ECM is what you need.

Do a search in the DIY Prom board for your 85 ecm.

 

i have brought a thread back from the dead lol.........