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v6 2.8 to a 350 swap questions?

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Old Dec 14, 2004 | 04:59 PM
  #1  
kileschilke4's Avatar
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From: Hutch, KS
Car: Firebird 1987
Engine: 350 sbc chevy
Transmission: Turbo 350
v6 2.8 to a 350 swap questions?

Hello everyone I am doing an engine swap hopefully with christmas money and some mone i've managed to scrape together, i wanted to ask you what i would absolutley need to change if i did the swap, i am not really looking for horsepower right now just an upgrade do to the little money i've got, i just want to pickup the little horsepower upgrades as i go, could you tell me the must haves to complete this swap?
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Old Dec 15, 2004 | 03:37 AM
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From: Moberly Missouri
Car: 1985 Firebird
Engine: 3.1L (planning for a turbo)
Transmission: 700R4
Axle/Gears: 3.42
This is the best place to start

https://www.thirdgen.org/techbb2/sho...hreadid=229665

I'm in the begging states of this same swap. (trying to find a 350 so I dont have to use a 305 a friend of mine has..)
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Old Dec 15, 2004 | 04:41 AM
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kevinc's Avatar
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Car: 1982 Z28
Engine: LS1
Transmission: T56
Re: v6 2.8 to a 350 swap questions?

Originally posted by kileschilke4
Hello everyone I am doing an engine swap hopefully with christmas money and some mone i've managed to scrape together, i wanted to ask you what i would absolutley need to change if i did the swap
You would absolutely need to read and search and read some more. This comes up at least monthly and there's lots of good info here.
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Old Dec 15, 2004 | 08:14 AM
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kileschilke4's Avatar
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From: Hutch, KS
Car: Firebird 1987
Engine: 350 sbc chevy
Transmission: Turbo 350
Transmission Questions

I've done some searching and i read through five7kids thread but i've ran into a problem will a 350 carberated engine bold up to my v6 tranny i have now, or will i just have to change bellhousing?
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Old Dec 15, 2004 | 03:14 PM
  #5  
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Car: 1982 Z28
Engine: LS1
Transmission: T56
Re: Transmission Questions

Originally posted by kileschilke4
I've done some searching and i read through five7kids thread but i've ran into a problem will a 350 carberated engine bold up to my v6 tranny i have now, or will i just have to change bellhousing?
No, and the bellhousings aren't changeable on either the trans or the engine. I'd start shopping for used F-body TH700R4 transmissions.
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Old Dec 15, 2004 | 03:16 PM
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Car: 1991 RS Camaro (Jet Black)
Engine: 95 383 CI (6.3) LT1
Transmission: 95 T-56
If you have a v6 T-5, yes it will bolt to a v8 bellhousing, but you will need to use a different clutch setup because the V6 t-5s used a higher spline count I believe.
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Old Dec 15, 2004 | 04:39 PM
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From: Hutch, KS
Car: Firebird 1987
Engine: 350 sbc chevy
Transmission: Turbo 350
another important subject, exhaust and headers, everyone here suggested to me to get american thunder flowmaster exhaust, with slp headers, would this be a good exhaust system?
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Old Dec 15, 2004 | 04:51 PM
  #8  
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Car: 1991 RS Camaro (Jet Black)
Engine: 95 383 CI (6.3) LT1
Transmission: 95 T-56
SLP headers, yes. I'd go with something other than a flowmaster. Not a lot of people like the sound and their but if your one of them go for it. Theres a lot better flowing exhaust systems out there for the same price. I recommend the hooker.
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Old Dec 15, 2004 | 04:56 PM
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From: Hutch, KS
Car: Firebird 1987
Engine: 350 sbc chevy
Transmission: Turbo 350
In response to the transmission problem what kind of clutch setup would i need, how much would it cost, and where could i get it?
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Old Dec 15, 2004 | 05:05 PM
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Car: 1991 RS Camaro (Jet Black)
Engine: 95 383 CI (6.3) LT1
Transmission: 95 T-56
Need a S10 setup, the largest diameter one available. As far as cost and where to get it, not sure, im pretty sure any auto chain store can order it if they dont have it.
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Old Dec 15, 2004 | 05:08 PM
  #11  
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From: Hutch, KS
Car: Firebird 1987
Engine: 350 sbc chevy
Transmission: Turbo 350
for the time being could i leave the transmission and clutch as is for budgeting sake, or will it not be driveable or cause major problems?
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Old Dec 15, 2004 | 05:27 PM
  #12  
KiLLJ0Y
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only go with SLP if you are buying the 1 3/4 headers. dont waste money on the 1 5/8 SLPs when you can get Hooker 2055's for a lot less.

i used my old WC T-5 on my 350 V8, just get a V8 T-5 Bellhousing from a V8 Camaro that had the T-5 and you should be OK.


for best prices, go to www.Autozone.com they are pretty reasonable if you need things on a budget.
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Old Dec 15, 2004 | 06:14 PM
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From: Hutch, KS
Car: Firebird 1987
Engine: 350 sbc chevy
Transmission: Turbo 350
as far as my radiator goes will i need to be changing that anytime soon or can i leave it for the time beaing?
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Old Dec 16, 2004 | 10:44 AM
  #14  
KiLLJ0Y
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unless it has a hole or is rusted and crappy.. then leave it, change it at a later time.. but before you install it.. why not give it a good flush
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Old Dec 16, 2004 | 12:12 PM
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Your car is an 87, like mine was. What side does the top radiator hose come out of? If it comes from the passenger side, you are going to need a different radiator.
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Old Dec 16, 2004 | 02:34 PM
  #16  
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Car: 1991 RS Camaro (Jet Black)
Engine: 95 383 CI (6.3) LT1
Transmission: 95 T-56
Originally posted by ljnowell
Your car is an 87, like mine was. What side does the top radiator hose come out of? If it comes from the passenger side, you are going to need a different radiator.
Correct, the 2.8's came with the radiator outlets on the opposite side (top on passenger, bottom on driver), the 3.1's came with a v8 radiator which was the opposite, either grab a v8 radiator or one off a 91-92 3.1.
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Old Dec 16, 2004 | 02:44 PM
  #17  
KiLLJ0Y
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whoops.. my fault.. CHANGE IT CHANGE IT
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Old Dec 16, 2004 | 03:52 PM
  #18  
kileschilke4's Avatar
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From: Hutch, KS
Car: Firebird 1987
Engine: 350 sbc chevy
Transmission: Turbo 350
well guys i officialy purchased my carberated 350 out of an old suburban its got 94,000 on it but i only payed 300 for it is that a bad buy?:
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Old Dec 16, 2004 | 04:40 PM
  #19  
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Car: 1991 RS Camaro (Jet Black)
Engine: 95 383 CI (6.3) LT1
Transmission: 95 T-56
Sounds fair.
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Old Dec 16, 2004 | 04:55 PM
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From: Long Neck, De
Car: 2002 SS
Engine: Ls1
Transmission: T56
Axle/Gears: 3:42 posi
2.8 to 350 here also .. getting everything i need together also
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Old Dec 16, 2004 | 06:16 PM
  #21  
KiLLJ0Y
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what year Suburban?

96-99 were called vortec. (2000+ are still vortec but LS1 style)

91-95 were TBI's

not sure about the rest.

you might want to change the cam in that, find out what CC the heads are, i would assume 76cc
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Old Dec 16, 2004 | 06:54 PM
  #22  
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Car: 1991 RS Camaro (Jet Black)
Engine: 95 383 CI (6.3) LT1
Transmission: 95 T-56
Most likely its a TBI, but for $300, i'd still say thats a good deal. You can grab l98 heads off ebay for $200, a cam and springs for $250. Have a nice setup there with a good carb.
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Old Dec 16, 2004 | 07:25 PM
  #23  
kileschilke4's Avatar
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From: Hutch, KS
Car: Firebird 1987
Engine: 350 sbc chevy
Transmission: Turbo 350
i read the thread about the carb part, my friend said he would sell me his holley 650 for 120 dollars its used but its in great condition should i proceed with that purchase?
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Old Dec 17, 2004 | 09:00 AM
  #24  
kileschilke4's Avatar
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From: Hutch, KS
Car: Firebird 1987
Engine: 350 sbc chevy
Transmission: Turbo 350
Well the shock has set in i went to start the motor out of the suburban and it knocks, and smokes really bad, i think its the piston rings although i'm not sure, the guy gave me my money back and took the motor back, now i'm down to very few choices i could buy a 305 for 200 dollars which is better then the 2.8, should i buy the motor, and more importantly does it have potential to be fast?
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Old Dec 17, 2004 | 10:26 AM
  #25  
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From: Elkton MD USA
Car: 1983, 1986
Engine: 2.8 2bbl, 2.8 MPFI
Transmission: 200C 3 speed, 700R4
Axle/Gears: 3.08, 3.42
A 305 has the potential to be fast. It will be faster than the 2.8 even in stock form. However, a 350 will be more powerful than the 305 (given the same modifications).

If you don't need the car right away, I'd wait on the 350. The right one will show up.
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Old Dec 17, 2004 | 12:46 PM
  #26  
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Car: 1991 RS Camaro (Jet Black)
Engine: 95 383 CI (6.3) LT1
Transmission: 95 T-56
If you want fast, wait it out for the 350. It will get you faster much cheaper.
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Old Dec 17, 2004 | 01:27 PM
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_

Last edited by anondude13; Feb 16, 2009 at 11:39 PM.
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Old Dec 22, 2004 | 10:29 PM
  #28  
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From: Moberly Missouri
Car: 1985 Firebird
Engine: 3.1L (planning for a turbo)
Transmission: 700R4
Axle/Gears: 3.42
Have you tryed calling around local junkyards? I'm sure you could find a 350 or even a small block 400 that could be rebuilt and be a very nice motor. (i've got a guy I'm buying a 350 out a 75 chevy pickup from for 150$, its never been bored or any thing)
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Old Dec 26, 2004 | 11:37 AM
  #29  
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From: Miami, Florida
Car: 1992 Camaro RS
Engine: 3.1L V6
Transmission: Auto
Originally posted by DemonKnightDK
Have you tryed calling around local junkyards? I'm sure you could find a 350 or even a small block 400 that could be rebuilt and be a very nice motor. (i've got a guy I'm buying a 350 out a 75 chevy pickup from for 150$, its never been bored or any thing)
How much would it cost to get someone to rebuild the engine, I'd do it but I really don't know how, and wouldn't want to **** up my car because I'm an idiot.
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