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#1 |
Registered User
Join Date: Nov 2012
Location: abingdon, Il
Posts: 29
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need a little help on a tpi swap
i have my 88 iroc z siting next to my truck and im wanting to do a swap into my truck as the camaro is wrecked the main thing im having problems figuring out is the fuel system id like to keep the in cab tank but not sure what to do to make it work with the tpi
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#2 |
Registered User
Join Date: Apr 2011
Location: Klein Texas
Posts: 3,852
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Re: need a little help on a tpi swap
I had a '72 that I put a TPI into.
It ran great. For the fuel pump I used an external one on the frame rail. It was something I got out of a european car in the junk yard. (VW I think). The return I ran back to the sending unit.
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My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe |
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#3 |
Registered User
Join Date: Nov 2012
Location: abingdon, Il
Posts: 29
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Re: need a little help on a tpi swap
you didnt need to pressurize the return line?
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#4 |
Registered User
Join Date: Mar 2013
Location: Marquette michigan
Posts: 828
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Re: need a little help on a tpi swap
Pressure regulator is on the fuel rail. Pump has more flow and pressure potential than what is needed so it's designed with this reserve in mind. So, the pump pushes all of this potential up to the injectors, then the regulator dumps the excess back to the tank. That way the injectors always have enough supply, because the regulator is on the return side. Tpi is good, but i will make a suggestion as i was a dealership mechanic for more years that i care to think of. Ok, here i go, your old tpi motor has definite value to a select crowd for originality sake, etc. Tpi was good for 250-300- horse power with issues of distributor behind water pump on some, carbon buildup on intake valves, extra horsepower potential, etc, Now don't get me wrong, they are good, but as a drivability guy i have a 2001 5.3 in my 68 c10. and i know which motor i would rather work on. I look at it this way, do your friends and neighbors complain of their late model trucks for power, fuel economy etc? probably not. Ok 5.3 stock 2001= 300 plus on 87 octane with 350-400 very cheaply attainable. Look at what you would spend to get 350 hp out of a tpi and 350 hp out of an ls? Tpi's don't like high rpms ls's do. Basically ls= new technology, tpi= prior technology. I'm not here to offend the tpi crowd because i almost did one in my 68c10, but i figured if i held out new things would have to improve. Good luch Brian F.
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#5 | |
Senior Member
![]() Join Date: Aug 2008
Location: Cedar Park, Texas
Posts: 7,496
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Re: need a little help on a tpi swap
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#6 |
Registered User
Join Date: Nov 2012
Location: abingdon, Il
Posts: 29
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Re: need a little help on a tpi swap
and what about the evap system for the fuel? and trust me id love to drop in a ls but im doing this on a tight budget and everyone wants an arm, leg, and your first born for an ls. im not looking for massive numbers its going to be my daily driver and as is the tpi has done me great i havent had anyone around here stick with me when it was in the iroc even with lazy 2.77 rear gear and thanks everyone for your help
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#7 | |
Senior Member
Join Date: Aug 2002
Location: Valley Center KS
Posts: 3,525
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Re: need a little help on a tpi swap
Quote:
Mine was a 72 also, so the sending unit had a fitting I used for the return line. I put a TBI engine in my 69 and that sending unit didn't have the 2nd fitting for a return line, so I swapped it out for a 72 unit. |
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#8 |
Senior Member
Join Date: Jan 2001
Location: Virginia Beach, Va, USA
Posts: 1,676
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Re: need a little help on a tpi swap
I know you stated you wanted to use the old tank. If a new motor, why not put the tank under the bed. Then more room in the cab. I got one from Rock Valley antique auto parts. Kinda pricey. Tanks that will work always seem to be on sale on this site. Anyways, I have supply and return lines in the tank and the fuel pump is in the tank also. I have it hooked up to an LT1.
Kerry
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1969 Chevelle 1990 IROC Z Convertible 2002 Silverado LT |
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#9 |
Registered User
Join Date: Apr 2011
Location: Klein Texas
Posts: 3,852
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Re: need a little help on a tpi swap
Vented gas cap?
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My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe |
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#10 |
Registered User
Join Date: Nov 2012
Location: abingdon, Il
Posts: 29
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Re: need a little help on a tpi swap
what about this for fuel pump
http://www.summitracing.com/parts/vpn-gsl392/overview/ i know the tpi needs 45 psi and this is 60 psi max it should be fine right? |
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#11 |
Registered User
Join Date: Apr 2011
Location: Klein Texas
Posts: 3,852
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Re: need a little help on a tpi swap
Looks to be the same pump I run on my VP-HO Cummins diesel.
![]() It should be fine.
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My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe |
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#12 |
Registered User
Join Date: Mar 2013
Location: Marquette michigan
Posts: 828
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Re: need a little help on a tpi swap
Hi, if you do the tpi, what trans was in the iroc? overdrive automatic? Remember that tpi's shine at probably 5'000rpm's and under with a good load of torque down low. What gear ratio in the truck? If it's a 3.73 or higher it will be fun down low but forget fuel economy. Just keep in mind the total package, use as much of the tpi as you can. What about speedo if using o/d auto? The truck is probably 600-800lbs heavier. You will be robbing the ecm, harness, etc from the iroc. If something would need to be programed, check and see who does it. This was the rage 20 years ago so i know the info is out there.
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#13 |
Registered User
Join Date: Nov 2012
Location: abingdon, Il
Posts: 29
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Re: need a little help on a tpi swap
yes im robbing the harness ecm trans from the iroc the truck has 3.23 rear gear and the trans is the 700r4 and right now im not super concerned with fuel economy and the weight differance is actually about 200lbs lol and i just really want my truck has been down for almost a year and i want it back on the road lol and im going to get the egr system going again as PO blocked it off and it sucked down the gas but doing time trials everywhere didnt help either
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#14 |
Registered User
Join Date: Nov 2012
Location: abingdon, Il
Posts: 29
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Re: need a little help on a tpi swap
bump
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#15 |
The Older Generation
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Location: Montezuma, Iowa
Posts: 25,476
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Re: need a little help on a tpi swap
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You can use your stock tank if you run a 1980 Datsun 280zx (Nissan) external Fuel pump, Available at Advance Auto Parts, p/n E8312.. $106.09. (online price) http://shop.advanceautoparts.com/web...lVehicle=false You don't have to run a return line to the tank, you just put a "T" in the line before the pump and it sucks it back into the fuel supply line. LockDoc
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Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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#16 |
Registered User
Join Date: Mar 2013
Location: In the rain
Posts: 17
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Re: need a little help on a tpi swap
I would pull your tank on the camaro and rob the whole assembly out of it, then dissect it. You can probably make it work in your tank with little work. They are not complete units like the newer one from the 90s on up are. You can pull the pump itself out of the whole unit if you want. Remember, in tank units are more expensive, and more work to get installed. But in your case you already have one that could work. But the non in-tank pumps never last as long.
TPI was a good setup, up to about 4500 when it fell on its face. But great for a street car. Good power, yet decent mileage. After the "free mods" on the tpi setup, headers and exhaust, better air flow intake, and an msd ignition, I could average 28mpg on the highway with my 89. Thats a 350, 700r4, and 3.23 rear. |
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#17 | |
Kill Bill...et
Join Date: Aug 2008
Location: Winchestertonfieldville, Wa
Posts: 366
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Re: need a little help on a tpi swap
Quote:
Last edited by stevencvn72; 09-25-2013 at 08:18 PM. |
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#18 | |
Registered User
Join Date: Nov 2012
Location: abingdon, Il
Posts: 29
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Re: need a little help on a tpi swap
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#19 |
Registered User
Join Date: Nov 2012
Location: abingdon, Il
Posts: 29
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Re: need a little help on a tpi swap
the engine is in good running condition along with the trans and i have the o2 sensor from the camaro and the wiring harness
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#20 |
Registered User
Join Date: Jan 2011
Location: Chattanooga, TN
Posts: 2,148
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Re: need a little help on a tpi swap
Well, put it in. It will bolt in. Use Truck manifolds or headers. Plumb in the fuel system-replace any regular hose with FI hose. It is really not that complicated once you get into it.
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'83 K20-TPI '73 C10 '79 C10-ex-diesel(SOLD) '07 Tahoe(Son driving) '14 Suburban-DD '71 C10-current project |
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#21 | ||
Registered User
Join Date: Sep 2009
Location: Weare,NH
Posts: 1,592
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Re: need a little help on a tpi swap
http://ls1tech.com/forums/17059521-post145.html
Quote:
Quote:
Also, Chevythunder.com is an excellent resource for swaps. That, and the TPI section of thirdgen.org
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Eric 1992 Oldsmobile Custom Cruiser 1986 Chevrolet C10|5.3L|TKO600|Shortbed|Custom Deluxe 1983 Malibu Wagon|TPI 305|T5 5 speed|3.73 non-posi Last edited by MalibuSSwagon; 05-29-2013 at 12:45 PM. |
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#22 |
Registered User
Join Date: Nov 2012
Location: abingdon, Il
Posts: 29
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Re: need a little help on a tpi swap
is there a way to use a mechanical fuel pump with the tpi set up?
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#23 |
Registered User
Join Date: Mar 2013
Location: In the rain
Posts: 17
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Re: need a little help on a tpi swap
If you are talking about the factory style on the engine, no, not enough pressure.
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#24 |
Registered User
Join Date: Nov 2012
Location: abingdon, Il
Posts: 29
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Re: need a little help on a tpi swap
okay im just trying to figure out how to get the fuel out of the tank to the electric inline pump then
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#25 |
Registered User
Join Date: Jan 2011
Location: Chattanooga, TN
Posts: 2,148
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Re: need a little help on a tpi swap
Use a low pressure electric "kicker" pump. Have the little pump outlet supply the high pressure pump inlet.
__________________
'83 K20-TPI '73 C10 '79 C10-ex-diesel(SOLD) '07 Tahoe(Son driving) '14 Suburban-DD '71 C10-current project |
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