84 IROC TPI V8 - good engine? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

CochinoFilipino · 02-25-2006, 09:23 PM

I have a lead on a SWB C10 with an 84 IROC TPI V8 and 700R trans.

Are these good engines and fuel systems?

454_72_4X4 · 02-25-2006, 09:54 PM

The TPI is a good setup but the 1st year for them was 85.

CochinoFilipino · 02-25-2006, 10:35 PM

The seller must be confused on the year. It's definitely not carbed.

Did camaro go from carburators in 84 to TPI in 85 or was there some TBI's in between?

Thanks

**N2TRUX** · 02-25-2006, 11:34 PM

Quote:

Originally Posted by CochinoFilpino

Did camaro go from carburators in 84 to TPI in 85 or was there some TBI's in between?

That is correct. The V-8 Camaro was carbed in 84 and the highest trim level was a Z-28. In 85 they had a tuned port 305 and the IROC was introduced.

454_72_4X4 · 02-26-2006, 01:07 AM

Quote:

Originally Posted by CochinoFilpino

The seller must be confused on the year. It's definitely not carbed.

Did camaro go from carburators in 84 to TPI in 85 or was there some TBI's in between?

Thanks

Quote:

Originally Posted by N2TRUX

That is correct. The V-8 Camaro was carbed in 84 and the highest trim level was a Z-28. In 85 they had a tuned port 305 and the IROC was introduced.

There were some TBI Camaros in the mix also.
I don't know when they started or ended with the TBI but I know there were some up until the early 90's, at least.

The 85 TPI system was a unique computer system too. Not very desirable I guess.

Then there's the Mass Air Flow systems and the Speed Density systems.
MAF = 85-89
SD = 90-92

Tropical Snowstorm · 02-26-2006, 02:44 AM

85 was the first year for TPI Camaros. The TBI started in 87 on the base models, but crossfire (two TBI units) was in 82-84 Z28s as an option. 85 had it's own computer (also in 84 Vettes) and 86-89 were MAF, 90-92 were MAP/speed density. So it may be an 84 TPI from a Vette.

**N2TRUX** · 02-27-2006, 09:03 PM

Quote:

Originally Posted by Tropical Snowstorm

...The TBI started in 87 on the base models, but crossfire (two TBI units) was in 82-84 Z28s as an option.....

Ok, I may be wrong but I''m pretty sure Crossfire was 82-83 only. We have an 84 H.O. Z-28 that my wife bought new, and I don't remember that being an option.

CochinoFilipino · 02-27-2006, 03:19 PM

Well here it is. I had no luck finding a SWB so I put a wanted ad up. I got one bite and picked it up yesterday.

I'll be fixing the ugly stuff this summer.

[EDIT] I deleted some pics, including the one of the uglyside. My Geocities usage was being exceded and some of you were getting the Red X.

Musclerodz · 02-27-2006, 03:28 PM

Am I mistaken or did the centerbolt head motor come out in '88 when they also changed to a one piece rear seal? The '84 Vette was a Crossfire motor, not TPI either.

Mike

mocwon · 02-27-2006, 06:30 PM

Do you mean center bolt valve covers? If so, I believe the first year was '87.

Quote:

Originally Posted by Musclerodz

Am I mistaken or did the centerbolt head motor come out in '88 when they also changed to a one piece rear seal? The '84 Vette was a Crossfire motor, not TPI either.

Mike

CochinoFilipino · 02-27-2006, 08:25 PM

Quote:

Originally Posted by mocwon

Do you mean center bolt valve covers? If so, I believe the first year was '87.

So you guys are saying that this is probably at least an 87 or later engine?

**71swb4x4** · 02-27-2006, 08:28 PM

Quote:

Originally Posted by CochinoFilipino

So you guys are saying that this is probably at least an 87 or later engine?

87 or later heads. Doesn't necessarily mean the engine is, you will have to decode it.

71SWBChevy · 02-27-2006, 07:25 PM

Sweet looking truck man, you should have never shown us the drivers side!

LONGHAIR · 02-27-2006, 08:04 PM

The one piece rear main started in '86

CochinoFilipino · 02-27-2006, 08:24 PM

Quote:

Originally Posted by 71SWBChevy

Sweet looking truck man, you should have never shown us the drivers side!

Hopefully, That'll all be fixed this summer.

And I did think about not posting the ugly side.

CochinoFilipino · 02-27-2006, 09:23 PM

Are there any headers that will fit my application?

Tx Firefighter · 02-27-2006, 11:01 PM

Any normal SBC headers for a 67-72 truck will work. You will need to keep an O2 sensor bung though. You can buy the bung seperately and weld it into the new headers if you need to.

72MARIO · 02-28-2006, 11:38 AM

Nice looking Stepper. I love the rims.

02-25-2006, 09:23 PM	#1
CochinoFilipino Registered User Join Date: Feb 2006 Location: Republic of California Posts: 345	84 IROC TPI V8 - good engine? I have a lead on a SWB C10 with an 84 IROC TPI V8 and 700R trans. Are these good engines and fuel systems? __________________ '67 C10 Short Stepside 5.0TPI/700R4

02-25-2006, 09:54 PM	#2
454_72_4X4 Registered User Join Date: Apr 2004 Location: N.E. MO Posts: 1,749	Re: 84 IROC TPI V8 - good engine? The TPI is a good setup but the 1st year for them was 85. __________________ 72 C20 4X4 454 4 speed 89 Trans Am (was) 305 TPI 700r4 93 C1500 2wd Extended cab 350 700r4 98 Sonoma (TPI outa the Trans Am) 03 Yamaha 660 Raptor 03/04 660 Raptor 07 700 Raptor 85 Honda Odyssey

02-25-2006, 10:35 PM	#3
CochinoFilipino Registered User Join Date: Feb 2006 Location: Republic of California Posts: 345	Re: 84 IROC TPI V8 - good engine? The seller must be confused on the year. It's definitely not carbed. Did camaro go from carburators in 84 to TPI in 85 or was there some TBI's in between? Thanks __________________ '67 C10 Short Stepside 5.0TPI/700R4

02-26-2006, 02:44 AM	#6
Tropical Snowstorm Lurky lurky Join Date: Sep 2005 Location: Maryville, TN Posts: 553	Re: 84 IROC TPI V8 - good engine? 85 was the first year for TPI Camaros. The TBI started in 87 on the base models, but crossfire (two TBI units) was in 82-84 Z28s as an option. 85 had it's own computer (also in 84 Vettes) and 86-89 were MAF, 90-92 were MAP/speed density. So it may be an 84 TPI from a Vette. __________________ Current slooooow build 1972 Cheyenne Super 1972 C10, sold thread 1970 Camaro RS Family Heirloom

02-27-2006, 03:19 PM	#8
CochinoFilipino Registered User Join Date: Feb 2006 Location: Republic of California Posts: 345	Re: 84 IROC TPI V8 - good engine? Well here it is. I had no luck finding a SWB so I put a wanted ad up. I got one bite and picked it up yesterday. I'll be fixing the ugly stuff this summer. [EDIT] I deleted some pics, including the one of the uglyside. My Geocities usage was being exceded and some of you were getting the Red X. __________________ '67 C10 Short Stepside 5.0TPI/700R4 Last edited by CochinoFilipino; 02-28-2006 at 12:27 PM.

02-27-2006, 03:28 PM	#9
Musclerodz Senior Member Join Date: Aug 2005 Location: OKC, OK Posts: 2,364	Re: 84 IROC TPI V8 - good engine? Am I mistaken or did the centerbolt head motor come out in '88 when they also changed to a one piece rear seal? The '84 Vette was a Crossfire motor, not TPI either. Mike __________________ Mike Redpath Last edited by Musclerodz; 02-27-2006 at 03:29 PM.

02-27-2006, 07:25 PM	#13
71SWBChevy Post Whore Join Date: Aug 2005 Location: Owensboro KY Posts: 11,905	Re: 84 IROC TPI V8 - good engine? Sweet looking truck man, you should have never shown us the drivers side! __________________ Drew '71 Chevy 350/TH350 Hugger Orange Currently just a rolling frame, body work soon to follow!!! Check out my Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=212927 Daily Driver: 1997 Chevrolet S-10 with more gears than pistons

02-27-2006, 08:04 PM	#14
LONGHAIR just can't cover up my redneck Join Date: May 2004 Location: Columbus OH Posts: 11,414	Re: 84 IROC TPI V8 - good engine? The one piece rear main started in '86

02-27-2006, 09:23 PM	#16
CochinoFilipino Registered User Join Date: Feb 2006 Location: Republic of California Posts: 345	Re: 84 IROC TPI V8 - good engine? Are there any headers that will fit my application? __________________ '67 C10 Short Stepside 5.0TPI/700R4

02-27-2006, 11:01 PM	#17
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Re: 84 IROC TPI V8 - good engine? Any normal SBC headers for a 67-72 truck will work. You will need to keep an O2 sensor bung though. You can buy the bung seperately and weld it into the new headers if you need to. __________________ I'm on the Instagram- @Gearhead_Kevin

02-28-2006, 11:38 AM	#18
72MARIO Registered User Join Date: Nov 2000 Location: Huntsville Ontario Canada Posts: 4,051	Re: 84 IROC TPI V8 - good engine? Nice looking Stepper. I love the rims. __________________ 1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair http://67-72chevytrucks.com/vboard/s...d.php?t=625017 1967 C/20 6.0/4L80 Roofing Truck 1990 V2500 Suburban "Plow Truck" 2005 TAHOE DD

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