TPI conversion has anyone done it? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Custom 68 · 06-14-2002, 09:33 AM

I am giving some serious thought about this conversion. I am wondering some specifics of your engine cam heads and any other. Are you happy you did it? Did you use MAF or MAP (speed density)? Any computer modifications?
This sounds good in theory just wanted some feed back
Thanks

PushinPebbles · 06-14-2002, 09:37 AM

Talk to BADASS69 I think..................His truck is awesome...........
there is a few other ones here........................Jack

Beast388 · 06-14-2002, 09:45 AM

Blazbk has done it in his blazer.......
Here is a link to his site with pics......
http://www.imagestation.com/album/?id=4292391623

red71cheyenne · 06-14-2002, 10:18 AM

What a coincidence. I'm from Fordland originally. Far from there now. I put a Tuned port in mine. Went with the map and speed density setup. Its a real easy swap, I did it all myself. Only bad thing is it was a little pricey. I do love the power, response and looks of it though. I'm not as happy with the gas mileage, but I am getting a custom chip to help compensate for that. Hardest part was the fuel system. Getting plumbing done that is. Other than that, I would say go for it. Good luck, Jeff.

Smooth68 · 06-14-2002, 10:31 AM

Check with these folks - they originally got started building wiring harnesses for tune-port conversions and went from there. They're just about 2 hours from me - I got all my brackets, pulleys, and etc from this place.

http://www.hotrodlane.cc/

68 with 350 TPI · 06-14-2002, 10:50 AM

Im smack dab in the middle of doing a 350 TPI swap in my 68.

I took all the goodies out of a 88 IROC-Z to do the swap.
The engine,trans,PCM,etc.

The Speed Density (MAP) is a easy swap as you dont have to run a air box of any kind and you can just buy a K&N filter to go on the end of the throttle body.

But dont rule out the mass airflow!!!
They both have a strong and week point but the mass airflow is far less sensitive to cam changes and you can get buy with a more radical cam,etc before the engine sets a code.
Crane,Comp,SLP,and TPIS all make a large amount of computer controled cams for these engines and you should get one that works best for you.

But as I said they both work well and whatever you can find at the local yards should work fine.
I have ran quite a few of these engines in camaros but this is the first one I have swaped.

As someone said before the fuel lines/pump is the hardest part of the swap.
Im not sure yet if Im going to use my stock tank and run a inline pump or if Im going to get a tank out of another car/truck yet.
I have to still check the fuel injected trucks at the local yard and see what I can find.

Custom 68 · 06-14-2002, 12:35 PM

Hey keep the info coming. I may e-mail some of you with more questions or feel free to drop me a note if you want to add anything else.

Thanks

da-burb · 06-14-2002, 04:24 PM

I will be doing the same thing on my next suburban. I luckily know somebody that does this swap for a living. I think I am going to give him my bare rolling frame with the engine and tranny sitting in it and let him do the work.

71Blazer · 06-14-2002, 05:50 PM

Speaking of plumbing for TPI, which companies/products are best?

06-14-2002, 09:33 AM	#1
Custom 68 Registered User Join Date: Nov 2001 Location: Springfield, MO Posts: 2,930	TPI conversion has anyone done it? I am giving some serious thought about this conversion. I am wondering some specifics of your engine cam heads and any other. Are you happy you did it? Did you use MAF or MAP (speed density)? Any computer modifications? This sounds good in theory just wanted some feed back Thanks __________________ Dave 1968 Custom Chevy with turbo charged 5.3 gen III 4l80e swap 1967-71 GMC 3/4 ton long step 4x4 (not sure what year exactly?) "A good friend will bail you out of jail...but a true friend will be sitting next to you saying "that was frekin awesome". "If it doesn't fit force it...If it breaks then it needed to be replaced anyway!"

06-14-2002, 09:37 AM	#2
PushinPebbles My dad's 68 Join Date: May 2002 Location: VA Posts: 444	Talk to BADASS69 I think..................His truck is awesome........... there is a few other ones here........................Jack __________________ Jack M. 67 C-10 SWB 355 built T-350 tranny hurst shifter 17x8in KMC's on michelins, clear tails and back up lights slammedUPDATE i have decided on my bag setup and will post further info when i recieve all the parts **************************** 88 1/2 ton suburban 4x4 350/700R-4having a 9 in lift w/ 38 in tires 4 12 inch Lightning Audios *************************** 87 silverado 3/4ton jacked up 10-12 inches black and rubberized bed coating 35 in michelans ************************** Dad's truck 68 C-10 stepside, 468 BB, tubbed, weld wheels, Nason black,lots more **************************** grand dads truck 68 C-10 stepside fuel inj. 350/700R-4soon in audi silver **************************** 84 toyota pickup 22R 5 speed 2WD slammed, shaved and all the body lines filled w/ buickGN scoop,bout to be sprayed in 2003 mustang green metallic w/ silver flames **************************** S/N=BIGGYTYME@aol.com (hydros) "No fat chics, truck will scrape"

06-14-2002, 09:45 AM	#3
Beast388 Suburbans RULE! Join Date: Jan 2000 Location: Clinton, IA 52732 Posts: 689	Blazbk has done it in his blazer....... Here is a link to his site with pics...... http://www.imagestation.com/album/?id=4292391623 __________________ --Ben 71 GMC Suburban 4X4 The "Beast" 388 CID Stroker, TH350, NP205, 8-lug D44, 14BFF w/ Detroit, 4.10:1 gears, 4-Wheel Disks 4" Lift, 35" MT/R's.

06-14-2002, 10:18 AM	#4
red71cheyenne Back in the sticks Join Date: Jan 2001 Location: Fordland, MO Posts: 3,188	What a coincidence. I'm from Fordland originally. Far from there now. I put a Tuned port in mine. Went with the map and speed density setup. Its a real easy swap, I did it all myself. Only bad thing is it was a little pricey. I do love the power, response and looks of it though. I'm not as happy with the gas mileage, but I am getting a custom chip to help compensate for that. Hardest part was the fuel system. Getting plumbing done that is. Other than that, I would say go for it. Good luck, Jeff. __________________ 1971 Cheyenne C-10 w/700R4 and Tuned Port Injection 1969 K5 Blazer w/Tuned Port 2010 2SS/RS Flaming Orange Camaro 2011 K1500 Suburban 2014 K1500 Pickup 2008 Nissan Altima? The wifes' hoopty

06-14-2002, 10:31 AM	#5
Smooth68 Registered User Join Date: Aug 2001 Location: West Fork, Arkansas - Razorback Country Posts: 1,826	Check with these folks - they originally got started building wiring harnesses for tune-port conversions and went from there. They're just about 2 hours from me - I got all my brackets, pulleys, and etc from this place. http://www.hotrodlane.cc/ __________________ Smooth68's Web Site WTB 64-66 project or frame/cab, SWB or LWB...I have the fever! Whatcha got?? '68 Short Step - Shaved Body, Soon Bagged - *SOLD* Driver-2004 GMC Z-71 Ext-cab

06-14-2002, 10:50 AM	#6
68 with 350 TPI Registered User Join Date: May 2002 Location: Wingate NC Posts: 456	Im smack dab in the middle of doing a 350 TPI swap in my 68. I took all the goodies out of a 88 IROC-Z to do the swap. The engine,trans,PCM,etc. The Speed Density (MAP) is a easy swap as you dont have to run a air box of any kind and you can just buy a K&N filter to go on the end of the throttle body. But dont rule out the mass airflow!!! They both have a strong and week point but the mass airflow is far less sensitive to cam changes and you can get buy with a more radical cam,etc before the engine sets a code. Crane,Comp,SLP,and TPIS all make a large amount of computer controled cams for these engines and you should get one that works best for you. But as I said they both work well and whatever you can find at the local yards should work fine. I have ran quite a few of these engines in camaros but this is the first one I have swaped. As someone said before the fuel lines/pump is the hardest part of the swap. Im not sure yet if Im going to use my stock tank and run a inline pump or if Im going to get a tank out of another car/truck yet. I have to still check the fuel injected trucks at the local yard and see what I can find. __________________ Life is good with a 6-71 supercharged 355 in a 72 camaro

06-14-2002, 12:35 PM	#7
Custom 68 Registered User Join Date: Nov 2001 Location: Springfield, MO Posts: 2,930	Thanks Hey keep the info coming. I may e-mail some of you with more questions or feel free to drop me a note if you want to add anything else. Thanks __________________ Dave 1968 Custom Chevy with turbo charged 5.3 gen III 4l80e swap 1967-71 GMC 3/4 ton long step 4x4 (not sure what year exactly?) "A good friend will bail you out of jail...but a true friend will be sitting next to you saying "that was frekin awesome". "If it doesn't fit force it...If it breaks then it needed to be replaced anyway!"

06-14-2002, 04:24 PM	#8
da-burb "Ochre Ogre" Join Date: Apr 2000 Location: Springfield, MN Posts: 3,558	I will be doing the same thing on my next suburban. I luckily know somebody that does this swap for a living. I think I am going to give him my bare rolling frame with the engine and tranny sitting in it and let him do the work. __________________ Bowtie Truck Stop Inc. Mid-West GM Truck Restoration Parts Supplier Your Key Parts, Auto Metal Direct, Dynacorn, and Goodmark dealer. like us @ www.facebook.com/BowtieTruckStop 1971 C-10 Suburban (Ochre) 1971 K-10 Suburban (Ochre) 1972 C-10 Suburban (Ochre) 1972 K-20 Suburban (Yellow- that just aint right!) Springfield, Minnesota 56087

06-14-2002, 05:50 PM	#9
71Blazer Goodbye Darlin' Join Date: Nov 2001 Location: Coupeville, WA USA Posts: 330	Speaking of plumbing for TPI, which companies/products are best? __________________ 1971 Blazer CST SOLD!



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