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simpson6716 New Member
Joined: 08 Sep 2010 Posts: 12 Location: Adair Village,OR
1985 Chevrolet Camaro Z/28
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Posted: Wed Oct 13, 2010 8:45 pm Post subject: 327 TPI |
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OK, I have an 85 Z that has a 305 TPI and I just recently got a great deal on a 327. Would the 305 TPI work with the 327? And would I have to get bigger injectors and a different ECM? The 327 came out of a 66 Corvette and it is .30 over with a large cam and fresh heads. Anything that I might be missing or would this be a good swap for the TPI? |
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aaron_sK Member
Joined: 23 Jan 2006 Posts: 8834 Location: Back in beautiful Tacompton
1987 Chevrolet Camaro IROC-Z
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Posted: Wed Oct 13, 2010 8:48 pm Post subject: Re: 327 TPI |
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simpson6716 wrote: | Anything that I might be missing |
Airflow. |
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Twilightoptics Hardcore (12sec Club)
Joined: 13 Jan 2004 Posts: 9191 Location: Auburn , WA
1987 Chevrolet Camaro IROC-Z
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Posted: Wed Oct 13, 2010 9:22 pm Post subject: |
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Definitely airflow.
What compression and what's a 'big cam'
A mostly stock 327 would be alright with a MAF setup and a small bump in fuel pressure.
A modded 327 MIGHT be SEMI okay with a 350 tune.
Big cam? Forget about it without tuning yourself.
End answer, yes it can all be done.
BTW 327 = high rev
TPI = 4200max rpm for power. _________________ A redline a day keeps the carbon away! |
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aaron_sK Member
Joined: 23 Jan 2006 Posts: 8834 Location: Back in beautiful Tacompton
1987 Chevrolet Camaro IROC-Z
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Posted: Wed Oct 13, 2010 9:30 pm Post subject: |
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For what it's worth I would sell the TPI intake and find a nice Stealthram (if you want EFI), or just swap a carb.
TPI will just choke your chicken... |
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91RSVert Member
Joined: 16 May 2007 Posts: 2736 Location: AR
1991 Chevrolet Camaro RS
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Posted: Thu Oct 14, 2010 4:13 am Post subject: |
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I would say it would require different injectors, and tune w/o a doubt.
While I agree with the stealth ram, or do a LTx intake. A tpi can be made to breath above 4200, but it takes alot of work that can be done easier by doing the LTx or aftermarket.
But also, if TPI is all you got and can afford now. Drop it in, and start saving to get the intake you want. |
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iansane Member
Joined: 16 Jan 2004 Posts: 5740 Location: Bothell
1991 Pontiac Trans Am
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Posted: Thu Oct 14, 2010 6:55 am Post subject: |
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_________________
Quote: | Sometimes I actually think I'm slightly retarded in the mouth. |
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simpson6716 New Member
Joined: 08 Sep 2010 Posts: 12 Location: Adair Village,OR
1985 Chevrolet Camaro Z/28
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Posted: Thu Oct 14, 2010 4:26 pm Post subject: |
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Twilightoptics wrote: | Definitely airflow.
What compression and what's a 'big cam'
A mostly stock 327 would be alright with a MAF setup and a small bump in fuel pressure.
A modded 327 MIGHT be SEMI okay with a 350 tune.
Big cam? Forget about it without tuning yourself.
End answer, yes it can all be done.
BTW 327 = high rev
TPI = 4200max rpm for power. |
The motor is still apart so all the parts can be changed. I am not sure what the cam is exactly but I can always get another one.
This is going to be my winter project so I want to get insight into what I am getting myself into. |
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simpson6716 New Member
Joined: 08 Sep 2010 Posts: 12 Location: Adair Village,OR
1985 Chevrolet Camaro Z/28
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Posted: Thu Oct 14, 2010 4:30 pm Post subject: |
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aaron_sK wrote: | For what it's worth I would sell the TPI intake and find a nice Stealthram (if you want EFI), or just swap a carb.
TPI will just choke your chicken... |
Is there a lot to do to change from TPI to carb? Could I leave all the wiring and ECM and just not hook them up? |
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MrMike98 Member
Joined: 18 May 2010 Posts: 231 Location: Bremerton
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Posted: Thu Oct 14, 2010 4:41 pm Post subject: |
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i think this is large journal block. maybe exchange to 350 crank.
now u have a lower rpm motor which is much more suitable to TPI.
please note that what ever u do u will HAVE to tune motor by burning custom chips.
please do the homework and put in the parts that will work together to get u want u want.
Mike
"details make all the difference" |
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RSFreak The other "John"
Joined: 23 Jan 2004 Posts: 2946 Location: Renton
1989 Chevrolet Camaro RS
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Posted: Thu Oct 14, 2010 4:42 pm Post subject: |
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Swapping to a carb setup isn't very complicated. You would need a vaccuum advance distributor as well as carb intake and a carb obviously and either a mechanical fuel pump or pressure regulator if you stick with the electric pump.
simpson6716 wrote: |
Could I leave all the wiring and ECM and just not hook them up? |
You could, but why would you want to? I'd go with the Stealth Ram though. _________________ '86 Trans Am - 5.0L TPI - LT1 cam - 700R4 - WS6
'85 Camaro Berlinetta - IROC clone
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GREG DAVIDSON Member
Joined: 15 Mar 2008 Posts: 1159 Location: Salem
1989 Pontiac Formula
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Posted: Fri Oct 15, 2010 8:17 pm Post subject: |
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MrMike98 wrote: | i think this is large journal block. maybe exchange to 350 crank.
now u have a lower rpm motor which is much more suitable to TPI.
please note that what ever u do u will HAVE to tune motor by burning custom chips.
please do the homework and put in the parts that will work together to get u want u want.
Mike
"details make all the difference" |
66 327 had the small journal crank so no 350 crank |
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IROCDave Member
Joined: 16 Jan 2010 Posts: 957 Location: Snohomish WA
1987 Chevrolet Camaro IROC-Z
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Posted: Fri Oct 15, 2010 8:51 pm Post subject: |
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Why run a high rpm small displacement small block? TPI will kill off any fun above 5K on a small engine, which by the way is the only reason to run a small SBC.
For the guys that are listnening to their bench racing grandfathers, dont waste your money on 1st gen SBC stuff. A 327 with 202 camel hump fulie heads was the shizzle in the late 70's / early 80's, it is now just shizzle. I dont care how cheap it is, it's garbage, dollar for dollar compared to what is availible now.
JMHO. |
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GREG DAVIDSON Member
Joined: 15 Mar 2008 Posts: 1159 Location: Salem
1989 Pontiac Formula
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Posted: Sat Oct 16, 2010 12:07 pm Post subject: |
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IROCDave wrote: | Why run a high rpm small displacement small block? TPI will kill off any fun above 5K on a small engine, which by the way is the only reason to run a small SBC.
For the guys that are listnening to their bench racing grandfathers, dont waste your money on 1st gen SBC stuff. A 327 with 202 camel hump fulie heads was the shizzle in the late 70's / early 80's, it is now just shizzle. I dont care how cheap it is, it's garbage, dollar for dollar compared to what is availible now.
JMHO. |
Wow, ok yea thanks... I'm not going to get into the LS argument again but I'll stick to building my 327 and not wasting thousands and thousands of dollars to get an LS up and running right..... |
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'92 camaro boss Member
Joined: 01 Jan 2008 Posts: 410
1992 Chevrolet Camaro RS
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Posted: Sun Oct 17, 2010 2:30 pm Post subject: |
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You get plenty bang for the buck listening to your grandfather. when you start with an ls platform of course it's practical to build off of that and of course you'll get alot of power.
Starting with a 327, or in my case, an old 350, its cheaper, and you'll still get good enough power from it. it's personal preference in the end i guess, but a good built sbc will hang right there with all of the LS's. |
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iansane Member
Joined: 16 Jan 2004 Posts: 5740 Location: Bothell
1991 Pontiac Trans Am
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Posted: Sun Oct 17, 2010 4:09 pm Post subject: |
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'92 camaro boss wrote: | Starting with a 327, or in my case, an old 350, its cheaper, and you'll still get good enough power from it. it's personal preference in the end i guess, but a good built sbc will hang right there with all of the stock LS's. |
Fixt. |
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simpson6716 New Member
Joined: 08 Sep 2010 Posts: 12 Location: Adair Village,OR
1985 Chevrolet Camaro Z/28
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Posted: Sun Oct 17, 2010 6:45 pm Post subject: |
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IROCDave wrote: | Why run a high rpm small displacement small block? TPI will kill off any fun above 5K on a small engine, which by the way is the only reason to run a small SBC.
For the guys that are listnening to their bench racing grandfathers, dont waste your money on 1st gen SBC stuff. A 327 with 202 camel hump fulie heads was the shizzle in the late 70's / early 80's, it is now just shizzle. I dont care how cheap it is, it's garbage, dollar for dollar compared to what is availible now.
JMHO. |
I was just seeing if that option was available. But after loosing to a Mustang yesterday because the car was like driving a VW after 4400 rpm I need to do something. I don't want to lose to a Ford again.
A little Embarrassing. |
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aaron_sK Member
Joined: 23 Jan 2006 Posts: 8834 Location: Back in beautiful Tacompton
1987 Chevrolet Camaro IROC-Z
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Posted: Sun Oct 17, 2010 7:49 pm Post subject: |
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simpson6716 wrote: | like driving a VW after 4400 rpm |
Sounds about right for a TPI car. |
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Quasi-Traction "I have petals"
Joined: 24 Oct 2005 Posts: 3873 Location: stumptown
1986 Chevrolet Camaro Berlinetta
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Posted: Mon Oct 18, 2010 5:31 pm Post subject: |
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Honestly, I'm with the crowd, It's gonna be too much of a headache to try to run a modified 327 with TPI. If you do end up rolling with the 327, I'd Sell the TPI setup, use the money you make off it to buy yourself a Air-gap, carb and maybe if you got some dough left over, an adjustable FPR and start tuning from there.
You will make better power for less time, expence and trouble than trying to tune a Factory TPI setup on a 327 with what is, supposedly, a "big" cam (as you put it)
Just my humble $.02 _________________
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iansane Member
Joined: 16 Jan 2004 Posts: 5740 Location: Bothell
1991 Pontiac Trans Am
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Twilightoptics Hardcore (12sec Club)
Joined: 13 Jan 2004 Posts: 9191 Location: Auburn , WA
1987 Chevrolet Camaro IROC-Z
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Posted: Mon Oct 18, 2010 7:48 pm Post subject: |
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It's still a tuned port design which is great at one rpm but limited from there out. _________________ A redline a day keeps the carbon away! |
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