TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
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Cam and Porting advised. Need more opinions.

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Old Jul 31, 2011 | 03:14 PM
  #1  
Rezi1987TA's Avatar
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From: Tbilisi, Georgia (ex Soviet Union)
Car: 1987 Pontiac Firebird Trans Am
Engine: 305 TPI
Transmission: T-5
Axle/Gears: 3.45
Cam and Porting advised. Need more opinions.

I've been advised to put in my stock 305 TPI (Auto converted to Manual) the following camshafts:
http://www.jegs.com/i/Crane+Cams/271/104224/10002/-1
http://www.summitracing.com/parts/CRN-104224/
or
this one:
http://www.competitionproducts.com/E...uctinfo/E1136/

I want some extra power from my 305 before I find a 350 Block (if that ever happens).
So I was considering a Cam upgrade and some porting like this:
https://www.thirdgen.org/siameseport
http://www.gmtips.com/3rd-degree/dox...-port/port.htm
http://www.cis.udel.edu/~davis/z28/buildup/plenum/

Which Cam should I choose? And what gains will I get?
Also which Fuel Pressure Regulator should I get (as cheap as possible...) and where should I install it?

I guess some (or most) of my questions might be noobish...but I really need help.

P.S.: Tuning is nearly impossible where I live. American cars are EXTREMELY rare here.....I look like an alien here when I drive my TA.

Here's my previous post:
https://www.thirdgen.org/forums/tpi/...ml#post4979368

Last edited by Rezi1987TA; Aug 1, 2011 at 05:35 AM.
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Old Aug 1, 2011 | 05:33 AM
  #2  
Rezi1987TA's Avatar
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From: Tbilisi, Georgia (ex Soviet Union)
Car: 1987 Pontiac Firebird Trans Am
Engine: 305 TPI
Transmission: T-5
Axle/Gears: 3.45
Re: Cam and Porting advised. Need more opinions.

someone? :-S
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Old Aug 1, 2011 | 11:19 PM
  #3  
robertfrank's Avatar
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From: Salt Lake City, Utah
Car: 1988 camaro "SS"/ 1991 305/T5
Engine: 383 LT1 in progress/LT1TBI 355 soon
Transmission: Probuilt 700R4 3600 stall/ T5
Axle/Gears: Moser axles, 3.42 Eaton Posi
Re: Cam and Porting advised. Need more opinions.

If you're wanting to swap cams and heads without a tune you're pretty much up **** creek without a paddle bro. If you can wing it I would definitely get the EBL Flash from www.dynamicefi.com. Even for a novice tuner it makes life MUCH easier when you decide to go outside of the "bolt on" area.
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Old Aug 2, 2011 | 02:11 AM
  #4  
Rezi1987TA's Avatar
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From: Tbilisi, Georgia (ex Soviet Union)
Car: 1987 Pontiac Firebird Trans Am
Engine: 305 TPI
Transmission: T-5
Axle/Gears: 3.45
Re: Cam and Porting advised. Need more opinions.

Thanks a lot for the reply.
Without a tune and the cam and porting how would the car run with just the AFPR?
Can I order a custom burned chip later? (If yes which one and from which website)
Help! lol
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Old Aug 2, 2011 | 02:15 AM
  #5  
robertfrank's Avatar
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From: Salt Lake City, Utah
Car: 1988 camaro "SS"/ 1991 305/T5
Engine: 383 LT1 in progress/LT1TBI 355 soon
Transmission: Probuilt 700R4 3600 stall/ T5
Axle/Gears: Moser axles, 3.42 Eaton Posi
Re: Cam and Porting advised. Need more opinions.

Like a dogs a$$. truthfully
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Old Aug 2, 2011 | 02:37 AM
  #6  
Rezi1987TA's Avatar
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From: Tbilisi, Georgia (ex Soviet Union)
Car: 1987 Pontiac Firebird Trans Am
Engine: 305 TPI
Transmission: T-5
Axle/Gears: 3.45
Re: Cam and Porting advised. Need more opinions.

ok. :-S
So what would you recommend? Can I order a custom burnt chip to insert into my stock ECU?

Last edited by Rezi1987TA; Aug 2, 2011 at 05:49 AM.
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Old Aug 2, 2011 | 08:06 PM
  #7  
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From: The Jersey Shore
Car: 1991 Firebird Convertible
Engine: 5.7 L98
Transmission: 700R4
Axle/Gears: 3.45 9 Bolt Posi
Re: Cam and Porting advised. Need more opinions.

Originally Posted by Rezi1987TA
ok. :-S
So what would you recommend? Can I order a custom burnt chip to insert into my stock ECU?

i dont see why not
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Old Aug 3, 2011 | 02:32 AM
  #8  
Rezi1987TA's Avatar
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Joined: Feb 2011
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From: Tbilisi, Georgia (ex Soviet Union)
Car: 1987 Pontiac Firebird Trans Am
Engine: 305 TPI
Transmission: T-5
Axle/Gears: 3.45
Re: Cam and Porting advised. Need more opinions.

Could you tell me where should I order it from and how much would it cost approximately?
Thanks a lot.
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Old Aug 3, 2011 | 10:33 AM
  #9  
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From: colorado
Car: 1987 formula
Engine: 305 tpi
Transmission: t5
Axle/Gears: 3.45
Re: Cam and Porting advised. Need more opinions.

If you do go with a afpr you need to be able to make more air be able to come in with a cold air intake and exhaust i have seen one person on here who has put a cold air intake on with exhaust and ignition stuff. and when he added the afpr he recorded 40hp gain and 30 foot pounds of torque gain not counting the mods already on the car.
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Old Aug 3, 2011 | 05:45 PM
  #10  
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From: Pittsburgh PA
Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: Cam and Porting advised. Need more opinions.

www.pcmforless.com

thats what I'd try first if you need a chip for the mods you do. being MAF it will be easier to tune, but still require a tune to run best. It may run ok without a tune at first, but WOT may be off.

You could order the equipment to do it yourself and learn here. Thats your best bet if you plan on keeping a car like that where you live and plan on doing more mods in the future.
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