2.8 exhaust

1994dime · 10-25-2009, 11:31 PM

I heard from a friend that putting an bigger exhaust system on a 2.8(like a 2.5" pipe) will give you noticeable power because these motors were "constricted", he also said if i do a cold air kit and a bigger exhaust it will run alot better... is this true?

chaospartners · 10-25-2009, 11:39 PM

Helps a little bit but not nothing serious. I got a 2.8 with headers, no cat into a spintech muffler with 2.5 pipe and it dont run bad but it aint no race car

neo71665 · 10-25-2009, 11:43 PM

Quote: Originally Posted by chaospartners

Helps a little bit but not nothing serious. I got a 2.8 with headers, no cat into a spintech muffler with 2.5 pipe and it dont run bad but it aint no race car

x2 The exhaust aint the bad part of a 2.8, the iron heads flow like shit.

BarelyGettinBy · 10-25-2009, 11:46 PM

x2 Exhaust helped a little but nothing major. Heads suck on these little motors

1994dime · 10-26-2009, 08:40 AM

so if i got the heads cleaned up and possibly port it to open it a little would that make a difference.

neo71665 · 10-26-2009, 12:35 PM

It helps but not a major change. Its more in the design that the 2.8 got screwed. If your really wanting power gains from a 2.8 look at either a GM crate 3.4 or 93-95 f-body 3.4.
http://members.shaw.ca/betterthanyou...ine%20swap.htm

Paw_USA_AL · 11-11-2009, 03:29 AM

almost any exhaust difference over stock is an improvement but it's not going to make like super fast all the sudden

10-25-2009, 11:31 PM	#1
1994dime Registered User Join Date: Oct 2009 Posts: 62 Location: User is: OffLine	2.8 exhaust I heard from a friend that putting an bigger exhaust system on a 2.8(like a 2.5" pipe) will give you noticeable power because these motors were "constricted", he also said if i do a cold air kit and a bigger exhaust it will run alot better... is this true?
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10-25-2009, 11:39 PM	#2
chaospartners Registered User Join Date: May 2007 Posts: 1,164 Location: Somewhere in Ohio User is: OffLine	Re: 2.8 exhaust Helps a little bit but not nothing serious. I got a 2.8 with headers, no cat into a spintech muffler with 2.5 pipe and it dont run bad but it aint no race car
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10-25-2009, 11:43 PM	#3
neo71665 4x4 v6 blazer Age: 29 Join Date: Oct 2004 Posts: 5,002 Location: rison arkansas User is: OffLine	Re: 2.8 exhaust Quote: Originally Posted by chaospartners Helps a little bit but not nothing serious. I got a 2.8 with headers, no cat into a spintech muffler with 2.5 pipe and it dont run bad but it aint no race car x2 The exhaust aint the bad part of a 2.8, the iron heads flow like shit.
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10-25-2009, 11:46 PM	#4
BarelyGettinBy Registered User Age: 20 Join Date: Apr 2008 Posts: 1,359 Location: London Ky User is: OffLine	Re: 2.8 exhaust x2 Exhaust helped a little but nothing major. Heads suck on these little motors
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10-26-2009, 08:40 AM	#5
1994dime Registered User Join Date: Oct 2009 Posts: 62 Location: User is: OffLine	Re: 2.8 exhaust so if i got the heads cleaned up and possibly port it to open it a little would that make a difference.
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10-26-2009, 12:35 PM	#6
neo71665 4x4 v6 blazer Age: 29 Join Date: Oct 2004 Posts: 5,002 Location: rison arkansas User is: OffLine	Re: 2.8 exhaust It helps but not a major change. Its more in the design that the 2.8 got screwed. If your really wanting power gains from a 2.8 look at either a GM crate 3.4 or 93-95 f-body 3.4. http://members.shaw.ca/betterthanyou...ine%20swap.htm
	[Reply w/Quote]

11-11-2009, 03:29 AM	#7
Paw_USA_AL Registered User Age: 19 Join Date: Sep 2009 Posts: 40 Location: User is: OffLine	Re: 2.8 exhaust almost any exhaust difference over stock is an improvement but it's not going to make like super fast all the sudden
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