LT1-LT4 Modifications 1993-97 Gen II Small Block V8

AFR heads

Thread Tools
 
Search this Thread
 
Old Apr 27, 2009 | 10:04 PM
  #1  
lt1formula275's Avatar
Thread Starter
Staging Lane
 
Joined: Aug 2008
Posts: 88
Likes: 0
Question AFR heads

Anyone had any experience with these heads there going on a stock bottom end lt1 heres the link http://www.airflowresearch.com/store...oducts_id=3353
Reply
Old Apr 27, 2009 | 10:49 PM
  #2  
Puck's Avatar
TECH Veteran
iTrader: (17)
 
Joined: Oct 2006
Posts: 4,152
Likes: 6
Default

Originally Posted by lt1formula275
Anyone had any experience with these heads there going on a stock bottom end lt1 heres the link http://www.airflowresearch.com/store...oducts_id=3353
Not a great choice if you plan on leaving them as cast. If you send them to a good porter they will be awesome, but much to expensive and overkill on a stock bottom end LT1.

Personally on the stock bottom end I would run ported stockers, or maybe as cast darts. TFS heads kill CR too much on the stock shortblock and AFRs leave a bit to be desired as cast.
Reply
Old Apr 28, 2009 | 07:41 AM
  #3  
DAVE00's Avatar
TECH Fanatic
15 Year Member
iTrader: (10)
 
Joined: Jul 2007
Posts: 1,739
Likes: 2
From: Houston, TX
Default

I have the older AFR190's and they flow really good out of the box, however if you're gonna spend 1800 on 180's from AFR I'd go ahead and have LE port your stockers out for less and his will out flow those AFR's all day long.
Reply
Old Apr 28, 2009 | 03:41 PM
  #4  
JAKEJR's Avatar
TECH Regular
 
Joined: Apr 2007
Posts: 420
Likes: 0
From: Kempner, TX
Default

My take is, don't let flow numbers give you an orgasm. Flow numbers are just that numbers. Numbers on a piece of paper.

The important issue is whether those numbers actually translate into improved/superior performance AND, if so, does that improved/superior performance justify the additional cost.

Many love to brag bout how many HP their engine makes at some screamingly high RPM, yet fail to temper that with comments on just how rarely the engine is ever up that high.

Take, for example, a 7000 rpm street engine that rumbles around town and is shown off every chance the owner has to pop the hood. Yet this same engine rarely gets above 3000 rpms in street driving.

What a waste; psychology has a name for such behavior. This isn't just my view either. The cam gurus at CompCams, Lunati and Crance have even commented on it; how so few actually have a plan when selecting parts.

But, HEY! he can brag, right? DUH!

Jake

West Point ROCKS!
Reply
Old Apr 28, 2009 | 03:46 PM
  #5  
SpeedDensityZ's Avatar
11 Second Club
iTrader: (5)
 
Joined: Nov 2006
Posts: 852
Likes: 0
From: Macclenny FL
Default

Originally Posted by lt1formula275
Anyone had any experience with these heads there going on a stock bottom end lt1 heres the link http://www.airflowresearch.com/store...oducts_id=3353
I think everyone is going to tell you the same thing they told you in the last post. Ported stockers from either LE or AI or out of the box Darts. There isn't too many cylinder head manufactures that put up good numbers out of the box when it comes to the LT1.
Reply




All times are GMT -5. The time now is 11:38 PM.

story-0
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-1
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-2
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-3
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-4
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-5
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-6
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-7
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-8
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-9
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE