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Newbie with 454 TBI questions. (Read 2547 times)
rrbgtt
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Newbie with 454 TBI questions.
12/19/09 at 19:19:16
 
My appologies ahead of time if this is posted in the wrong place.  I have searched other forums for the answers and have been referred to this site three times, so here I am.

I have a 1986 Shortbed chevy 4x4 with a 305.  I just traded some things I didn't need for an 89 Suburban with a 70k mile 454 in it.  I am going to put it in the 1/2 ton truck.   I had originally intended to carb. the motor since the truck is carbed now.  I have also read that the heads are very limiting on this engine, but cannot find the definition of "limiting".  
How much HP can I get out of this engine with intake, carb and cam; using the stock heads?  Does anyone have a cam suggestion?  I want the loping sound more than the performance.
Should I stick with the TBI?  I have the complete Suburban.
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f-body
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Re: Newbie with 454 TBI questions.
Reply #1 - 12/20/09 at 02:51:06
 
Here is a link to the Horsepower Tv build up of a budget build 454.
There are two links. One for the actual show of the buildup and another for the specs on the engine. Hope it helps. The 454 made 409hp and 525 ftlbs torque. The heads used on this engine were peanut ports like your heads on the 89 454. One of the links showed the cam used on this engine.
 You could duplicate this with your 454 engine and use the TBI and get better drivability.  Since your truck is a carb all ready it might be easier to keep it carbed.
 Dont know if you have to pass emisions or not. You could make it look factory by just using the entire setup from the 89 model.




http://www.spike.com/full-episode/454-budget-build/33123

http://www.powerblocktv.com/site3/index.php/horsepower-episodes?ep_num=HP2009-12...
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There were 13,802 1974 Z28's made. I got two of them!
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1974 Z28 restoration project
1974 Z28 shell ( more of a project)
1992 Chevy Silverado (black with red interior V6 5speed) 454SS wannabe.
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69Camaro
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Re: Newbie with 454 TBI questions.
Reply #2 - 12/20/09 at 08:05:43
 
Quote:
 I want the loping sound more than the performance.
Should I stick with the TBI?  I have the complete Suburban.


TBI will require much tuning with a cam like that, you may want to stay carb if running a big cam.
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rrbgtt
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Re: Newbie with 454 TBI questions.
Reply #3 - 12/20/09 at 09:50:20
 
f-body wrote on 12/20/09 at 02:51:06:
Here is a link to the Horsepower Tv build up of a budget build 454.
There are two links. One for the actual show of the buildup and another for the specs on the engine. Hope it helps. The 454 made 409hp and 525 ftlbs torque. The heads used on this engine were peanut ports like your heads on the 89 454. One of the links showed the cam used on this engine.
 You could duplicate this with your 454 engine and use the TBI and get better drivability.  Since your truck is a carb all ready it might be easier to keep it carbed.
 Dont know if you have to pass emisions or not. You could make it look factory by just using the entire setup from the 89 model.




http://www.spike.com/full-episode/454-budget-build/33123

http://www.powerblocktv.com/site3/index.php/horsepower-episodes?ep_num=HP2009-12...


Thanks.  Just what I was looking for.  I live in Fl and emissions is not an issue.

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Rock454
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Re: Newbie with 454 TBI questions.
Reply #4 - 12/20/09 at 19:45:20
 
Well since you are in Florida you have the advantage of low temperature swings and minimal elevation changes, so a carb would not be too bad.

The heads do limit the performance, not goo breathers but may a bunch of torque.  What are you planning on doing with the truck?  Daily driver, racer, weekend cruiser, etc.  This will help determine what would be your best set up.
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...
2004 Yukon - Magnaflow cat back
2001 Seville STS
1990 454SS Whipple charged 7 psi, Edelbrock Performer TBI intake, Edelbrock TES, Borla Cat back, heated O2, Eaton limited slip, 2/4 lowered, Gear Vendor Overdrive, Belltech Rear Sway Bar, 13.54 sec @ 100.02 1/4 mile
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rrbgtt
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Re: Newbie with 454 TBI questions.
Reply #5 - 12/21/09 at 08:24:45
 
Rock454 wrote on 12/20/09 at 19:45:20:
Well since you are in Florida you have the advantage of low temperature swings and minimal elevation changes, so a carb would not be too bad.

The heads do limit the performance, not goo breathers but may a bunch of torque.  What are you planning on doing with the truck?  Daily driver, racer, weekend cruiser, etc.  This will help determine what would be your best set up.

The truck will be my son's daily driver and weekend warrior.  By daily driver, I mean 3 miles to school and back, and the weekend, it will be in the woods at bonfires, playing in the mud, and generally subjected to 17 year old abuse.  From what I have read, the peanut heads should be fine for us.  I want the torque, but not high rpm hp.  
...
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Re: Newbie with 454 TBI questions.
Reply #6 - 12/21/09 at 17:48:11
 
For off roading, the peanuts may actually not be too bad for you then.  You cannot make huge power with them, but torque in the low 500 range is pretty easy.
I still have them on mine and with the charger on them they do pretty well. Grin
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2004 Yukon - Magnaflow cat back
2001 Seville STS
1990 454SS Whipple charged 7 psi, Edelbrock Performer TBI intake, Edelbrock TES, Borla Cat back, heated O2, Eaton limited slip, 2/4 lowered, Gear Vendor Overdrive, Belltech Rear Sway Bar, 13.54 sec @ 100.02 1/4 mile
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Busted Knuckles
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Re: Newbie with 454 TBI questions.
Reply #7 - 12/22/09 at 07:27:17
 
Peanut heads will be perfect, they won't let him rev it high enough to do any real damage.
Cool truck for a 17 year old.  Shoot, it would be a cool truck for a 57 year old!
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Re: Newbie with 454 TBI questions.
Reply #8 - 12/23/09 at 05:10:40
 
Also check out Supe Chevy January 2010 issue page 50. Here is a link to the article. They used a 454 with stock peanut port heads for a base line and made 400hp with a small cam. This should fit your bill just right for your 4x4 build.

http://www.superchevy.com/technical/engines_drivetrain/completebuilds_testing/su...
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There were 13,802 1974 Z28's made. I got two of them!
1974 Camaro coupe
1974 Z28 restoration project
1974 Z28 shell ( more of a project)
1992 Chevy Silverado (black with red interior V6 5speed) 454SS wannabe.
Anything with turbos is cool, anything with two turbos is twice as cool!
 
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Joesgarage
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Re: Newbie with 454 TBI questions.
Reply #9 - 12/23/09 at 09:19:01
 
good reading, but they should have used the larger oval port heads instead of the rec port.
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Re: Newbie with 454 TBI questions.
Reply #10 - 12/23/09 at 15:37:33
 
Joesgarage wrote on 12/23/09 at 09:19:01:
good reading, but they should have used the larger oval port heads instead of the rec port.
.02

Well Im going to use a set of Merlins and a roller cam.
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There were 13,802 1974 Z28's made. I got two of them!
1974 Camaro coupe
1974 Z28 restoration project
1974 Z28 shell ( more of a project)
1992 Chevy Silverado (black with red interior V6 5speed) 454SS wannabe.
Anything with turbos is cool, anything with two turbos is twice as cool!
 
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