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01-02-2013, 09:39 PM | #26 |
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Re: Best way to get to ~400hp, 454 tbi. Anyone build one?
Or ditch tbi. Get a good cam flat top pistons and headers and a 650cfm carb and 400hp comes easily. Or stick with tbi and take twice as long and twice as hard to do it. Tbi is for economy not performance. Stick with its designed root and no issues.
IMO massaging tbi for performance is like a one legged dog trying to bury a turd on a frozen pond. Posted via Mobile Device
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01-02-2013, 09:58 PM | #27 | |
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Re: Best way to get to ~400hp, 454 tbi. Anyone build one?
Quote:
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'77 K35 - 454, SM465/NP205, 4.56 D60/14bFF |
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01-02-2013, 11:25 PM | #28 |
JamesChurch13
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Location: Edwards AFB Sunny California
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Re: Best way to get to ~400hp, 454 tbi. Anyone build one?
Great info. So with an 87 454 running long tube headers and a torquer intake what would be the best carb to hold a tune and add some power? Rebuild the Q-Jet 750 or go with Holley or spend god money on the Fast EFI? In a few months I will also get a mild cam. I want it to spin tires and sound nice. I drive it on occasion my Buell gets most of my daily drive/riding. This truck is just for fun and hauling the bikes to the dirt bike track which is 5 miles away.
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HG/FTW!!! Current vehicle collection: 1968 Chevy C-10 SWB Fleet Side, 327ci, TH350 (MD) 1987 Chevy Dually Quad Cab, 427ci, TH400 2008 Buell XB12SS, 1203cc 2006 YZ450F Wheelie Machine! 1997 Suzuki Bandit 600cc And the Wife has some cars I pay insurance on and use to transport the kids!(01' Grand Cherokee and 06' Pontiac Grand Prix) |
01-03-2013, 12:58 AM | #29 |
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Re: Best way to get to ~400hp, 454 tbi. Anyone build one?
Any good carb holds a tune it's the people that won't leave well enough alone that have problems
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377 sbc thumpr cam autogear m23 muncie 3:73 Detroit trutrac 3''spintech prostreet mufflers xpipe 1 3/4 headers build thread !http://67-72chevytrucks.com/vboard/s...d.php?t=577217 Iroc gauge threadhttp://67-72chevytrucks.com/vboard/s...d.php?t=554511 |
01-03-2013, 05:47 PM | #30 |
JamesChurch13
Join Date: May 2006
Location: Edwards AFB Sunny California
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Re: Best way to get to ~400hp, 454 tbi. Anyone build one?
Sorted. Got an 800CFM Quadrajet tuned for my motor on the way from Sean Murphy Induction. Once it arrives I will do a no kidding start to finish TBI off Carb on Build thread. Can't wait. I miss my 68 short bed in the great state of Maryland with it's 327 that runs like a top but this toy hauling 87 Dually will do once it is making more than 230HP. Thanks for all the help with this forum fellas!
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HG/FTW!!! Current vehicle collection: 1968 Chevy C-10 SWB Fleet Side, 327ci, TH350 (MD) 1987 Chevy Dually Quad Cab, 427ci, TH400 2008 Buell XB12SS, 1203cc 2006 YZ450F Wheelie Machine! 1997 Suzuki Bandit 600cc And the Wife has some cars I pay insurance on and use to transport the kids!(01' Grand Cherokee and 06' Pontiac Grand Prix) |
06-30-2013, 11:43 PM | #31 |
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Re: Best way to get to ~400hp, 454 tbi. Anyone build one?
Get a 6.0 liter Lq4/Lq9 block and build a 408 stroker. That is the route I am going.
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07-01-2013, 11:51 AM | #32 |
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Re: Best way to get to ~400hp, 454 tbi. Anyone build one?
Subscribed. My 90 454tbi does ok just running along, but pulling my trailer keeps it busy, and it is still stock height with stock tires. The lift and tires are going to hurt it, so more power is going to be on the list.
Good info here guys! Posted via Mobile Device |
07-01-2013, 12:00 PM | #33 |
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Re: Best way to get to ~400hp, 454 tbi. Anyone build one?
people around really drank the ls kool aide didnt they? 400 horse out of a 454 is simple and will have tons more torque than an ls
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07-01-2013, 12:56 PM | #34 |
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Re: Best way to get to ~400hp, 454 tbi. Anyone build one?
yeah that ls kool aide is gooood too!!
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1991 GMC R3500 |
08-09-2013, 03:41 PM | #35 |
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Re: Best way to get to ~400hp, 454 tbi. Anyone build one?
I added one of these last week to my 454 TBI. Definately breathes better under hard throttle.
http://www.summitracing.com/parts/sum-239451
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1991 GMC R3500 |
08-09-2013, 07:00 PM | #36 | |
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Re: Best way to get to ~400hp, 454 tbi. Anyone build one?
Quote:
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"DON'T TOUCH THE TRIM!!"-Early Kyler |
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08-12-2013, 12:52 PM | #37 |
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Re: Best way to get to ~400hp, 454 tbi. Anyone build one?
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1991 GMC R3500 |
08-12-2013, 05:34 PM | #38 |
BAD BOW-Silverado XST
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Re: Best way to get to ~400hp, 454 tbi. Anyone build one?
Ram Jet it!! Aftermarket FI will wake it up.
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08-12-2013, 08:37 PM | #39 |
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Re: Best way to get to ~400hp, 454 tbi. Anyone build one?
GREAT MINDS THINK ALIKE
HERES MY AIRCLEANER |
09-27-2013, 11:57 PM | #40 |
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Re: Best way to get to ~400hp, 454 tbi. Anyone build one?
Meatwagon, When it comes to heads what are your thoughts on 781 or 049?
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1991 GMC R3500 |
09-30-2013, 02:44 PM | #41 | |
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Re: Best way to get to ~400hp, 454 tbi. Anyone build one?
Quote:
Ouch; "Although the PowerPack system comes with an initial price of $1775..."
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2009 Honda Fit CfC (bsf 44.9 mpg) 2000 Tahoe Limited 1991 GMC CrewCab Dually 2wd, will end up swb, not dually and replace CCswb below 1991 GMC CrewCab Dually 4x4, just going to fix things up for now 1982/1989 K5/GMC Jimmy 2wd 1987 GMC 1/2 ton swb 2wd Crew (sold) |
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09-30-2013, 06:53 PM | #42 |
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Re: Best way to get to ~400hp, 454 tbi. Anyone build one?
oops i didnt see this, they are both good heads and with work they will support 600hp, but for 400 they will do it stock, both are large oval
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10-01-2013, 01:04 AM | #43 |
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Re: Best way to get to ~400hp, 454 tbi. Anyone build one?
400hp from a 454 to my way of thinking is oval port heads and a decent cam with 10.5 to 1 compression and a carb.
When you add up all the costs from the add-ons it will be cheaper and you will have the power. |
10-01-2013, 04:20 AM | #44 |
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Re: Best way to get to ~400hp, 454 tbi. Anyone build one?
Peanut port heads still support 400hp it offer better torque production. Torque wins races. Hp sells engines
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10-01-2013, 06:45 PM | #45 |
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Re: Best way to get to ~400hp, 454 tbi. Anyone build one?
this is true as well
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10-01-2013, 07:15 PM | #46 |
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Re: Best way to get to ~400hp, 454 tbi. Anyone build one?
Torque at RPMs wins races. Torque down low is great for towing, burnouts and engines that won't hurt themselves because they're done at 5500. Best for street in a truck, you spend more of your time in it's power band than the higher strung fender shaker.
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10-01-2013, 07:50 PM | #47 |
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Re: Best way to get to ~400hp, 454 tbi. Anyone build one?
On the westcoast I don't see anybody using peanut ports on there 454's making 400 hp.They might be out there but you would really have to look to find one.
Does anybody make a decent intake manifold for peanut heads? or are they running oval port manifolds? |
10-01-2013, 08:08 PM | #48 |
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Re: Best way to get to ~400hp, 454 tbi. Anyone build one?
If it's a TBI, single plane oval and port matching of the head. There's an Edelbrock - Performer? - that's peanut or close to it and not very tall if you want to go with a carb.
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10-01-2013, 09:10 PM | #49 | |
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Re: Best way to get to ~400hp, 454 tbi. Anyone build one?
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The west coast has demon engines. The regularly build 400hp peanut port big blocks Posted via Mobile Device
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377 sbc thumpr cam autogear m23 muncie 3:73 Detroit trutrac 3''spintech prostreet mufflers xpipe 1 3/4 headers build thread !http://67-72chevytrucks.com/vboard/s...d.php?t=577217 Iroc gauge threadhttp://67-72chevytrucks.com/vboard/s...d.php?t=554511 |
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10-01-2013, 09:53 PM | #50 |
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Re: Best way to get to ~400hp, 454 tbi. Anyone build one?
http://www.superchevy.com/technical/...g/viewall.html
This engine? It made 119 horsepower more with oval ports. |
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