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Most GM TBI motors “flatten” out around 4000rpm and don’t make any more power.
We have engineered this GM TBI high flow throttle body which allows your motor to make power past 5500rpm & includes
GM 590cfm bored TBI w/ new throttle blades, profiled air horns, and new throttle shaft bearing
Fits: 1987-95 SBC 5.0L/5.7L & 4.3L V6Trucks, Z28, Firebird, Suburban, Tahoe, Astro, Yukon, Caprice, 9C1, Roadmaster, Impala, plus more
We have most all throttle linkage, IAC, and TPS sensor combinations for easy install
Good for 1987-95 SBC motors that make up to 340HP at 590cfm
Add our $9.99 injector spacer and get an extra 10hp
This is basically the same unit (well actually better) that CFM-Tech and Turbo City is selling for $379+ after core charge!!
OurTBI is halfthatOUTRIGHT w/ no core charge
We say ours is better because we rebuild the throttle shaft bearing (which most are worn out) and use custom throttle blades
What you Get: (This is for outright purchase w/ no core charge)
· High Flow bored TBI throttle body – 590CFM
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Winning bidders please include vehicle make, model, transmission type, original engine size and year, w/ your payment
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Installation Instructions: for installing your TBI and setting up for more HP
Will I need a Custom PROM? In most cases NO - you can use your stock PROM w/ higher fuel pressure and your motor will run great. However, bigger mods such as large cam, head modifications, larger displacement will want a custom prom for optimal economy and performance. We can help you locate this prom for a very reasonable price
Will the larger TBI clear my stock intake? Yes, your stock intake will match up perfectly w/ our 46mm TBI – no cutting, drilling, boring, etc
Can I use headers and custom exhaust? Yes – this kit is designed to work well with a high flow exhaust
How big of a cam can I run without problems? This varies by motor. We have run this kit on 350s w/ a roller cam at .450 lift, no more than 210 duration at .050” and 112 LSA without a custom prom. But again, a custom prom will make a hot setup like this run much better
How Much can I expect?
What Vehicles can we supply a 310HP TBI kit for?
- 87-95 TBI truck motors V6 4.3L, V8 5.0L, 5.7L, 305, 350, 383 up to 406 SBC
- 87-94 TBI F-bodies, Camaro, Firebird, Z28, Trans AM
- 87-94 Caprice, Roadmaster, Impala + more w/ TBI motor
- 87-95 Astro and full size Vans w/ TBI
Easy to install in about 60 minutes with simple shop tools.
Available add-ons: (you can find these in our ebay store, or ask us to set up a special auction)
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4.3L injector assembly - reman injectors, inj. pod, and new gaskets - $129.99
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5.0L injector assembly - reman injectors, inj. pod, and new gaskets - $99.99
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5.7L injector assembly - reman injectors, inj. pod, and new gaskets - $139.99
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9C1 policemotor injector assembly - $169.99
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BBC injector assembly (biggest injectors available) - $199
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TPS and IAC - $29 (this is for both - i.e. $29 total)
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Injector spacer - 1/4inch thick - $9.99
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stock or 46mm TBI base gasket - $2.99
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Please keep in mind these upgrades will need to be paid for at the same time as the TBI
Attention auction winner: Include vehicle make, model, year, original engine size and transmissiontype w/ payment
Payment and Shipping
Any questions or need more tech info - please email. We accept Credit Cards or electronic payments through paypal to confirmed shipping address only.
Combined Shipping
We do combine shipping when invoiced and paid with one payment. Please request a combined shipping invoice (before you pay) when you have completed your purchases on ebay
Exchanges, Returns, and shipping damage
Although it happens infrequently, we understand that at times you may order the wrong part, change your mind, or there is some other problem with the order such as shipping damge. In this situation, we ask that you email us a detailed description of the issue and we will do our best to resolve the situation. For shipping damge, the item needs to remain with the buyer and all packaging needs to be kept for the shipping carrier to inspect. In the event the item needs to be returned for an exchange or refund, please box up the item in the original box, with original packaging and return with paperwork inside that includes a copy of the item page you made your purchase from, your complete contact info, and your paypal email address. Once received, we will work with you to determine the best course of action to resolve the problem. Please see the complete return/exchange policy by clicking the "shipping and payment" tab just below the photos
Bidder Requirements:
Due to a handful of malicious bidders, we have been advised by ebay to institute the following bidder requirements. If you fit any of the following, you will need to email us first BEFORE bidding for approval or you will be considered an “unwelcome bidder” if: you do not have a paypal account, or you can’t pay with your paypal account. If you have less than 10 feedback. or If you have (or have left) any negative or neutral feedback. If you fit any of the above, please email first or you will be considered an “unwelcome bidder” Thanks
Thanks for looking and come back soon
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