How much does a 305 TBI engine cost?
You can get them for about $50 on ebay just search for THUNDERBOLT 3 CATALYTIC and you should fine one. Then a 3″ pipe back to the muffler will dramatically help that little 170hp 305 get another 15hp and its mandatory for any decent engine upgrade.
What’s the casting number on a TBI 305 head?
Those are the last 3 digits of the casting number on top of that head under the valve cover. These heads flow as well as pretty much any other 305 compatible head out there and respond very well to some porting and good for nearly 30hp over the TBI 305 heads.
What should the fuel pressure be on a 350 TBI?
From 370-440hp you need to bump the fuel pressure up on the 454 injectors to the 15-18psi to increase their flow rate to 100lb/hr.
Can you change the throttle body on a 350 TBI?
Modify the throttle body. This one pretty cheap but does require removing the throttle body. UTIMATE MODS . Stock 42mm TBI units flow around 450cfm which if you look at http://www.carburetion.com/calc.asp a stock 350 even with a cam upgrade to increase the powerband to 5500 rpms isn’t going to use much if any more than that stock throttle body.
Where is the fuel injection switch on a 1989 TBI truck?
Small HEI Distributor with Externally Mounted Coil or Large cap (internal coil) distributor. It must be fuel injection style with 4 wire feedback to the ECM MAP Sensor (located on passenger side of intake manifold and can be moved to the firewall) Part # SU105 Two Terminal Oil Pressure Switch for 1989 TBI Truck (Part number PS215)
How much horsepower does a TBI fuel pump support?
First I start with a new Fuel pump, STOCK 75lph TBI fuel pump will only support about 230hp before the fuel pressure drops like a rock.
You can get them for about $50 on ebay just search for THUNDERBOLT 3 CATALYTIC and you should fine one. Then a 3″ pipe back to the muffler will dramatically help that little 170hp 305 get another 15hp and its mandatory for any decent engine upgrade.
Can a catalytic converter be removed from an OBD 1 truck?
SInce your OBD 1 truck only has a single O2 sensor that monitors the air/fuel ratio located before the catalytic converter, you wont have an issue if you remove teh catalytic converter.