If im swaping my 305tbi to a 305carbed engine do i have to change my fuel pump? If so what kind do i need and what and where is the best place to get one? THANKS

 

There's a write up about it in the "Tech Articles" on the homepage of a really kool website called WWW.THIRDGEN.ORG

You should check it out.

 

You are going to have to check out the tech article. It is not just as easy as some people make it out to be.

 

Hay dumbass why didnt ya just ask me you helped me do that to my old camaro. Your fuel pump is fine you just need a fpr. Holley has one for like 20 bucks.

 

Don't use an AFPR that regulates by dead-heading the pump. 3-port types with return typically run a lot more than 20 bucks.

 

i didnt find it too difficult to change from tbi to carb. you will need a few new parts though, including carb, manifold, fpr (3 port type like everyone says, mine was $80), and distributor. besides that, i kept my wiring harness hooked up so that my alt and fuel pump worked. you will have to adapt the 2-wire harness to the distributor (so that your new one works). i also have noticed that you need to turn the dist. a bit if you have the in cap type because you wont have enough clearance behind it. but besides that, ive been running a carb for about a year now with little to no problems (any of them being my fault of course ). but give yourself a weekend so you have enough time to work and run to the parts store. and also read the tech article.

 

You could always get a carb pickup from a wrecking yard and swap your TBI fuel pump out for it. Then get a generic electric carb pump.


Don't forget to deal with the lock up.

 

that my good sir, is the best piece of advice one could have given

if you dont deal with it (either with a $200 ish hypertech part or a custom fabbed switch or a neat vaccuum operated no user intervention setup) then youll kick your own *** for wondering where your gas mileage went

 

what's the name of the hypertech part? i'm doin the same thing

 

cant find the hypertech TCC lockup (i think it mighta been posted on here)

but i found this which i think i like better: http://www.northernautoparts.com/Pro...ctModelId=5992

 

Thanks for the help. By the way how much will it kill my gas milage? THANKS

 

Rig a lockup setup for your TH700R4 and properly tune your carb. If you have selected a carb suited to your engine (ie no 1050cfm dominator) like a 600cfm Holley DP or VS then you may actually gain mileage.