i HAVE A 350 CHEV Engine (1988) WITH TPI fuel injection, Can i fit this to a new crate engine with plus 390hp?

Answer 1

Yes, if the NEW engine is ALSO a 350, but I'm not sure if it WOULD put out 390 HP with that set up on it. That HP rating is based on the assumption that you will install an induction system capable of feeding that engine properly.

Answer 2

depending on the heads...yes it will fit......but you won't see 390 hp out of the engine even if it was rated at that.....the tpi efi system was really only ment for the 305 engine....in its stock form the intake chokes off the 350 engine pretty bad....and if your looking to see close to those number's you will have to post and polish the upper and lower intake manifold.....it will also need a set of after market runners (slp holly so on)....injector's will also have to be changed to a bigger size (stock 350 tpi system had 22 lb per hour injectors)....a higher flow fuel pump will needed as well (walpro can be bought for around $110)......and after all that the computer will need to be tuned....but the tpi system will fit...but that crate engine won't run at its peak performance until the mentioned things are done...

Answer 3

The tuned port does no flow well at over about 4500rpms (because of the long intake runners) the 390 horse motor is meant to rev a bunch higher than that.

Answer 4

Is the 350 not enough power for you. You could have a Olds 307 (Y) motor thats rated 140HP & tops out under 3000 RPM. I say be happy with what u got unless you're building a race car.

Answer 5

no,i,ll tell you why ,the higher horse power engine needs more fuel to run,I'm up against the same thing right now on a project car,they do make performance injectors though that will help it a lot,but your almost going to loose horse power on this engine if you cant get a good fuel supply to it,and its going to need a good supply ,you may also have to increase you fuel line size that comes from the gas tank ,i already did this and it helped some,but you,ll need the best performance injectors you can get for that one,I'm only running about 365 horse power right now,but with what your going to have ,that engine is going to need all the fuel and fire it can get just to run good,you can check this web site out its jegsperformance .com. they have the injector set up you,ll need for this one,i just got done installing some of theirs and they work excellent,I'm still waiting on a good test drive to see actually how well its going to do,check them out though ,they have some pretty interesting things that you might find real helpful on what your thinking about doing,good luck with it i hope this help,s.

Answer 6

No, because the new engines are smaller than the engines in that time period.