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427 FORD DYNO RUN!!!!!!!

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Big Block LS. Why not? 1 Reply

Started by John Derek Mitchell. Last reply by Chris Aug 13, 2013.

Throttle Body Injection swap to Tune Port Injection

Started by John Munrow May 23, 2013.

sbc 383 starter to fly wheel 4 Replies

Started by jay pimentel. Last reply by jay pimentel Dec 13, 2012.

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Comment by THOMAS E EVERAGE JR. on July 12, 2009 at 7:26pm
Comment by Kevin Lee on July 12, 2009 at 7:21pm
One, what year is your Suburban? Secondly, unplugging the MAP (Manifold Absolute Pressure) sensor will cause the computer to default to open loop status, and fatten up the fuel mixture.That is covering up the misfire, giving you false diagnosis. That is also why it dies when the A/C is on. I can give you a lot more ideas, but need to know what year it is so I know the setup.
Comment by David Foster on July 12, 2009 at 4:15pm
thanks, i will keep that in mind. the engine is due for a rebuild soon. it has 345,000km on it so when its rebuilt im adding some goodies to it
Comment by Kevin Lee on July 12, 2009 at 2:35am
Good to hear that the intake isnt leaking. If it should though, use Fel-Pro gaskets. They came up with a superior design over te stock ones. Just make sure the intake isnt pitted too bad around the coolant ports, and it should be fine after that. Just some info if you will ever need it
Comment by David Foster on July 11, 2009 at 8:15pm
ended up cutting the tube to get it out of the intake
Comment by David Foster on July 11, 2009 at 8:12pm
thats it exactly! intake gasket luckily seems to be good
Comment by Kevin Lee on July 11, 2009 at 5:39pm
I know exactly what you are talking about. I have torn many of those apart for intake gaskets leaking. It comes off the left exhaust manifold, up the back and follows the intake where it goes into the left front
Comment by David Foster on July 11, 2009 at 5:11pm
The headers are finally in!. it took a little more work then i had anticipated but the end results are very satisfying. Thank you to everyone who offered me there advice in removing the EGR fitting from the exhaust manifold i tried quite a few of your suggestions but to no avail, until i went to the local Chevy dealership to find out what i needed to do to get the fitting out. and to order a new EGR tube incase i broke the old one..... turns out the EGR tube and fitting are made out of Aluminium and it was put in to a cast iorn manifold that would be exposed to lots of heat.. so needless to say those 2 pieces are now a very solid one. to any one wondering what im talking about this was on a 1996 VORTEC 350
Comment by joe on June 6, 2009 at 9:03pm
thanks man will find out how it is balanced.. i can wait to how much difference it makes in power.. i have a set of 4.88 gears for it after the engine swap!!!!!!
Comment by Kevin Lee on June 6, 2009 at 9:34am
That should be a pretty straight forwards swap. I would make sure you use the balancer form the 5.4, and you might need a flywheel for a 5.4 also as I am not sure of it is externally balanced or not. If it is, the 4.6 flywheel would put it out of balance and it will shake a lot. Otherwise, use your electronics and ignition on the 5.4, and everything else should bolt right up

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