supercharged 5.0

New motor runs like crap. Ignition is set at 10 degrees btdc with spout removed. Fuel pressure is set at 40 psi . Think it may be the cam timing which i retarded 4 degree's to get 108 centerline. Any ideas

projectresto83

Maybe bc you set it 4 degrees off??? Put it back to 0 and see how it runs. What is your motor doing exactly???

supercharged 5.0

To get it to start you have to pump the gas[ it is fuel injection]. Then once it is running it sputters on bottom end . Once you rev it up above like 3500 rpm it seems to clear a little . It wont stay running unless you keep up to 1500 rpms. I wanted to see if anybody else out there is running this cam and did they run it straight up or what.

Joel5.0

Assuming your results from the cam degreeing were correct (didn't get the @.050" intake tappet open/close events, right?).... the other question comes to mind, did you check for the correct PR length, lifters preload? BTW.... "putting it back to 0" would mean to have the Stg 1 with a +8° advance.

projectresto83

I meant put the cam back to the 0 not the dizzy. But if it is installed correctly the cam should run pretty smooth.

Joel5.0

So did I...... based on the Stg 1 specs the "theoretical "0"" would be to retard the cam an additional 4°..... or ICL = ECL = LSA = 112°, the Stg 1 though, should have a 4° advance in its grind........ 108° = ICL, 116° = ECL.... which would be the grind # spec for that cam.

50Trippin

I run a TFS1 "straight-up" and don't have any issues except for a warm start-up bouncing idle which I think is caused by my 76mm C&L.

I run 2.02/1.60 aluminum heads/TFS1 cam/30# injectors/gt-40 tubular intake.

Idles @ 750-800 rpm just fine. Screams right up to the factory rev limiter. Bucks only if I try driving in first gear under 1300 rpm.

Joel5.0

"Straight-up" could be anything around 4° advanced or retarded based on the cam card.... reason why degreeing a cam is a must.......

mjr46

put cam timing back so the two dots line up and most likely your prob will be soved if this is the only change you made and now it runs like crap