1984 Throttle Body
Melting Slicks
Joined: May 2002
Posts: 2,263
Likes: 414
From: Muskogee OK
Cruise-In VI Veteran
Burning Brakes
Joined: Sep 2017
Posts: 933
Likes: 165
Pro
Joined: Mar 2006
Posts: 519
Likes: 142
From: Caribbean/Florida
Hope you put a nice cam some roller rocker arms 1.6:1 and a good header to make those heads breath. Have fun porting and polishing your intake. Next spring let us know your results. The TPIS SuperL98 Cam is mild but should give you a nice boost over stock. Good Luck...
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Melting Slicks
Joined: Mar 2002
Posts: 2,874
Likes: 764
From: Sligo PA
Years ago before I LS swapped my 84 I built a 383 with Edelbrock heads an Xram intake and a comp cams marine roller cam. I sent the throttle bodies out to be bored out bigger. I had to buy bigger throttle blades to do it and sent those with the bodies to get bored. Then I used the "cop car" injectors and tuned it with a 7747 ECU. A forum member named Dominic helped me tune it.
Not sure how much the bigger throttle bodies helped. But it wasn't that expensive to have done. Eventually I wanted more power than I was ever going to get with that setup so I LS swapped with a 4L80e. But the 383 ran ok. It was way too expensive overall though. A junkyard 5.3l with a cam would make more power.
Not sure how much the bigger throttle bodies helped. But it wasn't that expensive to have done. Eventually I wanted more power than I was ever going to get with that setup so I LS swapped with a 4L80e. But the 383 ran ok. It was way too expensive overall though. A junkyard 5.3l with a cam would make more power.