allansmithee Posted April 3, 2022 Report Share Posted April 3, 2022 Hi guys I have a 94 sedan deville with a 4.9 pfi in it and I'm looking into boosting my hp. I know the 4.9 doesn't have much support and I'm very limited but I'm wondering if anybody has any ideas? At the moment I'm looking at advancing the timing, a new exhaust, bigger injectors, new ignition system, an allante 4.5 intake manifold, and I've also heard my transmission could handle a 35-75 shot of nitrous. Is there anything else I should look into that you guys know of? Quote Link to comment Share on other sites More sharing options...
Bruce Nunnally Posted April 3, 2022 Report Share Posted April 3, 2022 Welcome. The 4.9L OHV is a good V8 overall. You can find my notes on mods I tried with my 1992 STS with 4.9L here: http://www.caddyinfo.com/92sts.htm allansmithee 1 Quote Bruce 2023 Cadillac CT4-V Blackwing Follow me on: Twitter Instagram Youtube Link to comment Share on other sites More sharing options...
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