This won't be a direct bolt on as some work will be required to set it up, tune it but there is an inexpensive Supercharger sold on Amazon.com that can support up to 150 HP. Its pretty low cost, around $160 and am attractive option for boosting power. Take a look on Amazon
------------------ " THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite. "THE COLUSSUS" 87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H " ON THE LOOSE WITHOUT THE JUICE "
[This message has been edited by Dennis LaGrua (edited 09-26-2024).]
Just my opinion here, but I don't think that supercharger would make enough HP to offset what it robs due to parasitic losses.
Check out Amazon for the supercharger for 2 -3.5L engines. There is always parasitic loss with a belt driven supercharger but the power they add usually overcomes that. After checking the $160 unit will only work on engines less than 2.0 L. The larger supercharger may work on a Duke engine but you would have to find a way, to add fuel, a larger throttle body, re-curve timing and not go too high on boost.
------------------ " THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite. "THE COLUSSUS" 87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H " ON THE LOOSE WITHOUT THE JUICE "
Check out Amazon for the supercharger for 2 -3.5L engines. There is always parasitic loss with a belt driven supercharger but the power they add usually overcomes that. After checking the $160 unit will only work on engines less than 2.0 L. The larger supercharger may work on a Duke engine but you would have to find a way, to add fuel, a larger throttle body, re-curve timing and not go too high on boost.
was actually considering this on a duke and it's actually pretty easy but the block needs studs since the stock head bolts are already pretty much fully yielded and won't take much more in most cases (at least with felpro bolts these days. broke a few off in my built engine and I'm still fuming) so we (me and idiot friends) have tried doing this same thing to a ford 300. an amr 300 supercharger.making 6 psi though a dual cone filter setup will actually add around 45-60 horse if you can actually make the flow happen through the head the solution to he throttle body an extra fuel is to cobble a 4.3l v6 throttle body on with its dual injectors (can be wired separately with a little knowledge and effort. mostly by making the second injector recive the normal pulses but interupt them with a contactor normally) to a custom intake/adapter and timing recurve is as simple as grabbing a computer/ vaccum advance distributor from truck iron duke or chipping the ecm.
was actually considering this on a duke and it's actually pretty easy but the block needs studs since the stock head bolts are already pretty much fully yielded and won't take much more in most cases (at least with felpro bolts these days. broke a few off in my built engine and I'm still fuming) so we (me and idiot friends) have tried doing this same thing to a ford 300. an amr 300 supercharger.making 6 psi though a dual cone filter setup will actually add around 45-60 horse if you can actually make the flow happen through the head the solution to he throttle body an extra fuel is to cobble a 4.3l v6 throttle body on with its dual injectors (can be wired separately with a little knowledge and effort. mostly by making the second injector recive the normal pulses but interupt them with a contactor normally) to a custom intake/adapter and timing recurve is as simple as grabbing a computer/ vaccum advance distributor from truck iron duke or chipping the ecm.
I would say that you are on the right track. Are new head bolts available? If so its a good idea to change them or ring the heads. . Its logical to assume that the Duke engine can be boosted but I would say not more than about 5 psi. Boosting increases the volume of air in a given space so at low boost head porting may not be necessary. I agree that a larger throttle body and tuning retard must be used. With mods and an adapter plate a larger TB can be made to fit the intake manifold. MSD sells an ignition box that you can adjust the timing on from the dash. While I have built four boosted engines, there's no experience here to share on the Duke. Ran them hard, followed the rules and there were no blow ups. Good luck on the project.
------------------ " THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite. "THE COLUSSUS" 87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H " ON THE LOOSE WITHOUT THE JUICE "
I would say that you are on the right track. Are new head bolts available? If so its a good idea to change them or ring the heads. . Its logical to assume that the Duke engine can be boosted but I would say not more than about 5 psi. Boosting increases the volume of air in a given space so at low boost head porting may not be necessary. I agree that a larger throttle body and tuning retard must be used. With mods and an adapter plate a larger TB can be made to fit the intake manifold. MSD sells an ignition box that you can adjust the timing on from the dash. While I have built four boosted engines, there's no experience here to share on the Duke. Ran them hard, followed the rules and there were no blow ups. Good luck on the project.
yes and no? there are studs available but they are custom order from a different gm engine. I forget which but did use to have it written down. also kind of a maybe statement isn't it? let's say we have 3 psi through a highly unrestricted intake into the supercharger well that will probably preform better than 6 psi through the same supercharger when it's having to work harder to draw through a much more restricted filter (source is banks power and psi being more of a statement of how much flow if you do it right) there is quite a few "gotcha" things with the fiero Iron duke specifically though. the heads are super weak and prone to cracking as there's still quite a few bad castings out there, the block itself isn't really too strong with how porous and thin it is in critical areas,they really all benefit from a girdle to help the mains not flex under heavy load (like a boosted engine) and the block should absolutely be wrapped and shrouded for safety and fire protection incase a rod decides its time to play peek-a-boo
