my miles are getting kindof high what to do? i kinda want to do a 383 stroker, all i need is the 383 stroker kit right? no boring of extra parts? what brand should i go with? how much power should i expect? they say 400 plus horse? is that obtainably with the parts i have and i will do headers before then.and also what heads and cam should i go with, a lt4 setup they claim 425 horse power or more with jsut the converison is this possible and i have 95000, i shouldnt jsut rebuild the top half my bottom end isnt goign to alst is it?
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1994 firebird formula
no need to talk. i can walk the walk. -
Depends what you mean by a "kit". If you buy a "383" rotating assembly, you will get a crank, connecting rods (you specify desired length) and a set of 4.030" pistons with rings. You will need to get your block bored out to 4.03x". You will need to have your main bearings align bored to insure the crnak will be straight. You will need to have the block "clearanced" so the connecting rods don't hit it. Your oil pan may have to be "dimpled" to clear the crank. You will probably want to have the stock oil pump blueprinted, a pickup of the correct length and diameter tack welded to the pump, and an 80psi spring added to the pump. Probably a few other things you might want to do while its apart.
You need to consider an upgrade to the timing set - cam and crank sprocket and chain. Point is, if you buy a "kit" you still have work to do. If you don't want to do that work, get a 383 "short block".
The LT4 conversion will be closer to 400 flywheelHP.... maybe a little more, but 425HP was arrived at with a few extra parts, no accessories on the engine and tuning via a $3000 aftermarket ECU. With a good set of LT1 heads and a decent cam, you would probably be at 450 flywheel HP fairly easilly (LT4 HOT cam is too small for a 383).Fred
381ci all-forged stroker - 10.8:1 - CNC LT4 heads/intake - CC solid roller - MoTeC engine management - 8 LS1 coils - 58mm TB - 78# injectors - 300-shot dry nitrous - TH400 - Gear Vendor O/D - Strange 12-bolt - 4.11's - AS&M headers - duals - Corbeau seat - AutoMeter gauges - roll bar - Spohn suspension - QA1 shocks - a few other odds 'n ends. 800HP/800lb-ft at the flywheel, on a 300-shot. 11.5 @ 117MPH straight motor -
so if i just rebuild my top end how long will my bottom end hold out with all the abuse?1994 firebird formula
no need to talk. i can walk the walk.Comment
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