Post dyno numbers for 383-388 strokers
Stock un-ported LT4 intake
AFR 195 Heads (race ready version) Flow 260 cfm
Comp 503 cam w/1.6 rockers
Mid-lenth 1-3/4 headers with full exhaust.
MTI mail order tune
370/370 Rear wheel horse and torque through an automatic.
New motor is done; it makes the old motor look stock.
On a 383 I would think this combo would make more hp (due to less friction?)...
My old combo
401...LE ported AFR 210's, Custom HYD Cam 23x/23x 11x lsa, E-pump, 58mm T-body, Speed Secrets Custom Raised/Welded Lt4 intake, 12.5 to 1 compression, Hooker Long Tube Headers, E-cutout, Strange 12 bolt 3.73 gear and 4L60E with PI3200 converter.
460HP/420TQ SAE with locked converter.
Through a manual with stock rear, 485ish SAE would be about what your looking at....manual numbers to 500ish with a good Mechanical roller setup....
Hope this helps a little....
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383 11.2:1
Callies, Oliver, JE rotating assembly
LPE/E.B. Ported LT1 castings with 2.00/1.56s
226/234 Joe O./Erson cam
Kooks stepped LTs, Borla cat back (at time of dyno)
A4 w/ Vig 3600
Strange 12 bolt with 3.73s
Haven't gone back to the dyno with new 3" TDs...
--Alan
BUT...imho, dynos are just for tuning...mph at the track is where its at...
i get tired of hearing kids at school talk about horsepower numbers. to me, they dont mean a whole lot. they are good for testing different setups and tuning. when a company says something will make so much power, is that at the flywheel or rear wheels? there are a bunch of factors that go into this. and kids dont understand that torque and its location in the rpms make a difference too. if you cant stay where the horsepower is at, then your not making/using the horsepower. one advantage to an m6 is that you can stay in higher rpms more. anyway, im just saying to me, horsepower doesnt mean a heck of a lot.


lol
