I Need help 410 Stroker timing Carb Education
Advice for
1 do I rebuild an old 800 Holley double pumper spread bore(it's under my bench)
2 advice on carb and timing settings base timing mechanical advance do I run any vacuum because this is still a street car
Or is that the max performance on stroker ?
HELLO fellow Manitoban,
You installed your cam at 6* retarded?
That would be in at 116* right?
With 10.2 Scr right?
Why?
The math says at 108mph you should be trapping at 5160 at zero-slip; say 5680 at 10% slip in the TC. So you'll be wanting a power peak around 5380?
My 367 went 106@3650 me in it, with a 270/110 cam, so IMO, your stroker should have a lot more in it. At those stats; 3500 RACEWEIGHT, The Wallace Calculator says your stroker is rocking ~335/365 hp
But something is wrong in the stats;
By the trapspeed it shows 335hp, but
by the ET 367hp
which is backwards..so, I think that is pointing to either;
Wrong raceweight; at 3700 Raceweight, you in it, she spits out , 357hp; That's more like it
But if in fact 3500 is correct, then the crossed numbers may be pointing to the retarded cam. And the small carb MAY not be helping. So, before I would mess with the carb, I would fix the cam-timing; IMO; You need to put the cam back to about 108, on account of, in at 116 is messed up.. And then you may find that the trapspeed will want less rear gear, which is sorta unusual.
But as a street car;
Yes you ought to keep the vacuum advance.
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