Hi-test 403

Kennybill

Active member
Oct 3, 2018
203
128
43
Braceville Ohio
Wow, dyno sheet says it all.

 

Olds 307 and 403

Active member
Oct 4, 2018
686
222
43
Melville, Saskatchewan
I considered using the stroker pistons I have with that crank and 5.7" rods. Mark said it would wear the bores out quickly, so I guess 424 ci will do.
 

Kennybill

Active member
Thread starter
Oct 3, 2018
203
128
43
Braceville Ohio
Yes, Smokey Yunic always said, "put the longest damn connecting rod you can"
Easier on the cylinder walls and the piston dwells longer at TDC.
 

Kennybill

Active member
Thread starter
Oct 3, 2018
203
128
43
Braceville Ohio
All I can say is DrDan has a lot of cha-ching $$ in this engine. He must have faith in the 403s if built correctly. I'd shift this engine @ 5,400 and whatever it sings to it the traps, so be it. I'd error on the side of caution but that's just me.
 

Similar threads