I know I like to throw out different combos and such just so I can learn, but how do you make a 496? I mean, I know a 383 is a 350 with either a 400 crank+400 rods+350 pistons OR 400 crank+350rods+400 pistons (at least, I think that's right...). Is a 496 a 454 with bigger (I guess have to be aftermarket?) crank +454 rods+496 pistons OR 496 crank+496 rods+454 pistons, going along the same lines as a 383. Do you have to possibly worry about maching rods to clear the cam and other things just like a 383?

And on a side note, a 454 would fit in my '71 Chevelle just fine without needing new heater box/brake booster/radiator etc, yes? Just basically new motor mounts?

It's a 60 over 454, with a 4.25" crank.

bbc should fit fine the car was designed for one.

Yes, the clearances on a stroker big block need to be checked just like on a small block stroker moter.

Also, you can't just take 454 pistons and rods, put them on a bigger stroke crank(4.25" vs 4") and expect them to work. You might be able to use 454 rods, but pistons are matched to the stroke of the crankshaft.

Mike

What Mike was alluding to... If you used stock 454 pistons and rods with the 1/4-inch stroker crank, then the piston would stick about 1/4 inch above the deck at TDC (since the stroke is 1/4 inch more)... Stroker pistons will have the piston pin location altered so that the top of the piston will will be about the level of the deck at TDC...

OK, you can use stock BB rods with a 4.25" stroked crank BUT more then likely the crank will have to be cam-cut so that even though you are using stroker pistons that have the pin location moved up an 1/8th inch, you still have to deal with the pistons coming down in the hole the other 1/8th inch that makes it a 1/4" stroker!!

If the crank isn't cam-cut so the shorter stock rods will allow the stroker pistons pin bosses to clear the counterweights it won't work!!!

Plus, cam-cutting the crank will more then likely require it to now have to be balanced with Heavi-Metal since so much of the counterweights have to be cam-cut off to clear the piston bosses. Therefore balancing costs a lot more!!

Save yourself the hassle and buy a standard 1/4" stroked crank and at least 1/4" longer custom rods and correct pin height needed pistons to save yourself the hassle...

Been there, done all this!!!

pdq67 and his "tow-truck" 496 motor!!

PS., and ooooh the Force is Strong on the Dark Side with a 496...

Originally posted by soccerguy045:
I know I like to throw out different combos and such just so I can learn, but how do you make a 496? I mean, I know a 383 is a 350 with either a 400 crank+400 rods+350 pistons OR 400 crank+350rods+400 pistons (at least, I think that's right...). Is a 496 a 454 with bigger (I guess have to be aftermarket?) crank +454 rods+496 pistons OR 496 crank+496 rods+454 pistons, going along the same lines as a 383. Do you have to possibly worry about maching rods to clear the cam and other things just like a 383?

And on a side note, a 454 would fit in my '71 Chevelle just fine without needing new heater box/brake booster/radiator etc, yes? Just basically new motor mounts? Don't forget about a good flowing radiator, Th400 tranny of equal of your choice, depending on application, headers, possible new starter, torque converter, etc....all the lil miscallaneus parts.....have fun!