340 Stroker

[dodgeman360]

Finally got to the point I get to build my motor. So far I have got an Eagle 4340 crank 4.00" stroke, eagle Hbeam rods, Ross forged Pistons, Got my cam on the way from Racer Brown, He said either set of heads I have would do great. My Question is witch set do y'all req. I have a set of 302's ported out and a set of Magnums, Witch set for this torque monster??
Keep in mind this is in a 76 d100 pick up, not a drag car!!!
With a 518 trans and 3.55 out back
full body 4100lbs

[dave571]

From what I've seen magnums are the better pick.

member 345dart runs magnum E heads on his 388, and is very happy with them.

I've heard good things about the 302 heads too, but not usually used on a motor that large.

[dust]

Originally Posted by dave571

From what I've seen magnums are the better pick.

Same here, have you priced out the valve train completely yet? If you are going after market, then Magnum is alot more expensive.

[dodgeman360]

I allready have the valve train for both minus the push rods and lifters for the magnums, just curious if the 302'sare going to be enough?

[dodger1]

302's are closed-chamber small-valve, small-port heads for a 318. I'd be reluctant to use them on a 400 inch engine. Don't know if they can be opened up enough to do that, but there's been a few discussions here on the 302's vs similar closed-chamber 308's for a 360

[kick_the_reverb]

Originally Posted by dodger1

302's are closed-chamber small-valve, small-port heads for a 318. I'd be reluctant to use them on a 400 inch engine. Don't know if they can be opened up enough to do that, but there's been a few discussions here on the 302's vs similar closed-chamber 308's for a 360

Agreed on the 302 being too small for a stroker, but gotta correct you on the 308 comment - they are OPEN chamber.
Ran

[345Dart]

Originally Posted by dodgeman360

Finally got to the point I get to build my motor. So far I have got an Eagle 4340 crank 4.00" stroke, eagle Hbeam rods, Ross forged Pistons, Got my cam on the way from Racer Brown, He said either set of heads I have would do great. My Question is witch set do y'all req. I have a set of 302's ported out and a set of Magnums, Witch set for this torque monster??
Keep in mind this is in a 76 d100 pick up, not a drag car!!!
With a 518 trans and 3.55 out back
full body 4100lbs

Is the block set up for shaft mounted rocker oiling - if not 302s are out. If you use the Magnums(which I would) you will need to clearance the pushrod clearance holes in the magnum heads as the angle of the pushrod is different when using a LA block - and oil through lifters and hollow pushrods.