400+ CID with 243's?

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Aug 15, 2015 | 12:46 AM

JWStevens

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400+ CID with 243's?

I'm considering buying a 400+ inch short block but I've got a nice set of ported 243's. Has anybody done this and had good results? Its my daily but I still want it to be fast.

Aug 15, 2015 | 01:38 AM

kinglt-1

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From: Ft. Wayne, IN

Yes there are a few threads in the dyno section of 418" strokers making 550whp with a quality 243 head and fast intake.

Aug 15, 2015 | 07:59 AM

01ssreda4

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Yep, I believe it can be done successfully. It may not be 100% optimal for an all out NA engine but should be a very nice driver.

Aug 15, 2015 | 08:32 AM

HCI2000SS

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From: Howell & Fenton MI

If it's truly your "daily driver" I'd by a beater first lol

Aug 15, 2015 | 10:24 AM

JakeFusion

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The TEA Stage 3s made 600rwhp back in 2005 on a 440.

They are lousy heads, obviously.

Aug 15, 2015 | 10:51 AM

redtan

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Ported nicely and big enough valve they can be made to flow 330+ cfm which is going to be pretty good even for a 402 size stroker. Velocity might suffer down low, but with a stroker and decent compression you'll make plenty of torque down low to make up for that.

Aug 16, 2015 | 08:05 AM

sbf

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From: Wilson n.c.

Quote:

Originally Posted by redtan

like stated above its a few have used the 243 heads and made alot of power i plan on using my tea 243s on a 418

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Aug 16, 2015 | 12:30 PM

redtan

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From: Belmont, MA

Think they just have bigger valves, 2.08 and 1.60. The porting is usually the same.

Aug 16, 2015 | 12:36 PM

#10

SS69LS1

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From: Pensacola, FL

I'm running texas speed 243s w bigger valves on a 402, 11.5 comp, fast 102, 235/242 111 and it made 537 to tires.

Aug 16, 2015 | 12:38 PM

#11

redgto4u

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I'm running ai 243 heads on my 418. They perform very well imo. Sure I could of put some really nice afr 245's or even a set of ls3 heads on it. I had these heads already and had to stop somewhere!

Aug 16, 2015 | 05:35 PM

#12

01ssreda4

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From: Turnin' Wrenches Infractions: 005

Quote:

Originally Posted by redgto4u

I'm running ai 243 heads on my 418. They perform very well imo. Sure I could of put some really nice afr 245's or even a set of ls3 heads on it. I had these heads already and had to stop somewhere!

No ****. Budgets get blown out of the water just trying to make a quick and fun street car.