243 heads

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May 6, 2008 | 05:51 PM

fuzzyjk

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From: Cape Cod

243 heads

Will heads (243) from a 2005 Vette fit on a 2001 LS1? What is the increase in HP from the 241's.

May 6, 2008 | 06:36 PM

ABQ99TA

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Yes they will fit, as for HP my guess is 15 rwhp. I would spend $400 and send them to Texes speed and have them put there stage 2.5 head job and pick up 40-50 rwhp

May 6, 2008 | 08:35 PM

Shawn @ VA Speed

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Quote:

Originally Posted by fuzzyjk

Will heads (243) from a 2005 Vette fit on a 2001 LS1? What is the increase in HP from the 241's.

if you take the 243's and do a little port work and add the right cam you can get 425+rwhp out of your stock ls1 shortblock

May 6, 2008 | 10:54 PM

kingsey

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I have a set of plain 243 heads.

Who is the best porter for the money?

Im a bang for the buck kinda guy

May 7, 2008 | 02:48 AM

00MaroonZ28

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I got ported and milled 243 heads from Patriot and put down 435 at the wheel with them.

May 7, 2008 | 11:45 AM

99ssleeper

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I vote to use them stock with the right cam. The LS6 heads do not need any work to put down very good numbers.

May 7, 2008 | 11:50 AM

lgobraves

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I just put stock 243 heads in this past weekend. You can tell a difference about 4k, but there is next to no difference down low, even though it bumps up compression. Match a good cam with it and you can make good power.

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May 8, 2008 | 03:17 PM

GuitsBoy

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Installing untouched 243s is difficult to justify the labor involved in doing a head swap. Like everyone already said, get them ported!!! Instead of a 5-10 HP gain, youll likely see 30+ HP.

May 8, 2008 | 07:33 PM

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itsjustaSB

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From: indiana

ported 243 are great heads but if u dont have the money and are doing the labor yourself stock 243 with the right cam are still good deal i went from 400 400 to 430h and 420t with just changing heads