Junkyard heads

**Pony_Eater** · 04-19-2009, 08:05 PM

are there any heads that can bolt straight onto our LS1's for cheap.. I dont want to put in a cam right now but i am looking into heads..maybe some 243's or 5.3's......can 5.3 truck heads work and off wat year?/whats the casting #? how much milling needs to be done/porting?

My car is a DD 2000 T/A ws6 m6 with 43000 miles ..lid and smooth bellows/catback exhaust...PP TB

Im looking to get 380rwhp I will be buying headers soon and an LS6 intake

**TARZAN** · 04-19-2009, 08:28 PM

Your best bet will be 243's. They'll be the most quick purchase and bolt on HP.....but if you're willing to put a lil effort into 5.3's, they're a GREAT budget head.

If you're going to be installing heads and an intake, it'd be kinda crazy not to do a cam. You can find cams all over the internet for $200 or so.

-Will

**Pony_Eater** · 04-19-2009, 08:34 PM

ya i might just have to do a heads/cam
I just want to keep it a budget project that is really streetable bcuz its my dd...i prob wont get to do a swap untill next winter anyways bcuz im gonna try to get my headers/ls6 intake/suspension all squared away by the end of summer

any suggestions on a budget heads/cam......should i go with a package? or should i piece the heads together by getting some 243's and puttin the ls7 lifters and ls2 trays and everything?

**c5z28** · 04-19-2009, 08:48 PM

Originally Posted by TARZAN

Your best bet will be 243's. They'll be the most quick purchase and bolt on HP.....but if you're willing to put a lil effort into 5.3's, they're a GREAT budget head.

If you're going to be installing heads and an intake, it'd be kinda crazy not to do a cam. You can find cams all over the internet for $200 or so.

-Will

I see where the op is coming from though it's not just $200, you need the timing chain, oil pump, pushrods, valvesprings that's an easy $400 extra for used parts.

**c5z28** · 04-19-2009, 08:53 PM

Op due to my budget I will be doing a head swap only soon in the near future if you check my latest thread. If your doing head only the cheapest would be some used 5.3's, you can pick up some 243's for 500-600 all day but that's stock on 15-20rwhp. You can pick up some worked 5.3's for 800-900. If the guy I bought them from gives me my damn heads I can hopefully have this situated by the end of the month, we'll see what this bolt-on auto put's down.

**Pony_Eater** · 04-19-2009, 08:55 PM

how much rwhp would 5.3's net?

**c5z28** · 04-19-2009, 09:07 PM

If you glanced my thread you would see hi-po said he netted 373hp, 407tq w/ worked 5.3's and ls1 manifold
http://www.ls1.com/forums/showthread.php?t=111735

**Pony_Eater** · 04-19-2009, 09:14 PM

well it says he had a 6.0 block on there so i was wondering wat it would net on a stock ls1

**c5z28** · 04-19-2009, 09:20 PM

Hopefully I will know in 2 weeks or less lol.

**Pony_Eater** · 04-19-2009, 09:21 PM

if you remember to send me a PM

**c5z28** · 04-19-2009, 09:23 PM

Originally Posted by Pony_Eater

if you remember to send me a PM

I will and check the internal section.

**SSnaked** · 04-22-2009, 09:50 PM

Are you trying to keep it smog legal... I was told if using the 5.3's and bumping up compression you may run into problems, especially if camming... Just thot i'd add that in seeing your from CA.