Dont4GetToWipe

I've got to pull my stock 706 heads to get a couple header bolts out that broke on me. My question is should I get my stock heads P&P or buy a set of used 243's?

N20zuki

Why not remove the broken header bolts? I removed 3 from my engine when I got it in 20min... Its not hard...

JDC

iTrader: (3)

If you put 243's on you'll also need to have them milled about 0.030 for no loss of compression.

Camin00

Probably be cheaper to buy 243's or 799s for $3-400 and have them milled .03 for $100ish than to pay for porting.

If you mill them you will need to check for proper pushrod length.

I have ls7 lifters and milled .03 862s with stock height head gaskets and use a 7.375" pushrod

If you mill the heads I'm 95% sure 7.375" push rod would be your correct length, but every motor is different so check.

Camin00

something to think about, 243s will make your 5.3L lose a little bottem end power b/c of the larger runners. probably gain 15-20 at the motor with 243s
this route $600ish
or

You could fix your head bolts and have the 706's milled to bring your compression close to 10:1 which will give you more bottom and top end power. Probably 10-15 at the motor. this route $200-300ish

You could by a cam with the $300 dollar difference

Dont4GetToWipe

Well my point is, I have to pull the heads to fix the header bolts. So while they are off I might as well get some work done on them. No sense in pulling them twice. My local shop said they charge $750 for a full port and polish. so I didn't know if it would be cheaper and better for me to just buy some 243's.

Camin00

yes it would be cheaper, but you will get more out of Ported 706/862s than you will stock 243s, and keep or raise compression.

Blackpanther99

iTrader: (8)

I would at LEAST get them milled if not planning on boosting. If your in the budget, get them ported as well.

Dont4GetToWipe

I suppose the ideal thing for me to do is to find a set of 243's and have them P&P?

Camin00

Is the motor a 6.0 in you sig? the ss?