how to get more power from stock heads

[Semperfiws6]

i have heard that you can make more power getting your stock heads reworked than buying aftermarket. is this true? if so, what specs would a machine shop have to be told?

[mrr23]

most of the aftermarket places are using stock heads and porting them. AFR and the new Patriot heads are new heads.

[Semperfiws6]

most of the aftermarket places are using stock heads and porting them. AFR and the new Patriot heads are new heads.

what if i wanted to take mine to a machine shop. would they know what to do, or would i have to give them the specs i wanted?

[sroach20]

id get them done somewhere that is familiar with ls1 stuff.

[Semperfiws6]

id get them done somewhere that is familiar with ls1 stuff.

yes i know, i just dont want to go in there and not be able to tell them exactly what i want, and let them dictate the specs of my heads.

[sroach20]

why not go with patriot, you can tell them what you want and hell sell you only what you need. and youll get a good price, plus youll get better flow than stock ported.

[Semperfiws6]

why not go with patriot, you can tell them what you want and hell sell you only what you need. and youll get a good price, plus youll get better flow than stock ported.

thanks man. i'll check them out.

[mrr23]

why not go with patriot, you can tell them what you want and hell sell you only what you need. and youll get a good price, plus youll get better flow than stock ported.

patriot sells ported stock heads.

to answer semperfiws6 question is you can try and go into a machine shop and tell them to port your heads to 224cc intake runners, 80cc exhaust runners and make your chambers 63cc. whether they can do that and have it flow correctly is up in the air.

[Semperfiws6]

patriot sells ported stock heads.

to answer semperfiws6 question is you can try and go into a machine shop and tell them to port your heads to 224cc intake runners, 80cc exhaust runners and make your chambers 63cc. whether they can do that and have it flow correctly is up in the air.

thanks mrr23. would they be able to tell me if it would flow correctly after ported, or would it be a shot in the dark?

[mrr23]

thanks mrr23. would they be able to tell me if it would flow correctly after ported, or would it be a shot in the dark?

if the place that ports the heads has a flowbench, then you can get the specs of it.

[bluefields88]

how much hp do the stage II Patriots give you over stock?