Still gathering parts for my budget '05 LQ4 build. Cam thats going in is rather small, 216/226 .527/536 112+4. Next winter, Im gonna stab in a larger cam but for now, its not in the budget.

I know the factory LQ4 is 9.4-1 compression with the large chamber 317s and a 0.054" gasket. I never new Patriot sold new stock assembled 243 heads so cheap.

My plan is to run a .040" head gasket if I were to swap heads. Would the solid point in compression be worth it? I know the heads flow very similar (243 vs 317) but would there be a large benefit from the increased compression?

I'd mill the heads but I do not want to run into PTV clearance issues when I step up cam size.

And yes, the cam is small but it was a great price and will do for now.

Thanks guys
Nick

 

y not go with a stage 2 or stage 3?

 

Mainly the money. That'll end up costing me another $600 ontop of the cost of new stock 243s.

Mayby someday...

 

well whats your budget? maybe we can help you out with something better if we know how much you can spend

 

i would leave the heads alone. i assume you're using an ls1/6 intake? if you haven't bought an intake yet, i'd look at the vic jr/super vic setups. an L92 head is a possibility, as well...using the L92 carbed intake, as it is the only single plane i know of avail for L92. the lq4 pistons have a -6.5cc dish, which should allow for quite a bit of ptv on most any setup assuming you're not trying to use a 53cc head or something.

 

Nice "Rack" and Pinion Disturbed bird......

 

im having my heads milled right now for an entire point also it will be around a 20hp gain but will make my cam more lively down low. compression helps out with more duration, which is what it sounds like ur going to. id do it, wait i already did lol. id tell u the dyno dif but dont have them on yet