luckythirteen13

which one keeps the stock ratio and what are the new ratios of the other 2? are the stock heads pedestal or stud? can i use my stock rockers one all of them?

roundman

the pedestal heads would use the stock rockers although you could use other ratios as long as they are pedestal mounts. stock ratio is 1.59, you can get 1.60 and 1.72 from the aftermarket suppliers. the stud mounted rockers cost about the same as a set of pedestal mounted ones, so you can go with the studs for the same price as upgrading the rocker ratio if you want to go that route.
just make sure that if you change the stock cam you check to make sure that you will have sufficient piston to valve clearance with whatever cam lift and rocker ratio you go to. you might need to change the pistons for ones with deeper valve reliefs if you go to big on the total lift number.

luckythirteen13

http://www.jdsperformance.com/index....tem&inmake=all ok, that site just wont work for me. this page has it and works for me. if i want to use the stock rockers and want about the same compression or a little more-ish, which one would you choice? keeping in mind my mods.

this page says i dont need hardened push rods with the pedistal mount. what compression ratio would i get with the 60cc pedistal?

roundman

if you keep the stock rockers you must go with the pedestal mounted head, part number AFR 1472.
I didn't say you needed hardened pushrods with the pedestal mounts.
I think the stock heads are 61 CC, so you will get just a little increase over stock compression ratio. Since you still have the stock cam, I think you could not worry about the piston to valve clearance and go with a set of 1.72 rockers to get a bit more flow.

luckythirteen13

i know you didnt say anything about the hardened push rods, i was just pointing it out. anyways, thanks for your help, i know exactly what to order now.

roundman

What I said was the hardened push rods were required on the stud mounts just like the web you listed says.
You still might want to check some other prices at www.summittracing.com or www.jegs.com before you place your order although the price you show is cheaper than the one I mentioned.

luckythirteen13

ive searched summit and jegs by typing in afr 165 and nothing comes up on either site

roundman

you ought to go back and request a paper catalog from both of them as they have just about all the pieces parts you need to do most anything for any car.

luckythirteen13

i have catalogs from both and couldnt find the heads in there either

roundman

Oh well, I guess I can't be correct 100% of the time! LOL
Do you have one from Holcomb Motorsports?