1BIGMOFO

185's are better right? Im building a 347 engine. This is getting to be very frustrating. Im not a pro with all this head/cam piston stuff. Any help would be appreciated! thanks

90mustang5.8

all i know it the 165's are suppossed to be better with a 302, and thatthe 185's are better with the 351w

bouchermb

Go with 185's. I went with Canfield 195's and mine is getting done rigth now. Jay Allen recommended the Canfields, but I've heard from a guy who does flow testing for companies, that AFR's flow the best.

1BIGMOFO

Thanks guys. Now I need to decide on a cam, I have an auto 94 gt... any suggestions?

1BIGMOFO

also I need to decide on roller rockers? What will the afr's come with? I am ordering them with the "upgraded springs" for $175 more.. Will I need to get roller rockers? Will they be ready to bolt on when they come in?

bouchermb

I'm not doing the bottom end/long block, but think I have 1.6 RR's. You'll have to buy the RR's, and unless I'm completely brain cramping, they don't automatically come with them. I bought Scorpions, which are supposed to be great. Get a custom grind cam and as you hear on here all the time, do it right and do it once.

I'll try to post some pictures I took today of the engine I'm getting built.

They aren't anything special, but are kind of cool.

1BIGMOFO

whats a custom cam run?

gspfunk

I don't think the AFR's will come w/ RR's, but you can get Scorpions for ~$188 or so and they're good rockers. Getting the upgraded valve springs is well worth the $ w/ AFR's. Ask Grabbem88...the standard springs tend to float. IIRC, you'll need stud mount rockers; 1.6's would be your best bet, depending on your cam choice and the manufacturer's recommendation.

1BIGMOFO

so if I have a custom cam made I would order the heads / rr's and hardned pushrods 1st them call ci to have his make a cam to work with all that?

Where can I get scorpion 1.6 rr's for $188?

OnyxCobra

I'd get 185s for the 347. If you get Pedestal mount rocker heads the spring upgrade is only $60, the stud mount rocker heads are more b/c they upgrade more stuff. For a cam, maybe something along the lines of the trickflow stage 2 cam, not totally sure on that though b/c i dont know much about 347s...