kl92gt

ok i no ive talked about building a 331 stroker but it really not in my budget considering im only 17. so im thinking about taking my motor out having it bored .30 to a 306 using stock crank and rods but with some low compression pistions around 8.5 to 1 or 9 to 1. im going to have 185cc heads with a f303 cam and holley systemax intake. then either for graduation in may or when im parents sell there house there goin to buy my a power adder im thinking about a procharger running 10 to 12 lbs. this is my daily driver do you think it will hold up? im not really hard on my cars unless i need to be. ive seen in mmff guys with pretty much the same setup i was just wondering what you guys thought

kl92gt

i ment 306 question i was in a hurry

stanglx2002

you will be pushing the block to its limits thats for sure since the stock block says it can hold 500 HP

also why are you running 30 lb injectors on your combo you have now

kl92gt

thanks do u have any suggestions on pistons like which brand say dss, je what do you think? also do you think i should upgrade anything else? i doing fuel pump, arp bolt everywhere, new bearings should i do anything else

kl92gt

i got the 30s because i was planning on have my afr 185cc but things didnt work out so i just put them in anyway seems to be running good with them in mayb a little rich but runs good and plus my plugs are white

JD1969

If the block is good and the bores are round don't bother with the .30 overbore, it won't give you any real power. Now if the bores are not square, then by all means bore them out but only go as big as you need to clean them up.

kl92gt

yea thanks do you have any input on things i should replace while the engines out

JD1969

I would have the block magnafluxed and cleaned and the bores checked (if they are bad fix them). New cam,main,rod bearings. I would invest in forged rods and a crank, forged pistons and good file fit rings.

angcobra

I am building a similar engine now. If you think you will run 12# of boost you should go with forged pistons and rods. You will also need to add a girdle to the mains. The decision to SC makes a large difference in choices, (ie ring end gap, 0.016 for NA, 0.025 for SC application).
Minimum for any build is rod/cam/main bearings, oil pump, rings, gaskets. I also always work the heads when I build.

vfast

if this engine is working good for you now..leave it alone...instead buy a 302 or 351w block and start you build as your money permits while enjoying the car....any bolts can to put on the new engine