Has anybody done this to fit for 4.030bore,does anybody have any pics or know how on this??

 

Dude, your gonna have to start all over again with this new 408 of yours. Sell everything you got. You need a 248 cam like I said You need a new 85 lid and MAF. Get rid of your AFR 205's and just get the 225's. Your gonna need the 1 7/8 headers and let's not forget the all important 12 BOLT. I'm just jealous that your getting your 408 before I get my 402

 

Ha Ha,Ive seen 18, 525 rwhp 408s with 205afrs so dont tell it wont work cause it will I dont want max effort 408 just street torque monster,believe me it will work just still undecided with cam.Ill worry about the old behind when it breaks,headers are fine as im looking for torque,ls1 naturally have hp.A big bore sucking on high velocity heads,on a big reserve plenum"ie fast90"=gobs of usable torque as its what makes u fast, if it doesnt work afr 225 or etp will get a call,dont forget tnt and direct port IM SETTING UP SHOULD BE FUN

 

I'm running AFR 205s that've been opened up to a 4.030 bore. They worked out great. No pics, but someone that does headwork will know what you need. The fella I had do my work just used the head gaskets to 'trace' how much material needed to be removed.

 

Cheater, TNT, your gonna need it when I get my N/A 402