I'm about to start looking into a lq4/9 stroked to 427 for boost. I'm looking at a f1a or 88mm turbo at about 14-20lbs whichever can get me to 850whp easiest. I want to be able to do this on pump gas so i know i need the lower CR. Help me make the right choices here. Opinions welcomed!

Texas speed 427 rotating assembly:
Eagle 4" crank
Eagle H beam 6.125 rods with ARP 2000 rod bolts (are 8740's better?)
Wiseco 4.125" -23cc dish pistons
Wiseco steel top 2nd ring
Clevite H chamfered main and rod bearings

Parts needed:
317's unported. (i know people make good power with these but do i need a 70+cc head?)
(need help with valvetrain!!)
SLP double roller timing chain & oil pump
"9" rear
walbro twins
fast fuel rails/ 60 lb inj.
6L block

Parts on car:
tsp 1 7/8 LT's w/ true duals
fast 92/92 unported
built t-56
Moster stage 4 clutch
many suspension mods

well i kinda don't want to lose all of these parts which is whats swaying me more towards the procharger vs turbo. If i'm forgetting anything let me know.
Thanks!

 

also have a torquer v3 cam. i know that's not a boost friendly cam. Any suggestions on cams?

 

I've seen several pros say that they prefer the stock crank. The 70cc heads only help. They're the best flowing of all the stock heads. Go custom on the cam from a sponsor that does turbo setups.

 

Can you bore a 6.0 block to 4.125? What is the max you can bore one of these blocks?

 

I've heard you can take it to 454 without having to resleeve, but that's about as safe as taking the LT1 to 396

 

Try 4.060 and 454s are done on aftermarket blocks I believe.

 

Ok. I was wondering about that. 4.030 is the stroke for what on a 6.0 block? What about putting a STS kit up in the rear with a 88mm? Haven't really seen many cars past 76mm on the rear mounts

 

4.030 make for a safe cyl wall, i will not even build a motor past that on a 6.0 block without a signed release form to show that i do not reccommend it. To be safe ESPECILLY with boost use an lsx block. you can use the ls7 but being aluminum i would put a gurdle brace on it to keep it alive.

 

4.03 is the bore. No more than a 4.1 on stroke IIRC