holy crap i just got the price on my gmpp block and its gonna be like 2,900
anyone know if the stock block is good for high boost levels, i hate to spend that kinda money on a blockl specially when i could get a worl alum sbc block for 200 more

 

So far I've heard of people using the stock block on power levels as high as almost 400 HP, and over 400 Ft/lbs.

 

its not so much as p[ower level im worried about, my build is leaning twards more of a drag setup,and im worried about the high boost levels i know tigo ha smade over 400 hp on a stock block but that was at liek 12 psi im looking to run more around 20
btw i didnt get that xs power turbo spent the money on a factory garret

 

I think tiago has pushed the highest level of boost that you would beable to contact. I think he was up in the double digits on boost.

 

think of it like this:

aluminum block, aluminum heads, 3X00 intake & DIS w/programable obd 2 (if available) + forced induction.

how fast do you want to go, plus you'll have that much weight reduction allready w/"just a little six"

of course I'm talking your $$$ here

 

Well I don't know how to answer your question then.....

Yes?

 

i quess ima have to get it together and see what happens,ive decided to go for low et with this car, which as of right now is hangin in the low 12 sec range with a 60* v6 though that record as ive been told is held by a 3.1

 

hmm, i doubt thats the record . . . i know 89jyturbo is in the 12s with his RMT cavalier(fwd+rmt = 12s = lol), with suspension im sure you could hit 11s no problem on a real turbo hybrid, and i wouldnt be surprised if someone else has too by now.

 

sorry shoudl have specified low et for f-body which nnone has gone into the 11's yet

 

what i meant was with that high of a boost level i was wondering if the stock block(2 bolt mains) would hold up or am i just gonna put the crank threw the pan,or blow out a cyl wall. know how thick a prpoduction blocks cyl wall is off hand?

 

have the bottom end of the block looked at, use some ARP STUDS to help main cap walk, tiago knocked out 340rwhp/400rwtq with the stock bottom end, and he siad it hasnt complained yet, some good machine work, good bearings, and good hardware on a stock block should do it

 

add some block filler if you're really worried about block integrity. Don't fill the entire block, though if you're going to be doing more than racing though.

also see about ceramic couting the valve faces, head combustion chambers & piston crowns.

 

this engine has 7 main caps for 6 cylinders, the v8s have 5 caps for 8 cylinders. im pretty sure its not gonna be a problem at 400hp. in a 400hp v8 each main cap has to hold ~100 hp(not completely correct, but effective). in a 660 each main cap only has to hold 66.7 hp. the mains may or may not be as strong, but there is a synergetic effect because the crankshaft is all one piece, so since each piston isnt firing at the same time the other ones can help distribute some of the load(not a ton, but it helps). so 6*100/7 is probably about as good or better than 8*50/5. and you dont need a 4-bolt 350 at 430 hp. oh and remember that because of the counterweighted (and longer = heavier) crankshaft in the v8 there is more rotating mass putting stress on the mains. youre fine with this block.

 

dont forget its not all about pure power. Making it stick, launching it right, wind drag effiency, light weight, rotating mass.


20psi of boost

 

How do you find Tiago? He doesn't show up on the user list and I want to check out his car again.

 

google up force fed fabricators. they're in TX

 

When's the last time you had a 660 apart? The 660 (ANY generation) only has 4 main caps.

 

I still can't find him!

Yeah, 4 mains.....

 

d'oh, my bad. i was thinking of an I6 motor . . . ive never had a 60* apart.

 

force-fed-fabrications

 

my bad, gave wrong name,

Force Fed Fabrications

BAD BIRD

 

tiago camaro has a mean lope i wonder what size cam hes using with that turbo?

 

thnx guys