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Re: Small Block (380ci) turbo/blower 1200-1300hp
[Re: Diablo]
#2415744
12/09/17 03:04 PM
12/09/17 03:04 PM
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Joined: Jan 2005
Posts: 4,243 Charlotte, North Carolina
sgcuda
master
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master
Joined: Jan 2005
Posts: 4,243
Charlotte, North Carolina
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I've worked with guys with Gen3's twin turbo's. Stock blocks seem to hold to about 1,400 before cracking the lower end of the bores. Had some issues with the high dollar cometics not holding up over 25 psi boost. With .570 stock lift, wasn't a stretch to get the valve train trouble free. Caps didn't seem to be an issue. But I'd rather see a bigger bore and shorter stroke. Start with a 6.4 block or an aftermarket block, if allowed. Stay away from the 6.1 block. Not as strong as first thought. 5.7 block ended up being the stronger of the two. I've seen a bunch of sheetmetal intakes exploded from backfiring, so I would stay with cast. Eagle or Apache heads would get you there, I think Eagle the better of the two for strength and availability. Bunch of aftermarket heads and intakes are becoming available now. I've used MSD Hemi-6 stand alone ignition. Works well once you understand the graphs.
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Re: Small Block (380ci) turbo/blower 1200-1300hp
[Re: Diablo]
#2415747
12/09/17 03:24 PM
12/09/17 03:24 PM
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Joined: Oct 2007
Posts: 4,219 New York
polyspheric
master
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master
Joined: Oct 2007
Posts: 4,219
New York
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sheetmetal intakes exploded from backfiring
If the cast manifold withstands the shock, the pressure will hold the intake valves open.
Boffin Emeritus
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Re: Small Block (380ci) turbo/blower 1200-1300hp
[Re: Diablo]
#2415757
12/09/17 03:51 PM
12/09/17 03:51 PM
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Joined: Jan 2006
Posts: 1,400 Trumbauersville PA
ric3xrt
pro stock
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pro stock
Joined: Jan 2006
Posts: 1,400
Trumbauersville PA
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6.2 Helllcat short block, swap the rods out for Oliver or what ever you want as long as it's not stock rods . a good set of 5.7 Eagle heads.. . Ritter intake manifold, Inertia motor sports http://www.inertiamotorsports.com/ they have some great cams.
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Re: Small Block (380ci) turbo/blower 1200-1300hp
[Re: Diablo]
#2415771
12/09/17 04:21 PM
12/09/17 04:21 PM
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Joined: Jan 2006
Posts: 1,400 Trumbauersville PA
ric3xrt
pro stock
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pro stock
Joined: Jan 2006
Posts: 1,400
Trumbauersville PA
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earlier this year , I built a 380Ci 5.7 , Molnar crank# 345-3900JA6F it's a 3.9 stroke, Manley H Beam 6.2 in rods with a 2 in pin and 3.937 bore Diamond 53007(think that was the # Intake was bought from BDS, but the crankshop also has them http://www.blowerdriveservice.com/store/hemi-61-custom-intake-p-859.htmlComp cams 273 he runs a671 on top, I have no idea what kind of HP it makes but the combo is easy to reproduce
Last edited by ric3xrt; 12/09/17 04:22 PM.
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