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#1034795 - 02/02/16 12:34 AM I have a 350 crate i want to make atleast 400hp  
Joined: Jan 2016
Posts: 30
ray6914 Offline
Junior Member
ray6914  Offline
Junior Member

Joined: Jan 2016
Posts: 30
pittsburgh pa
84 Monte Carlo SS 3 speed transmission automatic it has a 10 bolt posi with 342 gears has 8.5:1 compression stock 4.00" Bore, 3.47" stroke recommend on cam and Intake Manifold and cfm Carburetor and cc Cylinder Head and stall converter its a street driven i have a cam 295/313 Advertised Duration, 243/257 Duration @ .050 inch, .500 inch/.486 inch Lift

#1034812 - 02/02/16 05:18 AM Re: I have a 350 crate i want to make atleast 400hp [Re: ray6914]  
Joined: May 2007
Posts: 4,934
Buick Runner Offline
10+ Year
Buick Runner  Offline
10+ Year
Member

Joined: May 2007
Posts: 4,934
Dharma station 1 the Hydra
That low compression ratio is going to hold you back from making 400 HP, you need at least a whole point higher than that. Best way to make 400 HP fairly cheap is buy a used running L31 SBC, throw a decent performance cam in it along with a new timing chain and oil pump. GM sells a Qjet intake manifold with EGR port for Vortec heads. Only tricky thing is installing a in tank fuel pump as L31s do not have provisions for a mechanical pump. Factory Qjet is quite capable of 400 HP while still being streetable.


SBC powered 1987 Regal with TES headers, ZZ4 intake, ZZ4 PROM chip, mini starter, THM2004R, 2500 stall converter, 2040 cam, CCC system, and 3.73 posi rear.

2008 ex NPS P71 Crown Victoria, cop motor, cop shocks, cop brakes, and Jmod.

Never argue with an idiot.
They will just drag you down to their level and beat you with experience.

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