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400 hp out of a 5.8

3.1K views 25 replies 13 participants last post by  MRBiggs  
#1 ·
what would you guys recommend to achieve this?
 
#7 ·
i would definately put some good heads on the motor like afr185s or trick flow twisted wedge heads. i have the twisted wedge heads on my motor and like them. i would also get a good cam in the 230-240 duration with about 600" lift on it, get an edelbrock victor efi intake, 75mm throttle body, 80mm mass air, 30lb injectors. with that as long as its not a low compression motor it should be about 400 to the wheels with the right parts.
 
#9 ·
Solid roller cam and a good head,twisted wedge 205,afr 205-225
225 high port.I made 420 at the wheels with ootb R heads,10.5:1 comp,and a mild solid roller.With a AOD in it I can drive anywhere.Even drove on the hot rod power tour for 450 mile round trip in 100 degree heat.The car has gone 9.50 with nitrous driven to and from the track
 
#12 ·
decent heads (not TFSR heads you'll spend 800.00 on headers alone) I'd look into the victor jr knock off heads or any trickflow head(not r heads). An isky 280 cam if staying flat tappet(I don't know for a roller) The 351w responds well to a simple head and cam upgrade. My dyno said 480hp with the 280 cam and n351 heads.
 
#14 ·
Uh...Edelbrock has a "Total Performance Package" for the
351W that claims 400hp/412ft-lb of torque.

They have some disclaimers/additional mods to get to that power level (IIRC):

750cfm carb (or whatever is appropriate in an EFI intake)
9.5 to 1 compression
Headers and a 2-1/2" exhaust

I might take the claims with a grain of salt but it's not unreasonable and I wouldn't think Edelbrock would talk out of their butt.
 
#18 ·
this is my kind of thread. My bro and I are also building a 95 351 roller block.

our goal is 400 at the wheels N/A and pass "functional" emissions for ca (we figure we can pass it off visually for a 5.0...we've got a friend locally who does this)

having said that, we picked up an nos gt40 lightening lower, and will mate it to the obvious upper...along with smog legal afr 185 heads and some kind of custom cam likely...

sorry to rob the thread, I figured it was along the line...does this sound like a plausible 400 hp at the wheels setup?? would it be ok to use the stock 95 pistons/rods?
 
#20 ·
i've been watching your wtb ads locally. Looks like you, and my bro/and I are on the exact same page.

we've already got the 95 roller block...we've stripped it, and it's awaiting machine shop work and the rest of our research.

we should stay in contact...our #1 goal is to pass "functional" emissions. Having said that, the sky is the limit. My bro has a lot of terminator friends, so he's got his goal on a n/a terminator killer in a fox setup.

best of luck to your setup...keep me informed of your progress, and we'll do the same..Jeremy
 
#21 ·
I'm looking to build a reliable engine for street and open track use. I'm tossing a procharger on my 302 for now, just to satisfy the power bug. I don't know how long this engine is going to last though as it has arounf 150K on it. I want to start building a 351w stroker on the side. I just feel that an N/A engine is going to be more reliable, not to mention a little easier to work around.

I'm just looking for a bare or rebuildable 351w now. Then I start gathering parts slowly. Maybe in a year I'll have a complete engine.
 
#22 ·
wow 3 guys from So Cal all looking for the same thing... :cool:

I have a 95 351 block that I just got and I went to the machine shop to price the work it'll need. I'm not looking for a smoggable setup but I too want a 393 or 408 Terminator killer. :evil: 450+ rwhp is what I'd like.... I'll watch this thread too.
 
#23 ·
which machine shop did you go to??

I ran by dougan's the other day for an estimate. For a blueprinted block, it's a pretty penny...about $1100ish, with prices going up in a month or so... However they've got the repuation.

My bro (his buildup, my help) is kinda thinking just cleaning the block up now, and not blueprinting it....which way are you guys gonna go about it?
 
#25 ·
I'm not sure who I am going to have do the machine work, but I am going to have someone bore, hone, and surface the block and balance the rotating assembly. I am going to do all of the assembly myself. I'll probably send the heads out to TEA for porting since I am pretty much set on the TFS twisted wedge.
 
#24 ·
look up tireburner163...... he's at 400 or so with 357 cubes... as streetable as you'll get..