Small block 426 stroker with trickflow heads. How much HP.

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  1. mopar65

    mopar65 Well-Known Member

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    Well I am thinking about building a 426 stroker engine with my spare 360 magnum block. I have been looking at the kit that Huges engine sells. The engine will have 13.1 compression and not sure what size yet. But would like to put in a solid roller. Will be useing my trickflow heads and my ported indy single plane intake. Carburator for now is a holley HP 800 DP. Until I can get the money to get a set of headers built, I will be useing my hooker 1-5/8. Transmission is a 904 with a 8 inch 5500 stall coan converter. 4.30 gears. The engine will be going in my 3400 pound 96 dakota sport race truck. My goal is to beable to run low tens or high 9 if I am lucky. So do you think the 426 will make enough power or am I just nuts and not waist my time? Lol
     
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    • fishmens67

      fishmens67 Well-Known Member

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      I'd be thinking 600 + HP is within easy reach. certainly high 500
       
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      • Heywodja

        Heywodja The Heartbeat Stops Here FABO Gold Member

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        I think Mike @ b3 racing engines built one that went like 621 a couple of months back..
         
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        • mopar65

          mopar65 Well-Known Member

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          Cool. Do you remember any of what all went into the build? I was hoping for around 650Hp. I was going to build a 5.7 stroked to a 6.4 gen 3 hemi. So far I have a set of heads and a set of 13.1 compression pistons. But I have learned gen 3 hemi stuff is lots of $$$$$ lol
           
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          • Heywodja

            Heywodja The Heartbeat Stops Here FABO Gold Member

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            Give Mike @B3RE a call... 717-497-6572, he will know for sure..
             
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            • fishmens67

              fishmens67 Well-Known Member

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              650 HP will be a stretch for OOTB Trickflows
               
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              • famous bob

                famous bob mopar misfit

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                Heck , the stuff required to make one run is lots of $$$$ !
                 
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                • 1965fish

                  1965fish Well-Known Member

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                  I am building that combo right now.
                  I have a little less stall in my converter but have 4.56 gears.
                  It should be together next weekend and make some test runs at the end of the month or first week in April. My only issue/ holdback is my TTI 1 5/8 to 1 3/4 step headers. I don't want to cut the fender wells to get a bigger header so its what it is.
                   
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                  • PRH

                    PRH Well-Known Member

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                    What was required to get the Indy intake to work with the TF heads?
                     
                  • BVoelzke

                    BVoelzke Well-Known Member

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                    Easily high 500s to over 600.. my 408 R3 block, Indy 360-1 heads and intake with little work at only 9.8 to 1 compression made 539 hp 502 tq. with more compression , head work and a roller cam it would be an easy 9 second piece

                    ED07035B-D047-4BA8-B69A-A5C4AC383CB6.jpeg
                     
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                    • mopar65

                      mopar65 Well-Known Member

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                      Very true. Just seems like hemi stuff is twice the cost.lol
                       
                    • mopar65

                      mopar65 Well-Known Member

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                      Cool. I look forward to hearing how it runs
                       
                    • mopar65

                      mopar65 Well-Known Member

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                      Just had to get the intake redrilled for the LA bolt pattern. My intake was cast for magnum heads. I was running this intake on my 360 magnum with EQ heads before I switched to the trickflow heads.
                       
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                      • mopar65

                        mopar65 Well-Known Member

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                        20200926_135513.jpg
                         
                      • fishmens67

                        fishmens67 Well-Known Member

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                        Your going to need a head that flows in the 320 range @.600 and a cam in the 260@.050 range to get there.
                         
                      • mopar65

                        mopar65 Well-Known Member

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                        The cam i have in the 360 is a comp 550 lift solid that is 260 @ 0.50 but looks like the heads i have won't flow enough Air
                         
                      • fishmens67

                        fishmens67 Well-Known Member

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                        yea your a little choked at a point with that volume head and header size
                         
                      • mopar65

                        mopar65 Well-Known Member

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                        Thats what I figured
                         
                      • PRH

                        PRH Well-Known Member

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                        Are the port openings in the magnum version of the Indy intake pretty close to a normal Magnum size?

                        I haven’t had a regular Indy SB rectangle port manifold(360-3R) here in ages, but I recall those as having the W2 bolt spacing, along with ports that are wider than std LA heads.
                         
                      • mopar65

                        mopar65 Well-Known Member

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                        I really don't remember. I sent the intake out to have it ported. The EQ heads i had were ported.
                         
                      • PRH

                        PRH Well-Known Member

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                        Okay..... thanks
                         
                      • mopar65

                        mopar65 Well-Known Member

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                        Sorry if I couldn't answer your question. Here is a better pic of the intake on the engine give

                        20200702_130606.jpg

                        20200628_205235.jpg
                         
                      • 1965fish

                        1965fish Well-Known Member

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                        The 426 is in the Wagon and running.
                        Next task is getting it to the track for some testing.
                         
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                        • flyfish

                          flyfish C8H18+N2O = :-D

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                          The only thing keeping it from a low 10 would be the 1 5/8 small headers. If you put a 1 7/8 header on it, you would be there for sure.

                          For what its worth, my 408 with ported Edelbrocks (293@0.600), 264/268 @0.05 flat tappet cam, 13:1 compression, e85, and a slower/heavier 727 transmission is running 10.1 @ 3250lbs.
                           
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                          • 1965fish

                            1965fish Well-Known Member

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                            Yeah. I have a couple things holding it back a little.
                            Small headers, 3" exhaust and mufflers, no hood scoop and 3450 lbs with driver.
                             
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