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Hey Guys, I haven't posted any engine builds in a while. I'm doing a 427 sbc (4.125x4.00} for a local guy. It actually going in a car hauler truck. So its not a max effort build. Its kind of a hot rod truck. It has to have low end pulling power, but he still wants as much top end power as we can. So I'm using Dart SHP block, JE pistons, Callies rods, a Manley crank. I'm using AFR 210 comp port heads that flow over 320cfm. I had to be careful on cam selection. I wanted something small enough to make low end torque, but big enough to try to still make some top end power. I ended up using a Crane 222/230 .543/.579 on a 112 lsa. Thats with a 1.6 rocker. It's not alot of cam for a 427. Its also carbureted, so I'm using a Edelbrock performer rpm air gap. A good dual plane will also help with torque. I had Strasburg machine do the machine work. They are one of the top machine shop anywhere. They internal balanced it to .5 of a gram. I think it should run good. I degreed the cam. It was .5 a degree advanced, so it was about perfect I use a small journal rod because rod to block clearance and rod to cam clearance is so tight. You can see how much clearancing it took to make it clear a 4.00 stroke
Last edited by tpi 421 vette; Jan 1, 2021 at 06:56 PM.
I was measuring pushrod length. Stock length is 7.20. Because the cam is ground on a .950 basecircle and the AFR 210 has a taller port, it needs a 7.60 pushrod length. The AFR 210 casting is the same casting as the AFR 220 head
Last edited by tpi 421 vette; Dec 31, 2020 at 05:10 PM.
I was measuring pushrod length and it needs a 7.60 pushrod. Stock length is 7.20. Because the cam is ground on a .950 basecircle and the AFR 210 has a taller port, it needs the 7.60 pushrods. The AFR 210 casting is the same casting as the AFR 220 head
its a hydraulic roller. I used the tie bar lifters because with a .950 base circle the stock lifter directional plates dont grab enough of the lifter. I could have used a tall body lifter Crane makes, but they are well over $700. These will work fine
I would love to have a motor like that, but with all the premium pieces, I'll bet it is pretty pricey.
It doesn't have alot of cam in it, and top end hp isn't the goal here. But I would hope it would make around 500hp. I would think the torque would be around 570 ft/lbs which is probably more important in this build. This build with bigger heads and more cam could easily get over 600hp, if it was for a different vehicle
It doesn't have alot of cam in it, and top end hp isn't the goal here. But I would hope it would make around 500hp. I would think the torque would be around 570 ft/lbs which is probably more important in this build. This build with bigger heads and more cam could easily get over 600hp, if it was for a different vehicle
That sounds like an incredible street motor. It should be great for pulling at a broad range of rpm.
That is the type of motors (big inch moderate cams) I built a long time ago for a lot of my cars and they were a lot of fun. They would pull in any gear and easy to drive or launch (quickly). I just wish I could have afforded all the good parts like you are using. Although you are building for a truck, that type of motor in a lighter car with a manual transmission is an interesting combo.
427 SBC engine build
