Ford IMCA Modified Engine Build: Top End and Completion

[@dannydirttrack3389]

Hey brother, love what you’ve been putting out.Looking for sponsorship opportunities. Please let me know if interested.

[@justinbrunner7127]

I had those style felpro intake gaskets leak on our sport mod twice.... I now use only the gaskets with the steel shim inside. if you have that intake off again, you may get the steel shim style gaskets.... should be the same part number with an S on the end

[@keithevans1731]

bullet cams specked out those same valve springs for me, but the thing is we have a cam.lift rule. the open pressure on those springs are 325 but thats at .550 lift , we have to run a .425 so the open pressure for me at max lift was only 265! valve float at about 6200! just discussed this with another wmployee from bullet and he is the one that figured out what was going on . so guess what??? you guessed it, had to buy another set of springs. waiting for them to come in so we can see of they help. when folks have less knowledge about the parts that they are selling, just cost me more $$$$.

[@sotacal]

Would a sealed IMCA motor before cost effective?

[@Triefenbachracing]

New 604’s are around $10k. Used up motors you can find for $5k.

[@chestrockwell8328]

I'm having my share of frustration with machine shops as well. Also I have a nice new SBF flat tappet cam and solid lifters that would likely suit your type of application well for sell. What sort of RPM range do you operate in with your racing? I do Road course stuff.

[@Triefenbachracing]

Around 7000 but as much as 7800

[@chestrockwell8328]

@@Triefenbachracing Nice, and you have good reliability with the stock sbf blocks?

[@Triefenbachracing]

@@chestrockwell8328 that’s what I’m fixin to find out lol. A main cap girdle that I installed it to keep the caps from walking, not to keep the block together. Because I’m running NA and no boost or anything it should be fine and I’ve read others having no issues with it.

[@chestrockwell8328]

@@Triefenbachracing Cool, we are on the same path then. I'm also using a girdle, though some say its a total waste while others say there is a benefit. My engine build is slightly different with aluminum heads, forged crank, rods, pistons all zero/neutral balanced but otherwise very much the same as yours. No boost, no high shock load drag racing launches, moderate horse power, properly tuned...I don't see why your or mine shouldn't last...we will see. Good luck at your race.

[@travissizemore116]

The cam retainer bolt washer is intended to cover the dowel, to keep the dowel from backing out during harmonics. It will back out. The fix is to just grind the face of the dowel down flush with the fuel pump eccentric.