Here is a Basic TA Catolog bulid . We dynoed this Engine last Monday , better than expected . This is really a BOLT-Together 500 HP Plus Horsepower , plain & simple build . All machine work & balance no tricks .003 mains & .0025-0027 rods 15/40 rotella with zinc additive . 75 psi 40 hot idle . Ta stock style pan 6 quart with Mike P /AMP low restiction screen 5/8 stock tube & 1258 wix filter 1970 455 block drilled to 5/8 basic oil mods cleanup Buick rebuilt Timing cover & Stock Gears w/wear plate added balance line -6 to rear oil galley . 455 .038 over bore Wiesco Tru-pro dish/notched pistons , hasting standard tention cast rings Buick connecting rods ARP bolts . Rollmaster chain /cam degreed +4 advanced to 107cl 238/248 112ls . 508 lift with TA 1.60 rockers TA Gm delphi lifters 5/16 pushrods Ta grooved & coated bearings 10.530 deck Height & Piston Zero @ deck felpro 1125 .041 Gasket 10,5 cc Compression 11.18-1 Ta SE heads 3/8 Valve 2.130 in/ 1.755 ex NO Port work 60cc measured Ta SP-1 intake for Qjet 1 inch HVH super sucker 4150 830 Holley MSD Distributor 34 degrees toatal timing 92 octane WAWA GAS 533 HP @ 5700 563 TQ @ 4400
Nice solid street piece! It's incidentally within 1 hp and 4 lb/ft of my engine. I've got some port work done and slightly more cam but less compression. He ought to be really happy with that setup, makes for a fun but not too radical to be a pain street car!
Nice combo but over 11-1 on pump gas with 34 deg scares me.....esp in hot weather. Cruising is one thing but really getting into it is another....
Shift that thing at 5500 and it will last a L-O-N-G time!! Very nice build! So which cam is that, TA 290-08H?
And those engines have knock sensors and computer controlled timing to adjust for those situations. The accepted bump in comp for alum heads is .8 Bruce is right to express concern for that engine under the right conditions, it probably will be ok, it has quite a bit of camshaft for that power level, which helps it blow off part throttle/mid rpm cylinder pressure. That part throttle high load knock is what really kills them, more so than the High rpm stuff.. and those cam specs should help prevent or lessen that. Customer is going to have to be very sensitive to spark knock, or mix fuel.. but he may already know that.. JW
Jim he is aware of that . It will never be run this hard . Timing will also be turned down in the car . 100 octane is the option for gas as well . I realize that . We also ran it at 30 & 32 seemed to like 34
Good to hear Nick, I figured you had it covered... ya, it's rare when I find a BBB that does not like 34*.. JW
I agree with aluminum heads 34....but iron IMO like 30-32 max to avoid detonation at full throttle. With aluminum 38 with 4 degrees of retard after 5000rpm is what I ran to get a 1.31 60 foot and good mph. But for day in day out racing I use 34 retarding to 30. Kills .04 in 60 ft but easy on motor.
Another thing to remember is that dyno controlled conditions where water temp is 155 deg or less, you can get away with more timing. A hot day on the road after running in traffic it will usually be 30+ deg warmer.
Bruce thats why I wont be tuning this to 34 . This most likley it will get a Holley EFI installed , timing dialed back with mixed Sunoco 100
