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**bigmac73** · 10-02-2021, 07:55 PM

What are the details on the 421 your building?! I've been kicking around that idea myself as well![/QUOTE]

I bought a deluxe short-block from Nyes Racing in Muncie,In comes with a Dart SHP block, Eagle rotating assembly, SRP Pistons 10.5:1 , comp cam 237/246 520/530 lift with 113 LSA .
and I am waiting on a set of heads from Eric Weingartner out of oklahoma. His 195 profilers ported out to 213 CC .

I wanted to go down on the duration slightly around 233/241 and have a 112LSA but Pat McCreery said his cam grinder can not get roller cores. Normally they have Erson custom grinds. So he finally found me a on the shelf comp piece

10-02-2021, 07:55 PM	#4
bigmac73 Senior Member Join Date: Mar 2012 Location: Chesapeake, Va Posts: 1,275	Re: aftermarket tranny x member opinions What are the details on the 421 your building?! I've been kicking around that idea myself as well![/QUOTE] I bought a deluxe short-block from Nyes Racing in Muncie,In comes with a Dart SHP block, Eagle rotating assembly, SRP Pistons 10.5:1 , comp cam 237/246 520/530 lift with 113 LSA . and I am waiting on a set of heads from Eric Weingartner out of oklahoma. His 195 profilers ported out to 213 CC . I wanted to go down on the duration slightly around 233/241 and have a 112LSA but Pat McCreery said his cam grinder can not get roller cores. Normally they have Erson custom grinds. So he finally found me a on the shelf comp piece __________________ Mike 72 C-10 Cheyenne off frame resto and Upgraded to 4 wheel disk, Tilt, Dakota Digital Dash / Rear slider. 421 SBC / TH350 3000RPM Stall Progression Ignition /Holley 750 DP/3:73 gear Eaton Limited Slip unit / 2 1/2 exhaust glasspacks Last edited by bigmac73; 10-02-2021 at 07:56 PM. Reason: my grammer sucks