Quote:
Originally Posted by Matman
Hello all I知 new to the forum I知 building a 10-1 406 with butler prepared Edelbrock unported d port heads with a 72cc chamber short block will have forged rods and dss forged pistons edelbrock dual plain intake going in a 65 gto stick car I知 having a difficult time deciding on a cam shaft definitely going roller had originally been thinking about the xr276hr till I致e seen posts on here about them being a pooch. Butler recommended their similar custom grind with a 112 Ls angle I知 looking for something that痴 lopy at idle I知 just wondering if anyone has used this cam in a 400 and if it has a tame idle or no or can someone recommend me another grind that will fit my preference thanks.
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I used the Comp XE276HR in a 350 block bored .060 over with Butler's 4.25" stroker kit with Ross flat top pistons. 1.5 Ratio rockers. Calculated CR 9.3
6X-4 heads, Torker I intake, Buick GS455 Stage-II Quadrajet, MSD billet distributer at 34 degrees total advance, Hedman headers.
442 Lb Ft@4300 and 453 Hp@5600
Idle:
https://www.youtube.com/watch?v=nxDtH_76piU
Best dyno pull after adjustments:
https://www.youtube.com/watch?v=cfso2r9udv8
Still needs some on the road tweaking for better spillover to secondaries.