LS 7 HEADS FROM AMERICAN HERITAGE PERFORMANCE

At 1,800 miles on my new LS7 570 HP crate motor, I tore it apart and sent the heads to AHP to have them install their Moldstar 90 guides, going with new Titanium intake valves, Inconel ex valves, BTR 685 springs with Ti retainers, Mill the surface .030 .040 head gasket, to raise the compression to roughly 12-1 (we live at 5,000 feet ele)and their priority CNC porting. also the timing chain was stretched out and went with comp cam double roller, driving a Brien Tooley Racing stage 4 version 2 camshaft, their dyno shows 700 HP! and 4 corner steam kit.

[@BretMech]

O ya! iv seen your Vette vid, that thing is wicked!

[@hangfire6368]

That will be a spicy cam. What trans and rear gear are you running? I can't wait to hear it run. Do a lot of people run the double roller vs an upgraded single?
I have a '73 C3, 427 SBC 242/248 @ .050, .585. Dart block, AFR 220, Holley EFI, 1206 miniram, TKO. Side pipes. minilite style wheels.
I'm collecting parts for a LS7 build for a 66 Nova drag N drive car. I bought a smaller Cam Motion camshaft. Duration at .050 - 228/244
Lift with 1.8 - .648/.639, Lobe separation 115, Intake center line 112 (pretty close to the cam in the 570 hp LS7 crate engine I think). I went with a t56 magnum 2.66 first. .63 sixth. Moser 9", 3.73, spool. Split mono leafs with caltracks, sliders. Smith Racecraft front end should ship in June. I have the MSD intake, I have the Z28 factory exhaust manifolds that I want to try first. I'm trying to keep the car looking stock on the outside.

[@BretMech]

Hey, that sounds like a fast ride! Iv got 373s and a Chance converter 3000 stall Infront of a 4L65E that I built, its on my channel, spent 6K in parts alone to include the Sonax 6 pinion gear change planet, should handle 1000 to 1200 HP, and super lightweight.

[@BretMech]

The results are in, this is after adjusting Tq Managment and injector end angle custom map on the Terminator X ruclips.net/user/shortsQ8cEY4zBlqo