ERL 427 F1A combo guesstimation
Thread Starter
Teching In
Joined: Jul 2011
Posts: 14
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From: Omaha NE
ERL 427 F1A combo guesstimation Curious as to what the members with experience think about what kind of power I will be pulling out of my winter build;
Pulling the Stock LS3 out of my 2012 Camaro in its place I am putting in a 9.5:1 compression ERL M5 Superdeck 6 427, 224/244 118+4 cam, PRC 255 heads with .675 springs. FAST 102 intake, NW 102 TB, Fast Fuel rails with ID 1700s, Squash dual 450lph on a hobbs E-85 / flex fuel conversion. Procharger F1A with a 12 rib 3.55 pulley.
With the LS3 I was making 560 rwhp and similar torque on a 150 shot, PRC 255 heads, and TSP 231/236 cam. Really hoping for over 800rwhp / 750 rwtq on the ERL F1A setup on a stingy Mustang dyno... Hoping I am not setting myself up for disappointment (not enough blower)
Pulling the Stock LS3 out of my 2012 Camaro in its place I am putting in a 9.5:1 compression ERL M5 Superdeck 6 427, 224/244 118+4 cam, PRC 255 heads with .675 springs. FAST 102 intake, NW 102 TB, Fast Fuel rails with ID 1700s, Squash dual 450lph on a hobbs E-85 / flex fuel conversion. Procharger F1A with a 12 rib 3.55 pulley.
With the LS3 I was making 560 rwhp and similar torque on a 150 shot, PRC 255 heads, and TSP 231/236 cam. Really hoping for over 800rwhp / 750 rwtq on the ERL F1A setup on a stingy Mustang dyno... Hoping I am not setting myself up for disappointment (not enough blower)
Blower is a little small for that combo and compression could be bumped some especially with you using E85. I see no reason it should make 800 even on a mustang dyno. I would ditch the Fast and NW though. Not good combos on a boosted setup. What size balance do you have and what rpm are you gonna shift at?
This is my setup on a stock bottom end LS3
https://ls1tech.com/forums/forced-in...-back-e85.html
This is my setup on a stock bottom end LS3
https://ls1tech.com/forums/forced-in...-back-e85.html
Thread Starter
Teching In
Joined: Jul 2011
Posts: 14
Likes: 0
From: Omaha NE
That compression ratio may be slightly off, as that was based on 70cc chambers my heads were milled down to 65cc and might be able to get by with a thinner gasket to bump the compression slightly. 7.48 is what I think the ATI balancer is, planning on shifting at 6800. Keep hearing that about the fast, haven't heard anything bad about the NW before though.
I don't think the NW TB will be an issue. Something like a Holley high-ram would be pretty nice on this setup. I don't think you'll have an issue hitting 800 rwhp. It sounds like your fuel setup is equipped to handle it.
Thread Starter
Teching In
Joined: Jul 2011
Posts: 14
Likes: 0
From: Omaha NE
I haven't ordered the pulley / 12 rib kit yet, Looks like the 3.7 will put me just barely over the 74000 limit, with the calculator I am using its looking like 12lbs of boost estimated. Sounds a bit low for the goal but it is just a measure of restriction. Only running 1 3/4 headers into full 3inch exhaust, cam has zero overlap so we shall see how efficient she runs. Will probably be upgrading the head unit once the new motor is nice and broke in after the tranny is gone through and the rear end / axles get sured up...
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