Ported L92 Heads #'s?
Ported L92 Heads #'s?
Thread Starter
Registered User
Joined: Nov 2003
Posts: 1,770
From: Mishawaka, IN
I wasn't planning on using them on an LS1, I just thought they would be a good bargain for a budget LS2 4xx buildup. So far I've seen several vendors offer ported versions, but they haven't been offering up any #'s on them. I would imagine the large volume runners would be acceptable on that.
Registered User
Joined: Feb 2004
Posts: 948
From: Stroudsburg, PA
Originally Posted by Jason 98 TA
Guys here's the dyno sheet from the 418 l92 stroker complete with l92 heads & l76 intake!
This is the engine that made 640 flywheel horsepower a week or two ago. I'll try to post up the dyno figures for the engine dyno later today.
Here's the specs on the motor & car:
TSP 418cid L92 Stroker
4.080" Bore
4" Stroker
Precision Race Components 6.2l Heads
PRC Platinum Spring Kit
Texas Speed 251/259 Camshaft 110+3
ASP Underdrive Pulley
Stock 6.2l Intake w/ stock 6.2l injectors
1 3/4" Headers
Borla Catback
3.90 Gear 12 Bolt
The engine dyno tests were done with 1 7/8" headers. Unfortunately the customers car is running 1 3/4" headers, but the car still makes very good power. If memory serves me correctly the engine is just a little bit over 11:1. We dyno tested several different camshaft options on the dyno, but decided to leave this one in to see how she drives
Chassis Dyno Results:
This is the engine that made 640 flywheel horsepower a week or two ago. I'll try to post up the dyno figures for the engine dyno later today.
Here's the specs on the motor & car:
TSP 418cid L92 Stroker
4.080" Bore
4" Stroker
Precision Race Components 6.2l Heads
PRC Platinum Spring Kit
Texas Speed 251/259 Camshaft 110+3
ASP Underdrive Pulley
Stock 6.2l Intake w/ stock 6.2l injectors
1 3/4" Headers
Borla Catback
3.90 Gear 12 Bolt
The engine dyno tests were done with 1 7/8" headers. Unfortunately the customers car is running 1 3/4" headers, but the car still makes very good power. If memory serves me correctly the engine is just a little bit over 11:1. We dyno tested several different camshaft options on the dyno, but decided to leave this one in to see how she drives
Chassis Dyno Results:
Last edited by Zigroid; Mar 23, 2007 at 10:23 AM.
Registered User
Joined: May 2006
Posts: 6
From: Fayetteville, NC
lookie here
those huge runners dont seem to have a problem producing kick *** low end torque, provided you don't have a huge *** cam like the above. this is the first build ive seen that can actually rev, though. Id rather go with the 242/250 cam they tested previously that made 630 on the engine dyno (gave up 10 hp) but made a ton more torque down low.
those huge runners dont seem to have a problem producing kick *** low end torque, provided you don't have a huge *** cam like the above. this is the first build ive seen that can actually rev, though. Id rather go with the 242/250 cam they tested previously that made 630 on the engine dyno (gave up 10 hp) but made a ton more torque down low.
Retired
Joined: Oct 1999
Posts: 3,166
From: Inside Uranus
I've seen 480-530 rwhp 90% of the time. It all depends on the combo. These heads like big cams as shown in the above dyno graph.
Retired
Joined: Oct 1999
Posts: 3,166
From: Inside Uranus
Thread Starter
Registered User
Joined: Nov 2003
Posts: 1,770
From: Mishawaka, IN
Looks like they're still trying to figure out what the best budget combination is.
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