LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

431rwhp/386rwtq - TEA LT1 heads/custom cam

Old Nov 20, 2006 | 12:02 PM
  #1  
Jason99T/A's Avatar
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From: Baton Rouge, La
431rwhp/386rwtq - TEA LT1 heads/custom cam

We just finished my girlfriend's car last week and were very pleased with the numbers it put out.

The plan was to do the heads/cam over the course of a weekend, but once the stock cam was removed, the front cam bearing showed a ton of wear. We pulled the motor and found nearly all the bearings in the motor were showing copper. I was pretty surprised given the relatively low miles (66k).

Anyways, here is the mod list:

Rebuilt LT1
- Stock pistons, rods, cranks
- Total Seal rings
- Clevite main bearings, King rod bearings, coated Durabond cam bearings
- ARP rod bolts
- Melling HV pump
- Canton pan

-Total Engine Airflow (TEA) ported stage 2 LT1 castings (2.00/1.56 Manley valves) ~ 11.0:1 CR; heads flowed ~ 265/200 at peak on Thunder's bench
- Thunder Racing 234/248 .608/.576 110lsa (110ICL) hydraulic roller
- Crane 99893 valvesprings w/ Ti. retainers
- Comp 1.6 rockers (7/16" studs)
- GM guideplates
- FMS 7.350" pushrods
- Morel lifters
- FMS ported LT1 intake manifold

The car is a '95 Z28 6-speeed with Hooker longtubes w/ no cats, Hooker catback, CSI elec. water pump, AS&M 58mm TB, MSD 6A and coil, Dynapark opti, SVO 30lb inj, Racetronix fuel pump, LS1 alum. driveshaft, stock rear w/ 4:10s.

Final #s were: 431rwhp/386rwtq through full exhaust!

I don't have the graph scanned, but I will get to that this week. The #s are SAE corrected and the car pulls to 7k easily.

Needless to say, it is a night and day difference from her bolt-on setup! Huge thanks to everyone involved in getting Nat's car back up and running and Brian @ TEA for a killer set of heads!

Jason

Last edited by Jason99T/A; Nov 20, 2006 at 12:05 PM.
Old Nov 20, 2006 | 12:04 PM
  #2  
93redBirdMan's Avatar
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Dang, I bet that baby gets movin nicely
Old Nov 20, 2006 | 12:09 PM
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Old Nov 20, 2006 | 12:12 PM
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Great numbers! I cant wait to get my TEA ported TFS head motor running. Brian does great work and builds a killer set of heads.

I got a set of fully CNC TFS heads from him. 220cc heads, they flowed 317cfm @ .700. With my SR 355 I hope to put down over 450 thru my auto.
Old Nov 20, 2006 | 12:43 PM
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Very nice numbers.
Old Nov 20, 2006 | 01:03 PM
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Are those cam specs correct or is that a typo, a 14 degree split on intake/exhaust is pretty big.
Old Nov 20, 2006 | 01:18 PM
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Awesome #s!!! You guys do good work.

Also, I can't wait to see if all the AI & LE bandwagon camp nutthuggers decide to give you props or mount the usual H&C attack replies
Old Nov 20, 2006 | 01:22 PM
  #8  
Jason99T/A's Avatar
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Originally Posted by speed_demon24
Are those cam specs correct or is that a typo, a 14 degree split on intake/exhaust is pretty big.
The cam specs are correct!

Thanks for the congrats, everyone!
Old Nov 20, 2006 | 01:26 PM
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and you built this for a girl?
Old Nov 20, 2006 | 01:33 PM
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Originally Posted by speed_demon24
Are those cam specs correct or is that a typo, a 14 degree split on intake/exhaust is pretty big.
I was thinking the same thing. Also, I never knew TR made cams for the LT1. Custom?
Old Nov 20, 2006 | 02:04 PM
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Nice numbers: don't imagine that she will be using it to grocery shop.
Old Nov 20, 2006 | 02:08 PM
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Awesome #'s
Old Nov 20, 2006 | 02:25 PM
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Originally Posted by Eddie Z-28
I was thinking the same thing. Also, I never knew TR made cams for the LT1. Custom?
Anyone that "builds" custom cams usually just figures out the specs and then gets them ground somewhere else. I can't remember who Thunder uses, but they understand what it takes to make power in any SBC or BBC.
Old Nov 20, 2006 | 02:39 PM
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Excellent numbers

Is your girlfriend going to be racing this car?
Old Nov 20, 2006 | 03:40 PM
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Originally Posted by seawolf06
Anyone that "builds" custom cams usually just figures out the specs and then gets them ground somewhere else. I can't remember who Thunder uses, but they understand what it takes to make power in any SBC or BBC.
maybe Comp, but probably CamMotion

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