Thunder Racing 408 info
06-19-2005, 09:55 AM
#1
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Thunder Racing 408 info Been down at TR for the past few days while Geoff has been tuning the car. Yesterday afternoon I took several rides with him in this thing and I can't say enough about the drivability of this car. Pretty damn tame at regular cruising speeds and Feels unbelievable when in the throttle. Absolutely no surging or bucking issues. Put it on the dyno today for WOT tuning. I am sure I will get to take it home this week. My header is touching the steering shaft. So that got to be fixed this week, do another oil change and it should be ready to take home.
523hp/475tq thru full exhaust
534hp/486tq open header
These are very impressive numbers. I am pleased with thunder and would recommend anyone to build a motor with them. 1yr warranty when installed by Thunder. Did you read the latest GM Tech magazine. No one else will stand by their work like this(NO ONE). Thanks to All Thunder Staff.
Here is a list of all modifications
TR 408
GM 6.0l block .030over 11.6CR
eagle 4.00 crank
Diamond pistons/Manley rods
AFR 225 heads
248/254 cam
Fast Intake/ NW Throttle Body
1 7/8 QTP w/high velecity collector.
Custom Y-pipe
Hooker Cat-back
BMR K-Member & A-arms
Baer Eradispeed
Moser 12-bolt 4.11
Also watched Geoff tune a TA with stock block and stock heads with a t-rex and 4400 stall and he has that car driving without any problems whatsoever. Hands down He has got to be one of the best tuners in the country on these big cam cars.
Can't wait for track times
523hp/475tq thru full exhaust
534hp/486tq open header
These are very impressive numbers. I am pleased with thunder and would recommend anyone to build a motor with them. 1yr warranty when installed by Thunder. Did you read the latest GM Tech magazine. No one else will stand by their work like this(NO ONE). Thanks to All Thunder Staff.
Here is a list of all modifications
TR 408
GM 6.0l block .030over 11.6CR
eagle 4.00 crank
Diamond pistons/Manley rods
AFR 225 heads
248/254 cam
Fast Intake/ NW Throttle Body
1 7/8 QTP w/high velecity collector.
Custom Y-pipe
Hooker Cat-back
BMR K-Member & A-arms
Baer Eradispeed
Moser 12-bolt 4.11
Also watched Geoff tune a TA with stock block and stock heads with a t-rex and 4400 stall and he has that car driving without any problems whatsoever. Hands down He has got to be one of the best tuners in the country on these big cam cars.
Can't wait for track times
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06-20-2005, 09:32 AM
#11
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I know they milled the heads slightly, but I don't have the exact number. I can get that later today. Maybe I can ask Jason to chime in and give some specifics on everything.
06-20-2005, 07:45 PM
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I am looking to by a 408 motor and wondering if you don't mind telling but how much did the full set up cost. I am asking because I want to know how much money I am looking to spend. If you want you can pm me the price. Thanx
06-20-2005, 08:53 PM
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Here is an awesome vid of when we dynoed the car.http://video.ls1tech.com/Player.aspx...D-D751A27CD8A2