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

 

Damn good #s...........keep us posted on track times!

 

nice-congrats

 

Thanks. Have any of you guys upgraded to the LS6 pcv system. Just wondering. I switched while the motor was down.

 

What work was done to those AFR heads?

 

None. Out of the box heads. I posted the flow numbers on them a few months back if you do a search you will find it.

 

Thats nice!

 

Whats the LSA on your cam? Any advance built into it?

 

110 lsa. I do not believe it had any advance. I will have to ask Geoff.

 

Nice job!

The folks at Thunder are a great bunch.

How much did you mill the heads or did you go with a slightly domed piston/thin head gasket combo?

 

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.

 

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

 

Here is an awesome vid of when we dynoed the car.http://video.ls1tech.com/Player.aspx...D-D751A27CD8A2