quickLT1

I bought my Camaro several months back,it has thunder racing stage 2 heads on it.I was just wondering if they are a good head compared to some of the really popular head packages Ive seen. Also with these heads and a cc306 cam,full boltons(except cutout and e.w.p.), do you think I can make 400 rwhp?A4 by the way.

seawolf06

iTrader: (8)

Those might be ported by GTP since I think that's who they used to send heads out to. I don't think the port them in house.

You can call and ask. Did the previous owner tell you that's what was on it or is it stamped?

quickLT1

The previous owner wasnt the one that got the work done but he had the receipt for all the parts.It listed the heads and cam package on there as well as most of the boltons.

seawolf06

iTrader: (8)

Then I'd say call and ask Thunder.

quickLT1

Call them and ask them what? Since they are the manufacturer of these heads they will probably tell me they are the best out there. I wanna know some of you guys 1st hand experiences with these heads.

speed_demon24

iTrader: (6)

Yeah because everyone on here will know how good the heads you have are just because they were bought from thunder racing, even though we don't have any idea what kind of heads they are, stock castings, afr's, trickflows, ect, or who they were ported by and when. Or what converter you have, what driveline its going to be dyno'd through, what kind of dyno it's going to be dyno'd on, or what the rest of your supporting mods are.

quickLT1

All the receipt said was thunder racing stage 2 heads, and cam package. Also said $2795.Wouldnt that make you think they were thunder racing heads too?

91Z28

Thunder sells them, but that says nothign about who cast them (AFR, TFS, GM, etc) since Thunder Racing does NOT cast heads. I don't even think they port heads either. They sell a product, that is it.

quickLT1

Thanks for the help guys with my obvious lack of knowledge on thunder racing. I have emailed them before but they never got back with me.I guess I will try calling them instead.

seawolf06

iTrader: (8)

They are really busy. Call them and ask who ports the heads for them and what the "stage 2" consists of. They do not do it in house. I'm almost certain they are GTP stage 2 heads.

Can you read the casting numbers on the heads? They should be under the valve cover. Any aftermarket heads should have the name stamped on there.

MEAN LT1

iTrader: (2)

I dont think GTP is still around?. Last time I checked Larry Meaux was porting heads for them and Futral.

95 Formula

iTrader: (2)

Meaux is porting for futral but not thunder as far as I know. All their stuff was done by gtp for a long time. They did some inhouse stuff when steve stumph worked there but he left. I doubt you have a set of those heads.

infinitebird

iTrader: (11)

http://thunderracing.com/catalog/?ac...vid=4&pcid=114

They are still advertising the heads as done by GTP on their site.

Z8'S

iTrader: (6)

GTP is still around! Craig just did a set of AFR 215 RR's for my Twin Turbo LT1 setup.

seawolf06

iTrader: (8)

See and I didn't even bother checking the site. I'm just THAT good.

quickLT1

Im guessing that my heads are definately the GTP heads.The car was sent down there in 2001 or 2002 to get the work done to them.

quickLT1

How would I go about getting info on my specific car from them because I cant remember the guys name who sent the car to them.I dont have the receipt either.

seawolf06

iTrader: (8)

They probably won't have any clue. They do hundreds of cars there.