LS1this

for the $ this thumper package seems like pretty good deal

http://www.thumperoforangepark.com/

tooslow5.0

hey ls1, awsome link. that seems like a great deal if he does good work. would it be worth the 175 having him add gt40 valves?

drhoward

I got thumper to port my gt40p heads, he does an awsome job. I am not sure about his packages but his porting work is first rate and he is a really good guy to deal with

vtecwho

my hci is not "the best" but it gave me the hp in my sig. its a VERY basic set up and im very happy with it. i know of a guy that has edelbrock performer heads and a tfs II cam and he only makes 271 tuned....but runs 12.7s.
for what i have, i dont think it would even cost you a grand. gt40 heads unported have a little lower compression so take that 800 left over and save for a sc and boost it to 5lbs!

LS1this

good Q, I was wondering that also, my guess is if you were going to run a bigger cam than he recommends with the package or were planning to go forced induction down the road it might be worth it.

Mustangkiler

If you get a supercharger you wont be running 5lbs for long.

KovacMotorsports

In my opinion a good budget H/C/I setup would be Thumper ported GT40p's with SS valves and a Crane rocker arm stud conversion, Scorpion roller rockers, TFS stage 1 cam, and a good used intake ( i.e. Eddy, Trick flow, Holley, etc.) or a new Typhoon.

tooslow5.0

wow, alot of good info on this thread- thanks guys! is it possible to mill the gt40 heads to regain some compression? or does it screw up the port and bolt alignment for the intake?

ZachW04Stang

gt40ps, comp xe270-14 cam, and trickflow intake. I make power from 1800-5900 rpm and cost is very cheap. Around $1000, cheaper if you get the intake and cam used.

QatarStang

Nice vid iceman, you destroyed that 'maro on the launch and whooped his *** up top.