WebJan 23, 2011 · beartoothweb, The thumper heads are great performers as are the gt40-p heads. I think the ported thumper heads will out perform the stock gt40-p. But a ported and milled set of those gt40-p will flat haul.I think your cam selected is pretty good. WebSpecialists in cylinder head and intake manifold CNC porting, designing, manufacturing and machining for late model street and race cars. 832-619-1622 7413 Wright Rd. Houston, TX …
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WebFeb 13, 2007 · in order for the porting to be of any real gain the intake valves need to be oversize at minimum.the addition of oversize ex valves is also benificial for certain uses. a oversize valves and porting is 2-3hp on a 470. Wayward Son Posted February 13, 2007 Hello to all, I just picked up a big bore kit & stage # 1 intake & exhaust cams from hot cams. WebDec 22, 2007 · Mike Schultz, at Thumper Performance, is a wizard for making cheap power. His ported heads on basic bolt-on cars run mid to low 12's. With a small shot of nitrous some have gone as fast as the upper 10's. That's customer reports, not Mike talking. foot pain on top hurts with pressure
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WebOct 9, 2009 · Jun 12, 2006. #1. I have a TMOSS ported lower and a stock upper intake off of a 93 Mustang on my 86. I have Thumper's heads. A guy I know is selling a lightly ported Cobra Intake for 200. I am wanting to know if this is a worth while swap, if I will notice any gains. From the TMOSS/Thumper setup along with a 65 mm FRPP TB I gained 40 hp and … WebMar 30, 2013 · Save the $500+ that you'd spend on having some one port your heads and put it toward an aftermarket aluminum head that will flow better, not to mention will be a much better starting platform for your valvetrain and will knock ~40 lbs off … WebSep 6, 2007 · Aug 14, 2007. #4. GTOReturns said: Thumper heads + cam with good intake = 12's all day long! I have Thumpers with a T-Moss intake and love em! I ran a 13.8 just with the T-Moss. Im hoping to get to the track by the end of the year. Ive since added an X pipe so I would be real happy with mid 13's. elf on the shelf animated picture