These are BRAND NEW, never installed TFS Twisted Wedge G2 versions (SBC) heads, for 87-up GEN-1 blocks. They can be used on earlier 87 and below SBC, as long as you use center-bolt valvecovers. They can be used on any SBC combination, including the 400 SBC, since they are steam hole drilled from TRICKFLOW. They are assembled with the 1.440" springs. Pictures can be provided.

$950 shipped in the Lower 48 States.

Reason for selling, is I'm into the LT-1's now. LMK

I just spoke to "Charlie" at Trick Flow a few minutes ago @ 330-630-1555 and these are the specs he quoted me about these heads:
87-95 TRICKFLOW TWISTED WEDGE G2 HEADS (CENTERBOLT VALVECOVER)
VALVE SIZE - 2.02" Intake 1.60" Exhaust
COMBUSTION CHAMBER - 66cc
INTAKE RUNNER SIZE - 189cc
EXHAUST RUNNER SIZE - 78cc
VALVE SPRING SIZE - 1.440" (Made by a popular spring producer)
VALVE RETAINER SIZE - 1.440"
VALVE LIFT - .540" MAX LIFT, with these springs
ROCKER ARMS - CRANE "NARROW BODY" 1.5:1 or 1.6:1 or equivalent, since these are Centerbolt valvecover drilled
SPARKPLUG TYPE - Autolite 3924 3/4" gaskets type
PUSHROD GUIDEPLATE REQUIRED - TRICKFLOW P/N 31500623
ROCKER STUDS REQUIRED - ARP P/N 1347104 3/8" Studs
INTAKE FLOW - 257 CFM @.500" lift @ 28Hg
EXHAUST FLOW - 205 CFM @.500" lift @ 28Hg
PUSHROD INTAKE - 7.8" suggested, but you MUST CHECK IT FOR YOURSELF!!!
PUSHROD EXHAUST - 7.8" suggested, but you MUST CHECK IT FOR YOURSELF!!!

 

fwiw you can have them converted to reverse flow cooling for lt1s for 275, out of curiousity though what kind of flow number do they put down.

 

Who will convert them for $275?

 

Hey i didn't know they could be converted to LT-1 reverse cooling, that is FASCINATING . Who performas the service? I would be intersted in some information on that, and some pictures. I don't have any flow numbers on them, but a test was done a few years back, IIRC by CHP, and they flowed very close to AFR 190's, I think. I have the magazine article at home, so I will review it again. If you have a link to the shop that performs this service, that would be great. I know people convert LT-1 heads to SBC, but I haven't seen the opposite conversion. RSVP ASAP. Thanks.

 

http://www.hardenmotorsports.com/
http://www.cfmperformance.com/

 

Thanks for the links, but those sites don't provide any obvious information about converting SBC heads to REVERSE COOLING LT-1 style. Maybe I would have to call them.

 

They do it, you'll just have to call. Some guy said that cfmperformance only quoted him 250 to convert.

 

TTT with new information directly from TRICKFLOW.