350 TBI heads, lightly worked,fresh! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**crossy** · 03-08-2002, 11:40 AM

I just got these heads done .New Z28 springs and 'GOOD' valve seals , 3 angle valve job , all new intake valves, shaved only for tru-ness, inlet valve area (just below the valve seat)relieved with CNC machine,Minor inlet stem guide blending. exhaust side has bowl & stem guide blending and short side radius work done. never installed afterwards. fit 87-95 350's. I saw an identical set make 20- 25 HP on Dyno, more HP with chip & typical modifications.plus they are true 'bolt ons' Unlike the vortecs.I have $450 in them plus some of the work I did & core price, but i only want the $475 back out of them.plus shipping. The man who helped me with these works hand-in-hand with GM on engine development. , thanx , DAVE

**crossy** · 07-28-2002, 02:04 PM

tttt

**crossy** · 02-07-2003, 01:21 AM

top

ChopTop · 02-16-2003, 12:02 PM

what is the chamber size on the TBI heads?

**crossy** · 02-16-2003, 02:08 PM

probably 65 because I know the 305 versions, that have smaller chambers, are only 58. DAVE

ChopTop · 02-17-2003, 10:13 PM

ok, I am looking around for some 68-69cc heads.

03-08-2002, 11:40 AM	#1
crossy Oh,you can't buy that new Join Date: Apr 2000 Location: Pennsville,N.J. 08070, USA Posts: 2,039	350 TBI heads, lightly worked,fresh! I just got these heads done .New Z28 springs and 'GOOD' valve seals , 3 angle valve job , all new intake valves, shaved only for tru-ness, inlet valve area (just below the valve seat)relieved with CNC machine,Minor inlet stem guide blending. exhaust side has bowl & stem guide blending and short side radius work done. never installed afterwards. fit 87-95 350's. I saw an identical set make 20- 25 HP on Dyno, more HP with chip & typical modifications.plus they are true 'bolt ons' Unlike the vortecs.I have $450 in them plus some of the work I did & core price, but i only want the $475 back out of them.plus shipping. The man who helped me with these works hand-in-hand with GM on engine development. , thanx , DAVE __________________ "been there, done that, ruined the T-shirt". 2007 LBZ GMC Sierra, ECSB 2006 LM7 RCSB Silverado 98 Vortec project. 94,3500,6.5L 4L80 81 SWB GMC POS finally gone 73 Pinto, stock, w/CragarSS's-eww LOTS of Cummins trucks.

07-28-2002, 02:04 PM	#2
crossy Oh,you can't buy that new Join Date: Apr 2000 Location: Pennsville,N.J. 08070, USA Posts: 2,039	TBI heads tttt __________________ "been there, done that, ruined the T-shirt". 2007 LBZ GMC Sierra, ECSB 2006 LM7 RCSB Silverado 98 Vortec project. 94,3500,6.5L 4L80 81 SWB GMC POS finally gone 73 Pinto, stock, w/CragarSS's-eww LOTS of Cummins trucks.

02-07-2003, 01:21 AM	#3
crossy Oh,you can't buy that new Join Date: Apr 2000 Location: Pennsville,N.J. 08070, USA Posts: 2,039	top __________________ "been there, done that, ruined the T-shirt". 2007 LBZ GMC Sierra, ECSB 2006 LM7 RCSB Silverado 98 Vortec project. 94,3500,6.5L 4L80 81 SWB GMC POS finally gone 73 Pinto, stock, w/CragarSS's-eww LOTS of Cummins trucks.

02-16-2003, 12:02 PM	#4
ChopTop Registered User Join Date: Jun 2001 Location: KINGWOOD TEXAS Posts: 515	what is the chamber size on the TBI heads? __________________ Member of the "Old Farts Club"

02-16-2003, 02:08 PM	#5
crossy Oh,you can't buy that new Join Date: Apr 2000 Location: Pennsville,N.J. 08070, USA Posts: 2,039	probably 65 because I know the 305 versions, that have smaller chambers, are only 58. DAVE __________________ "been there, done that, ruined the T-shirt". 2007 LBZ GMC Sierra, ECSB 2006 LM7 RCSB Silverado 98 Vortec project. 94,3500,6.5L 4L80 81 SWB GMC POS finally gone 73 Pinto, stock, w/CragarSS's-eww LOTS of Cummins trucks.

02-17-2003, 10:13 PM	#6
ChopTop Registered User Join Date: Jun 2001 Location: KINGWOOD TEXAS Posts: 515	ok, I am looking around for some 68-69cc heads. __________________ Member of the "Old Farts Club"



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