I was told just the other day that GM makes a vortec head with a regular intake bolt pattern so I could use them with a regular performer RPM intake instead of having to buy the performer RPM vortec intake! Anybody heard anything about this and know what the price is??

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1986 Trans AM
305 TPI
200,000+ miles (speedo/odometer non-funtional! Odometer reads 142,000)
4 Wheel Discs
9 bolt Borg Warner Rear (2.73's....oh joy) :P
Completely Stock
Soon to upgrade to a 350 converted from TPI to Carb, Edelbrock 750CFM Carb, Edelbrock Performer RPM Intake, Headman Shorty Headers, Some sort of ported heads (undecided), XE268 Cam, Moroso HEI ignition kit with external MSD Blaster II Coil and an MSD 6-AL Box!!
Current project: Keeping my 305 running until I get my income tax returns!

 

GM doesn't make the heads with the old bolt pattern. If you want them, you have to get them through a Performance Parts dealer like Jim Pace for like $50 more. I wouldnt recommend gettin the heads with the old style pattern, drilling them for old style intakes puts the bolts real close to the ports. Id just get the Vortec-specific Edelbrock intake, I hear it performs good and its not much more than the regular intake

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'83 Firebird 2.8
'89 Firebird Formula 350
2nd owner, red/grey, t-tops, dual cats, and a 3.27:1 rear
K&N, TB bypass, No MAF screens, CAI, full Accel ignition

 

You can't use the performer intake even if you get the drilled heads. There isn't enough material to seal the intake ports. You have to run the Perf. RPM or the Vic Jr.

-Lars

 

Edelbrock makes a performer intake for vortec heads, so get that one. You,ll find it in summit or jegs catalog or on their web site.www.summitracing.com or www.jegs.com There about 170.00 bucks I think. The summit part # is EDL-2116 and jegs is 350-2116 check them out.

Steve




[This message has been edited by steve8586iroc (edited March 03, 2001).]

 

there is no heads made that are "vortec" that have the regular bolt pattern get the intake for vortec or regular heads. and a regular intake!

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89 firebird formula


356 10.7:1compression
comp cams xe262 cam
performer rpm intake
#1405 edlebrock 600
434 casting completely redone with bronze guides and 202/160 valves 64cc chambers. decked .0005 thousandths
msd 6al
h.e.i. proform 50,000 volt vac. advance ditributor
700r-4 with 3.08 first gear and 3.23 posi 7 5/8 rear end.
b trans shift kit(will kill shifts...suck dong!!)
shorty heddman hedders with custom 3" pipe y-pipe back(no damn cat!) with 40 series flowmaster!

future mods: 406 roller REALLY REALLY REALLY RADICAL!!!!!