i have just about finished picking the parts for my 350 swap. i have decided to use the vortec heads w/ the "LT4 hot cam" kit.

will the spring from the kit fit the heads w/o any work on the heads.


TIA,
RS

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(A.K.A FireBird88)
AOL SN: Zander0710
1992 Camaro RS 25th anniversary edition Adopted Feb,14 2000

Mods:
14x3 Open element w/ K&N filter, MSD GM blaster Coil and 8.5 SC wires, AFPR, 60psi. Fuel Pressure gauge, 3-Row Al rad. , 180* t-stat, Hooker 1 5/8 headers, 3" Catco cat, 3" Hooker Aero Chamber cat-back, "Ultimate TBI" mods

[This message has been edited by UnderDogRS (edited November 06, 2000).]

 

I dont see why they wouldnt, what you need to be concerned about is the compressed clearance between the spring retainer and the valve seal. That could be a problem but i think youll be allright, if not you can always have the heads machined or use different retainers. You probably wont have this problem though why not email SDPC and ask? Im sure someone has run that combo before
and good choice! i wanna see how it runs!

 

you better call a technical #. I tried to run stock springs off an L05 on my vortecs and they didnt fit. Just a thought, try comp cams or a GMPP tech #

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91 RS W/carbed 350, Vortec heads, performer rpm, Comp cams Xtreme energy 280 grind. BFG Drag radials. 3.42 posi,Corvette servoed 700r4, ****ty stock converter
13.24@104

 

Stock I think the vortecs are rated for .470 lift. The hot cam does .525 I think.

 

I have that exact combo. You will have to change springs. I went to 2.02 and 1.60 valves and GMPP LT4 springs. It costs more to have the heads machined, but it is well worth it.



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Kelly 'GhoSSt' Rosato
1996 Impala SS, 383 LT4 (14.65 up here, 13.24 lower)
1984 Firebird, +.060 350 (Vortech Heads, HOT Cam, and schtuff)
1993 Caprice, 5.7 TBI (stock . . . FOR NOW)

"And if you wrong us, shall we not revenge? Revenge. The villany you
teach me, I will execute, and it shall go hard but I will better the
instruction."

Shylock in Act III, Scene I of 'Merchant of Venice' by William Shakespeare