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L695speed · 03-22-2012, 01:11 PM

I talked to Chuck at Chucks Automotive Machining in Harmony off CR 519, he says it would be 4K and up. Pointed out that I could probably get what I want out of a Vortec 350 with a cam, flat tops, and port work. Realistically what would it take to get a early third gen F body into the mid 12s? 400? 450 HP?

The car weighs according to the invoice I got from PHS at 3200. 3350 with driver. I've ridden in 12 second cars so I know what I'm getting into. So lets say I do this.

Get a Vortec truck motor and convert it a carb, run the mechanical pump at the block, RPM Air Gap intake, LT4 roller Hot Cam, flat top pistons, LS1 or LS6 valve springs and maybe roller rockers. Port the heads to match the intake and vice versa. Drop the thing in there. Don't vortecs already run 330 HP? I may run a 282 or 276 cam instead of the LT4 Hotcam but it makes more sense to go with a roller cam.

Does anyone have a lead on a decent Vortec truck motor? I can ask at Newton auto salvage to see what hes got and what he wants, could ask a couple other places too. I figure if I do something like the above build, I can always stroke the bottom end over a winter and get more power out of that.

03-22-2012, 01:11 PM	#6
L695speed Join Date: Apr 2009 Location: Andover, NJ Posts: 777 iTrader: (0)	May lower the power figure, mid/low 12s are easily done with less power. I talked to Chuck at Chucks Automotive Machining in Harmony off CR 519, he says it would be 4K and up. Pointed out that I could probably get what I want out of a Vortec 350 with a cam, flat tops, and port work. Realistically what would it take to get a early third gen F body into the mid 12s? 400? 450 HP? The car weighs according to the invoice I got from PHS at 3200. 3350 with driver. I've ridden in 12 second cars so I know what I'm getting into. So lets say I do this. Get a Vortec truck motor and convert it a carb, run the mechanical pump at the block, RPM Air Gap intake, LT4 roller Hot Cam, flat top pistons, LS1 or LS6 valve springs and maybe roller rockers. Port the heads to match the intake and vice versa. Drop the thing in there. Don't vortecs already run 330 HP? I may run a 282 or 276 cam instead of the LT4 Hotcam but it makes more sense to go with a roller cam. Does anyone have a lead on a decent Vortec truck motor? I can ask at Newton auto salvage to see what hes got and what he wants, could ask a couple other places too. I figure if I do something like the above build, I can always stroke the bottom end over a winter and get more power out of that.