Street/Strip Engine help

greg fulk · 08-17-2011, 01:49 AM

Hello guys! Hey I'm wanting to build a "milder" engine for the Camaro. 1st I'm building it with what parts I already have...goal is to run between 13.00 & 13.20. What I have .040 over 350 block , 3.25 crank, Manley rods, Performer intake, Deano Q-Jet , 9" converter (foot brakes 2700) 4.11 gears . (BTW this is a 67 Camaro) My question is what heads to use???? I have 520, 416, 624, 441, & a set off my dad's 86 Chevy truck that had a 305 but can't find the #'s in the blueprints. The 441's are 1.94 int 1.60ext. the others are bare/OEM stock. I'm think of putting 1.94 valves in the truck heads leave the 1.50 exh (hardened exh seats) gasket match them & go. What would you guys do??? Also flat top or .150 dome pistons??

Robert Simpson · 08-17-2011, 07:23 AM

Greg, I would like to buy the 441's from you if you don't use them. With that being said the 441's would work just fine but like you said for any long term street car you need to have hardened seats installed. I have used the 416's with good success on small motors 305's and 307's. But they come with the 1.84's, which I believe you can up to 1.94's. Don't use the 520's the runners are two small for this application. I know they were used on 250hp 327's but you have a choice for a better head. But, from my experience if you can swing it get a set of later model vortec heads. I can't remember the p# but out of the box with a low lift street cam they really do work! I do not see you combo having any problem running the times desired. Good luck. By the way your converter, that is a 10" correct? Let me know about the heads?

Billy Nees · 08-17-2011, 08:06 AM

Use 416s with 1.84 valve and flat piston.

08-17-2011, 01:49 AM	#1
greg fulk VIP Member Join Date: Jan 2003 Location: jackson Posts: 1,165 Likes: 0 Liked 5 Times in 3 Posts	Street/Strip Engine help Hello guys! Hey I'm wanting to build a "milder" engine for the Camaro. 1st I'm building it with what parts I already have...goal is to run between 13.00 & 13.20. What I have .040 over 350 block , 3.25 crank, Manley rods, Performer intake, Deano Q-Jet , 9" converter (foot brakes 2700) 4.11 gears . (BTW this is a 67 Camaro) My question is what heads to use???? I have 520, 416, 624, 441, & a set off my dad's 86 Chevy truck that had a 305 but can't find the #'s in the blueprints. The 441's are 1.94 int 1.60ext. the others are bare/OEM stock. I'm think of putting 1.94 valves in the truck heads leave the 1.50 exh (hardened exh seats) gasket match them & go. What would you guys do??? Also flat top or .150 dome pistons?? __________________ Greg Fulk 308 308X P/SA "ALL AMERICAN"

08-17-2011, 07:23 AM	#2
Robert Simpson Senior Member Join Date: Aug 2004 Location: Jacksonville, Florida Posts: 803 Likes: 6 Liked 20 Times in 12 Posts	Re: Street/Strip Engine help Greg, I would like to buy the 441's from you if you don't use them. With that being said the 441's would work just fine but like you said for any long term street car you need to have hardened seats installed. I have used the 416's with good success on small motors 305's and 307's. But they come with the 1.84's, which I believe you can up to 1.94's. Don't use the 520's the runners are two small for this application. I know they were used on 250hp 327's but you have a choice for a better head. But, from my experience if you can swing it get a set of later model vortec heads. I can't remember the p# but out of the box with a low lift street cam they really do work! I do not see you combo having any problem running the times desired. Good luck. By the way your converter, that is a 10" correct? Let me know about the heads?

08-17-2011, 08:06 AM	#3
Billy Nees VIP Member Join Date: Oct 2002 Location: On a hilltop in Pa. Posts: 4,234 Likes: 3,132 Liked 6,840 Times in 1,535 Posts	Re: Street/Strip Engine help Use 416s with 1.84 valve and flat piston. __________________ Billy Nees 1188 STK, SS Reality, what a concept!