Heads

69grande351 · 10-04-2004, 08:54 PM

Hey everyone, well I did decide to do the restomod because it will make me grin

. Anyways, I also got some more money from the casino

. I would like to buy a carb, intake, and some heads. I think im going to go with a 600 holley and performer intake. I just cant decide what kind of heads would suit my needs. I want the car to be good on the street, maybe run in the low 14's to 13 seconds. I talked to a guy at a local machine shop, he said that i could just rebuild my stock 302 heads, larger valves etc. Would it be better for me to do that? Or should I upgrade to a better head setup like 351's. Please, I NEED HELP! Thanks. BTW, it is a 69 Mustang with a stock 302, dual flowmasters, and a c-4.

Rev · 10-06-2004, 08:48 PM

The 351W heads will breathe better and make more power than the 302W heads. You will need the afore mentioned induction and a good street cam as well as headers to get the full benefit though. Check into compression ratios for your build up. I think the 302's had dished pistons somewhere along the line. You will want to end up with around 9.5/1 for a strong street engine.

Rev

mustangII460 · 10-06-2004, 10:40 PM

good choice resto

Heres what I would do.

Find you a 302 motor from a fox, roller motor.

Sometimes they can be had fairly cheap, complete. But even if it was to buy for a core, your better off with a , did I say roller motor yet?

Port the stock heads for waaaaaaay less than new heads, new springs & rockers. Unless you got some cash to spend, then buy some AFR's.

If you look around a little, you can save alot of money and have a very decent motor, roller motor that is.

rwhite65 · 10-07-2004, 01:23 AM

mustangII460 is right on. Picked up a roler motor myself to go in around spring. Mine was just remanufactered...bought it minus induction for about $300. If u look, they are out there. Plus, the later model heads are a better design (usually) then the older heads.
Ryan

bmxmon · 10-09-2004, 12:29 AM

I believe if you put the 351 heads on the 302 you have to re tap the block, something with the bolt holes being slightly different sizes, am i right?? I was considering do that and someone to me that, so just decided i would try to pass the info on.

Rev · 10-09-2004, 03:17 PM

Quote:

Originally posted by bmxmon
I believe if you put the 351 heads on the 302 you have to re tap the block, something with the bolt holes being slightly different sizes, am i right?? I was considering do that and someone to me that, so just decided i would try to pass the info on.

The 302 block does have smaller bolts (7/16" for the 302 / 1/2" for the 351, I believe?). The best way to solve that is to use new stepped ARP bolts. Edelbrock does make some stepped washers in order to use the old 302 head bolts with the 351W heads. Certainly no need to drill and tap the block.

Rev

10-04-2004, 08:54 PM	#1
69grande351 Registered Member Join Date: Jun 2004 Location: Minnesota Posts: 16	Heads Hey everyone, well I did decide to do the restomod because it will make me grin . Anyways, I also got some more money from the casino . I would like to buy a carb, intake, and some heads. I think im going to go with a 600 holley and performer intake. I just cant decide what kind of heads would suit my needs. I want the car to be good on the street, maybe run in the low 14's to 13 seconds. I talked to a guy at a local machine shop, he said that i could just rebuild my stock 302 heads, larger valves etc. Would it be better for me to do that? Or should I upgrade to a better head setup like 351's. Please, I NEED HELP! Thanks. BTW, it is a 69 Mustang with a stock 302, dual flowmasters, and a c-4.

10-06-2004, 08:48 PM	#2
Rev Registered Member Join Date: Nov 1998 Location: Houston, Tx. Posts: 3,887	351W heads The 351W heads will breathe better and make more power than the 302W heads. You will need the afore mentioned induction and a good street cam as well as headers to get the full benefit though. Check into compression ratios for your build up. I think the 302's had dished pistons somewhere along the line. You will want to end up with around 9.5/1 for a strong street engine. Rev __________________ '66 Coupe, 306, 350-375 HP, C-4, 13.07 e.t., 104.8 mph, 1/4 mi. O.B.C. #2 '66 coupe

10-06-2004, 10:40 PM	#3
mustangII460 Factoy Five Roadster Join Date: May 2000 Location: Sevier Co,Tennessee Posts: 1,681	good choice resto Heres what I would do. Find you a 302 motor from a fox, roller motor. Sometimes they can be had fairly cheap, complete. But even if it was to buy for a core, your better off with a , did I say roller motor yet? Port the stock heads for waaaaaaay less than new heads, new springs & rockers. Unless you got some cash to spend, then buy some AFR's. If you look around a little, you can save alot of money and have a very decent motor, roller motor that is. __________________ Frank

10-07-2004, 01:23 AM	#4
rwhite65 Ride Hard Join Date: Oct 2000 Location: Wyoming IL Posts: 1,094	mustangII460 is right on. Picked up a roler motor myself to go in around spring. Mine was just remanufactered...bought it minus induction for about $300. If u look, they are out there. Plus, the later model heads are a better design (usually) then the older heads. Ryan __________________ 65 Fastback 91 roller 306, H/C/I AOD-Bauman, PI Stallion, 4.10's and traction loc 04 Grand Cherokee Freedom Edition 79 Ford F-250 4x4 - Restored

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10-09-2004, 12:29 AM	#5
bmxmon Registered Member Join Date: Mar 2004 Location: Minnesota Posts: 950	I believe if you put the 351 heads on the 302 you have to re tap the block, something with the bolt holes being slightly different sizes, am i right?? I was considering do that and someone to me that, so just decided i would try to pass the info on.