which engine kit

JHodges · 2010-04-01, 14:45

I am building a 351w and abou to order an engine kit. There is 4 that comes up on summit's website and I am not sure which one to get since mine is a bunch of different year parts
I have
an 83 model 351w block
78 351w crank
78 351w front sump oil pan
1969 351w heads
78 timing cover
The motor is .040 over and the crank is .010/.010
which of these kits would you get. I talked with the summit guy and he said the only difference was the gasket kit
this one is for a 77-83 model
http://www.summitracing.com/parts/FE...n/?prefilter=1
this is from 83-87
http://www.summitracing.com/parts/FE...n/?prefilter=1
this one is for 69-74
http://www.summitracing.com/parts/FE...n/?prefilter=1
which one of these kits would you get. I believe the only difference is the oil pan gasket but I am not sure. Any help would be appreciated

JHodges · 2010-04-01, 16:17

anybody know. I believe I will need to go with the one from 77-83 but wanted to be sure before I buy

mean_maverick · 2010-04-01, 16:58

THATS THE ONE I WOULD GO WITH....

BUT NORTHERN AUTO PARTS WILL HAVE A KIT THATS CHEAPER...

JHodges · 2010-04-01, 17:10

all of northerns kits come with stock pistons so I figured they were cast dished pistons, whereas the summit kit comes with spped pro hypers that are flattop and I have read many good things about those pistons

Comick76 · 2010-04-01, 19:45

I've used too many speed pro pistons to not trust them. Cheap and reliable. the main diff in the kits is the gaskets. But mainly for the accessory stuff like EGR and the like. oil pan, intake, valve covers all the same. Choose the kit that has the right gaskets for your accessories. If your using an aftermarket intake and no EGR and using headers any kit should work. Although, the newer model pic looks like it shows a 1 piece rear main. If your block accepts that you should use that kit.

cdeal28078 · 2010-04-02, 17:59

The 1 piece rear seal is one thing I would make sure of. The heads will also have a different intake gasket around the water ports right? Am I right about that guys? It has been a while since I messed with one but I think the early heads have a different shaped water port than later. I also think the intake ports are different sized. Is that something for him to worry about.
You didn't mention it and you probably already know but the imbalance weight of the harmonic balancer and the flex plate/flywheel changed on the 5.0's around 81-82 so if you use any parts off a 302-5.0 keep that in mind. Been a lot of troubles caused by that. The 351w's never changed but people use 302 parts on 351w's a lot and hate to see you get caught up in that
clint

JHodges · 2010-04-02, 18:09

I bought the kit for 77-83 this morning so hopefully it will be ok. I have never heardabout water ports being different

2010-04-01, 14:45	#1
JHodges thumper Join Date: 2006-10-14 Location: Dora Alabama Posts: 1,811 Vehicle(s): 1972 Maverick 351w swap, 1965 Mustang 355 glide, 1993 civic daily driver iTrader: 16 (100%) Images: 35	which engine kit I am building a 351w and abou to order an engine kit. There is 4 that comes up on summit's website and I am not sure which one to get since mine is a bunch of different year parts I have an 83 model 351w block 78 351w crank 78 351w front sump oil pan 1969 351w heads 78 timing cover The motor is .040 over and the crank is .010/.010 which of these kits would you get. I talked with the summit guy and he said the only difference was the gasket kit this one is for a 77-83 model http://www.summitracing.com/parts/FE...n/?prefilter=1 this is from 83-87 http://www.summitracing.com/parts/FE...n/?prefilter=1 this one is for 69-74 http://www.summitracing.com/parts/FE...n/?prefilter=1 which one of these kits would you get. I believe the only difference is the oil pan gasket but I am not sure. Any help would be appreciated __________________ 1972 Maverick 351w c4 street car, et to be determined 1965 mustang 350 glide 7.43 at 91 1971 f100 401fe work truck 2002 z28 bolt ons stock converter and 2.73's daily driver 8.62 at 85

2010-04-01, 16:17	#2
JHodges thumper Join Date: 2006-10-14 Location: Dora Alabama Posts: 1,811 Vehicle(s): 1972 Maverick 351w swap, 1965 Mustang 355 glide, 1993 civic daily driver iTrader: 16 (100%) Images: 35	anybody know. I believe I will need to go with the one from 77-83 but wanted to be sure before I buy __________________ 1972 Maverick 351w c4 street car, et to be determined 1965 mustang 350 glide 7.43 at 91 1971 f100 401fe work truck 2002 z28 bolt ons stock converter and 2.73's daily driver 8.62 at 85 Last edited by JHodges; 2010-04-01 at 16:20.

2010-04-01, 16:58	#3
mean_maverick Senior Member Join Date: 2005-08-29 Location: Irvine, Kentucky Posts: 7,228 Vehicle(s): '73 4dr iTrader: 162 (99%) Images: 15	THATS THE ONE I WOULD GO WITH.... BUT NORTHERN AUTO PARTS WILL HAVE A KIT THATS CHEAPER... __________________ 1971 Grabber Blue 2dr 5.0/T5 -SOLD-, 1973 4dr 302/auto 2003 Ford Mustang Mach 1, Azura Blue http://73grabber.webs.com/1973grabberregistry.htm

2010-04-01, 17:10	#4
JHodges thumper Join Date: 2006-10-14 Location: Dora Alabama Posts: 1,811 Vehicle(s): 1972 Maverick 351w swap, 1965 Mustang 355 glide, 1993 civic daily driver iTrader: 16 (100%) Images: 35	all of northerns kits come with stock pistons so I figured they were cast dished pistons, whereas the summit kit comes with spped pro hypers that are flattop and I have read many good things about those pistons __________________ 1972 Maverick 351w c4 street car, et to be determined 1965 mustang 350 glide 7.43 at 91 1971 f100 401fe work truck 2002 z28 bolt ons stock converter and 2.73's daily driver 8.62 at 85

2010-04-02, 18:09	#7
JHodges thumper Join Date: 2006-10-14 Location: Dora Alabama Posts: 1,811 Vehicle(s): 1972 Maverick 351w swap, 1965 Mustang 355 glide, 1993 civic daily driver iTrader: 16 (100%) Images: 35	I bought the kit for 77-83 this morning so hopefully it will be ok. I have never heardabout water ports being different __________________ 1972 Maverick 351w c4 street car, et to be determined 1965 mustang 350 glide 7.43 at 91 1971 f100 401fe work truck 2002 z28 bolt ons stock converter and 2.73's daily driver 8.62 at 85

2010-04-01, 19:45	#5
Comick76 Grease Monkey Join Date: 2006-05-21 Location: San Angelo, TX Posts: 360 Vehicle(s): 76 Comet iTrader: 2 (100%) Images: 4	I've used too many speed pro pistons to not trust them. Cheap and reliable. the main diff in the kits is the gaskets. But mainly for the accessory stuff like EGR and the like. oil pan, intake, valve covers all the same. Choose the kit that has the right gaskets for your accessories. If your using an aftermarket intake and no EGR and using headers any kit should work. Although, the newer model pic looks like it shows a 1 piece rear main. If your block accepts that you should use that kit.

2010-04-02, 17:59	#6
cdeal28078 Member Join Date: 2005-02-18 Location: North Carolina Posts: 915 Vehicle(s): 71 F100 iTrader: 4 (100%) Images: 3	The 1 piece rear seal is one thing I would make sure of. The heads will also have a different intake gasket around the water ports right? Am I right about that guys? It has been a while since I messed with one but I think the early heads have a different shaped water port than later. I also think the intake ports are different sized. Is that something for him to worry about. You didn't mention it and you probably already know but the imbalance weight of the harmonic balancer and the flex plate/flywheel changed on the 5.0's around 81-82 so if you use any parts off a 302-5.0 keep that in mind. Been a lot of troubles caused by that. The 351w's never changed but people use 302 parts on 351w's a lot and hate to see you get caught up in that clint

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