302 and 351 common parts?

redrider · 05-02-2001, 08:01 AM

Can you transfer a main girdle from a 302 to a 351? Can you swap heads between a 302/351?

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88 GT mass air conversion from 90lx, Cobra Intake(ported/polished lower),Edlebrock Heads(ported/polished),24# injectors 70 mm BBK TB, 73mm C&L, 347 SB, Wolverine custom cam, 150 shot Nitrous, BBK 1 3/4 long tubes, BBK off road H pipe, Dynomax cat back, alum driveshaft, Konis,Southside Bars w chromemoly torque boxes,AOD w lentech valve body, B&M MegaShifter, 4.10 with Auburn diff, SVO springs, subs, cross drilled rotors,MSD A6 w ign retard, black magic fan etc.

Shaggy · 05-02-2001, 10:42 AM

Heads yes, main girdle no

82 GT · 05-02-2001, 10:15 PM

Heads yes, but it's not just a bolt on.
You must make sure the water jackets line up and they use different head bolt sizes.
302=7/16
351=3/8

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'82 GT 351W C-4,BBK headers,Carter 625 carb,Comp.Cam,Flowmaster exhaust.
1988 GT...T-5,bone stock

smokedchevy · 05-03-2001, 01:08 AM

Make sure you use a 351 intake even with those 302 heads.

btr · 05-03-2001, 01:12 PM

Quote:

Originally posted by 82 GT:
Heads yes, but it's not just a bolt on.
You must make sure the water jackets line up and they use different head bolt sizes.
302=7/16
351=3/8

It's 351 = 1/2

82 GT · 05-03-2001, 03:51 PM

smokedchevy, he will have to use the 351 intake bacause the intakes don't interchange.
BTR,I caught my mistake about the head bolt sizes after I posted, figuring that someone would notice it and correct it. Thanks

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'82 GT 351W C-4,BBK headers,Carter 625 carb,Comp.Cam,Flowmaster exhaust.
1988 GT...T-5,bone stock

dinomite · 05-03-2001, 04:34 PM

btr is right, its 1/2 for 351. The lower intakes are different, given the larger deck height of the 351, and therefore larger separation between the heads (which is where the intake goes. Uppers should be interchangable, as well as heads.

05-02-2001, 08:01 AM	#1
redrider Registered Member Join Date: Apr 1999 Location: seffner, Florida, usa Posts: 95	302 and 351 common parts? Can you transfer a main girdle from a 302 to a 351? Can you swap heads between a 302/351? ------------------ 88 GT mass air conversion from 90lx, Cobra Intake(ported/polished lower),Edlebrock Heads(ported/polished),24# injectors 70 mm BBK TB, 73mm C&L, 347 SB, Wolverine custom cam, 150 shot Nitrous, BBK 1 3/4 long tubes, BBK off road H pipe, Dynomax cat back, alum driveshaft, Konis,Southside Bars w chromemoly torque boxes,AOD w lentech valve body, B&M MegaShifter, 4.10 with Auburn diff, SVO springs, subs, cross drilled rotors,MSD A6 w ign retard, black magic fan etc.

05-02-2001, 10:42 AM	#2
Shaggy Registered Member Join Date: Feb 1999 Location: Houston,TX Posts: 466	Heads yes, main girdle no

05-02-2001, 10:15 PM	#3
82 GT Import Slayer Join Date: May 1999 Posts: 2,241	Heads yes, but it's not just a bolt on. You must make sure the water jackets line up and they use different head bolt sizes. 302=7/16 351=3/8 ------------------ '82 GT 351W C-4,BBK headers,Carter 625 carb,Comp.Cam,Flowmaster exhaust. 1988 GT...T-5,bone stock

05-03-2001, 01:08 AM	#4
smokedchevy Registered Member Join Date: Jun 2000 Location: ventura,CA Posts: 438	Make sure you use a 351 intake even with those 302 heads.

05-03-2001, 03:51 PM	#6
82 GT Import Slayer Join Date: May 1999 Posts: 2,241	smokedchevy, he will have to use the 351 intake bacause the intakes don't interchange. BTR,I caught my mistake about the head bolt sizes after I posted, figuring that someone would notice it and correct it. Thanks ------------------ '82 GT 351W C-4,BBK headers,Carter 625 carb,Comp.Cam,Flowmaster exhaust. 1988 GT...T-5,bone stock

05-03-2001, 04:34 PM	#7
dinomite The Dude Join Date: Feb 2001 Location: Arlington, VA Posts: 1,262	btr is right, its 1/2 for 351. The lower intakes are different, given the larger deck height of the 351, and therefore larger separation between the heads (which is where the intake goes. Uppers should be interchangable, as well as heads.