351W headers on 302

91GTinSC · 02-25-2006, 08:31 PM

I have 91 GT, and I also have a set of brand new headers made for a 351W swap into a mustang, they are Mac 1 5/8" long tube equal length headers, I bought them for another application that I am not going to use them for now, what I am wondering is will those headers bolt up to the 302 in my car?

Gearhead999 · 02-25-2006, 10:26 PM

They will surely bolt to the engine. The 351 is wider...so they might terminate a tad different.

I'd try them...

vristang · 02-26-2006, 01:55 AM

Yep, they will bolt to the heads no prob, but you may not be happy with some clearances, like starter to header, etc. The swap headers are designed to fit tighter to the block.

If you do test fit them, please post how they fit.

jason

91GTinSC · 02-26-2006, 08:46 PM

I knew they were designed to hug the block to compensate for the wider 351 that's why I wasn't sure if they would work, thanks for your help, I will probably be trying them in the next week or two. later

02-25-2006, 08:31 PM	#1
91GTinSC Registered Member Join Date: Feb 2006 Posts: 2	351W headers on 302 I have 91 GT, and I also have a set of brand new headers made for a 351W swap into a mustang, they are Mac 1 5/8" long tube equal length headers, I bought them for another application that I am not going to use them for now, what I am wondering is will those headers bolt up to the 302 in my car?

02-25-2006, 10:26 PM	#2
Gearhead999 Registered Member Join Date: Sep 1998 Location: Oviedo, FL Posts: 992	Re: 351W headers on 302 They will surely bolt to the engine. The 351 is wider...so they might terminate a tad different. I'd try them... __________________ "Support our Troops" Dave 1968 Cougar 2004 Thunderbird 2007 F150 Harley-Davidson, SuperCrew 1986 LTD 1997 Ranger 1992 Honda Civic

02-26-2006, 01:55 AM	#3
vristang Registered Member Join Date: Feb 2006 Posts: 50	Re: 351W headers on 302 Yep, they will bolt to the heads no prob, but you may not be happy with some clearances, like starter to header, etc. The swap headers are designed to fit tighter to the block. If you do test fit them, please post how they fit. jason __________________ Check out my new Mustang website! - Including: TwEECer, EEC-IV, C&L, 351w Fox Swaps, PCV Oil Control, and more. 1990 GT - 408w - 17mpg TwEECer RT 1.30A10 - X3Z - A9L strat. / EA Forged Bottom End / Gapless Rings / CR 8.85:1 / Custom Cam / Ported Trick Flow Heads / Box Upr / Lightning Lwr 17x9 Cobras / Front 255s / Rear 275s / 5 Lug Cobra Disc Conversion / Auburn Ltd. Slip / 3.27 / 31 spline axles / Panhard Rod / Upr&Lwr Control Arms 1987 Red LX - 2.3L - Planning 2.3t Converison

02-26-2006, 08:46 PM	#4
91GTinSC Registered Member Join Date: Feb 2006 Posts: 2	Re: 351W headers on 302 I knew they were designed to hug the block to compensate for the wider 351 that's why I wasn't sure if they would work, thanks for your help, I will probably be trying them in the next week or two. later

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