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- - HELP! 454 motor swap (https://67-72chevytrucks.com/vboard/showthread.php?t=656354)

shortbednewbie

01-14-2015 12:59 AM

HELP! 454 motor swap

Im doing a 454 motor swap and i have the monster sitting in the 86 C10. any idea what type of headers to use in the C10?

68post

01-14-2015 01:44 AM

Re: HELP! 454 motor swap

http://www.summitracing.com/search/p...0454%20headers

Here are alot of choices , take a look and post any questions back here.
Will this engine be dead stock, or...?

shortbednewbie

01-14-2015 02:46 AM

Re: HELP! 454 motor swap

Dead stock... Needing something that hoppefully i dont have to modify if so, not much but dont have a lot of cash either...

shortbednewbie

01-14-2015 02:52 AM

Re: HELP! 454 motor swap

Do i need full length, and will the c20 headers work?

68post

01-14-2015 02:56 AM

Re: HELP! 454 motor swap

Yes, and yes. Those were the only listing for a 454.

shortbednewbie

01-14-2015 02:57 AM

Re: HELP! 454 motor swap

Ok cool! Any idea of modifications i would need to do?

andrewmp6

01-14-2015 03:16 AM

Re: HELP! 454 motor swap

Depends the brand some of the cheap brands fit great or are far off.If money is tight run factory manifolds.What trans are going to run with it and what torque converter?

shortbednewbie

01-14-2015 03:20 AM

Re: HELP! 454 motor swap

Trans is th400... Ill probably get the cheaper ones then

andrewmp6

01-14-2015 03:22 AM

Re: HELP! 454 motor swap

Shortie headers would be easier to install and probably fit better,Long tube will make more power but can be a pain to install.

68post

01-14-2015 01:24 PM

Re: HELP! 454 motor swap

Hedman are good usually. Don't buy any but long tube , it would just be a waste of money to do so !

kevinr1970

01-14-2015 04:22 PM

Re: HELP! 454 motor swap

Quote:

Originally Posted by 68post (Post 7003298)

Don't buy any but long tube , it would just be a waste of money to do so !

Why is that?

Squareforceone

01-14-2015 06:50 PM

Re: HELP! 454 motor swap

don't have specific advice other than that I'd order through summit. The headers I bought from them for my sbc worked great but the bigger reason to order through summit is that if you do end up with something that doesn't fit well summit has very good customer service

Ziegelsteinfaust

01-14-2015 08:23 PM

Re: HELP! 454 motor swap

Long tubes are better for all out power, but shorties have there places. Either work better then factory manifolds.

Big power needs long tubes or you'll be chocking the engine up. Stock or warmed up a big t shorties do the trick.

If I built a big block truck I would be running 3/4 or mod length to get the 6/8 drop I want.

68post

01-14-2015 09:28 PM

Re: HELP! 454 motor swap

Quote:

Originally Posted by kevinr1970 (Post 7003499)

Why is that?

Long tubes will give the most total torque, most bottom-end torque,and HP.
Shorties are only marginally better than the iron manifolds, and medium length are better - but less than the full length.

Cost is close or the same on all three.

You'll only need smaller tube headers if the engine will be stock.

If you'll be lowering the truck - try to use the med length.

Good Luck !!

$.02

radar1

01-14-2015 10:34 PM

Re: HELP! 454 motor swap

just did this swap last spring, check out the thread "Big Block Headers". The last day posted was 1-12-2015. I have included pictures of my swap. Good luck, I love the grunt of the Big Block.
Chris

kevinr1970

01-19-2015 01:19 PM

Re: HELP! 454 motor swap

Sorry, I missed the "but" in your post and read it as "Don't buy any long tube..."
:)

Quote:

Originally Posted by 68post (Post 7003898)

Long tubes will give the most total torque, most
bottom-end torque,and HP.
Shorties are only marginally better than the iron manifolds, and medium length are better - but less than the full length.

Cost is close or the same on all three.

You'll only need smaller tube headers if the engine will be stock.

If you'll be lowering the truck - try to use the med length.

Good Luck !!

$.02

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