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Re: Trickflow 270s
[Re: onebadfish]
#2929076
06/01/21 08:23 AM
06/01/21 08:23 AM
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Joined: Oct 2011
Posts: 559
Idaho
LaRoy Engines
mopar
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mopar
Joined: Oct 2011
Posts: 559
Idaho
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Guys have a question regarding hood fitment on a 1970 Challenger with a Ralley Hood. Just finished a 505 stroker build with 270 trickflow heads. Running a 6 pack intake. My engine builder says I will have fitment issues and says he can change heads to 240s. Anyone running a set of 270 heads with a 6 pack intake under a Ralley hood? There is a physical dimension difference according to AndyF in this article...... 240 vs 270
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Re: Trickflow 270s
[Re: LaRoy Engines]
#2929140
06/01/21 11:26 AM
06/01/21 11:26 AM
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Joined: Jan 2003
Posts: 14,496
So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,496
So. Burlington, Vt.
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The 270’s are MW port size and have the intake ports slightly raised........ about the same as an Indy head.
This moves the manifold up slightly.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
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Re: Trickflow 270s
[Re: fast68plymouth]
#2929301
06/01/21 08:30 PM
06/01/21 08:30 PM
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Joined: Jan 2003
Posts: 4,720
Moved to N.E. Tennessee
GomangoCuda
master
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master
Joined: Jan 2003
Posts: 4,720
Moved to N.E. Tennessee
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Just guessing here but I would think that the 270 heads and an Indy Modman intake would make somewhat more horse power but be less pleasant to drive than the 240 heads and Edelbrock 6pk intake.
Height difference? Probably not much.
Will it fit under your hood? No idea.
Sorry, not much help.
Last edited by GomangoCuda; 06/01/21 08:35 PM.
In theory, there is no difference between theory and practice. In practice, there is.
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Re: Trickflow 270s
[Re: LaRoy Engines]
#2929327
06/01/21 09:26 PM
06/01/21 09:26 PM
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Joined: Dec 2012
Posts: 20
Calgary, Alberta
onebadfish
OP
member
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OP
member
Joined: Dec 2012
Posts: 20
Calgary, Alberta
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Guys have a question regarding hood fitment on a 1970 Challenger with a Ralley Hood. Just finished a 505 stroker build with 270 trickflow heads. Running a 6 pack intake. My engine builder says I will have fitment issues and says he can change heads to 240s. Anyone running a set of 270 heads with a 6 pack intake under a Ralley hood? There is a physical dimension difference according to AndyF in this article...... 240 vs 270 It says in the article that the 270s are roughly 1/2 inch higher. I think I can live with that.
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Re: Trickflow 270s
[Re: onebadfish]
#2929361
06/01/21 11:59 PM
06/01/21 11:59 PM
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Joined: Jan 2003
Posts: 31,025
Oregon
AndyF
I Win
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I Win
Joined: Jan 2003
Posts: 31,025
Oregon
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Guys have a question regarding hood fitment on a 1970 Challenger with a Ralley Hood. Just finished a 505 stroker build with 270 trickflow heads. Running a 6 pack intake. My engine builder says I will have fitment issues and says he can change heads to 240s. Anyone running a set of 270 heads with a 6 pack intake under a Ralley hood? 240 heads would be a much better match for a six pack intake manifold. You're going to have issues mating a six pack intake to the TF270 heads.
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Re: Trickflow 270s
[Re: AndyF]
#2929438
06/02/21 11:17 AM
06/02/21 11:17 AM
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Joined: Dec 2012
Posts: 20
Calgary, Alberta
onebadfish
OP
member
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OP
member
Joined: Dec 2012
Posts: 20
Calgary, Alberta
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Guys have a question regarding hood fitment on a 1970 Challenger with a Ralley Hood. Just finished a 505 stroker build with 270 trickflow heads. Running a 6 pack intake. My engine builder says I will have fitment issues and says he can change heads to 240s. Anyone running a set of 270 heads with a 6 pack intake under a Ralley hood? 240 heads would be a much better match for a six pack intake manifold. You're going to have issues mating a six pack intake to the TF270 heads. Yes agreed. The 240s would match up better. I gave my builder two intakes. One to play with to see how he could match up the 270s. Initial plan was for 240s. He has both heads in stock. He said he’s satisfied with the porting/matching with the 270s so we’ll give it a go and see what it makes on the Dyno. 10.5 to 1. 262/267 @50. 637/634 lift. 110 LSA installed at 107 or there about...can’t remember. The motor is built however the car is still on the rotisserie lol! Just about done metal work.
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Re: Trickflow 270s
[Re: onebadfish]
#2929459
06/02/21 12:11 PM
06/02/21 12:11 PM
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Joined: Mar 2007
Posts: 3,277
West Coast, USA
jbc426
master
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master
Joined: Mar 2007
Posts: 3,277
West Coast, USA
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Guys have a question regarding hood fitment on a 1970 Challenger with a Ralley Hood. Just finished a 505 stroker build with 270 trickflow heads. Running a 6 pack intake. My engine builder says I will have fitment issues and says he can change heads to 240s. Anyone running a set of 270 heads with a 6 pack intake under a Ralley hood? 240 heads would be a much better match for a six pack intake manifold. You're going to have issues mating a six pack intake to the TF270 heads. Yes agreed. The 240s would match up better. I gave my builder two intakes. One to play with to see how he could match up the 270s. Initial plan was for 240s. He has both heads in stock. He said he’s satisfied with the porting/matching with the 270s so we’ll give it a go and see what it makes on the Dyno. 10.5 to 1. 262/267 @50. 637/634 lift. 110 LSA installed at 107 or there about...can’t remember. The motor is built however the car is still on the rotisserie lol! Just about done metal work. I'm curious to see what the six pack intake looks like after being modified to fit the Max Wedge ports. It was my understanding that this would involve significant welding to build up the top of the ports at the heads. Can you post a few pictures?
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's
1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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Re: Trickflow 270s
[Re: jbc426]
#2929555
06/02/21 05:28 PM
06/02/21 05:28 PM
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Joined: Dec 2012
Posts: 20
Calgary, Alberta
onebadfish
OP
member
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OP
member
Joined: Dec 2012
Posts: 20
Calgary, Alberta
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Guys have a question regarding hood fitment on a 1970 Challenger with a Ralley Hood. Just finished a 505 stroker build with 270 trickflow heads. Running a 6 pack intake. My engine builder says I will have fitment issues and says he can change heads to 240s. Anyone running a set of 270 heads with a 6 pack intake under a Ralley hood? 240 heads would be a much better match for a six pack intake manifold. You're going to have issues mating a six pack intake to the TF270 heads. Yes agreed. The 240s would match up better. I gave my builder two intakes. One to play with to see how he could match up the 270s. Initial plan was for 240s. He has both heads in stock. He said he’s satisfied with the porting/matching with the 270s so we’ll give it a go and see what it makes on the Dyno. 10.5 to 1. 262/267 @50. 637/634 lift. 110 LSA installed at 107 or there about...can’t remember. The motor is built however the car is still on the rotisserie lol! Just about done metal work. I'm curious to see what the six pack intake looks like after being modified to fit the Max Wedge ports. It was my understanding that this would involve significant welding to build up the top of the ports at the heads. Can you post a few pictures?
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